Mechanical Design Control System Design
|
|
- Belinda Pope
- 6 years ago
- Views:
Transcription
1 Mechanical Design Control System Design Rafael Quintanilla Escalante March 22, 2005
2 Lecture Contents Design Process * Miscellaneous Components ** Gears and Belts Flexible Couplings Bearings Fixing Components to Shafts Stress and Strain Analysis Design Studies TIM (Infrared Mexican Telescope) * Based on the notes of Douglas Wright on Mechanical Analysis of Machine Elements, Department of Mechanical and Materials Engineering, University of Western Australia. ** Based on last year s lecture on Mechanical Design given by Ben Potsaid to the CSD class, ECSE, RPI.
3 What is Design? Goal Plan Thinking process Invention Interpretation of Design: Design is the application of creativity to plan the optimum solution of a given problem and the communication of that plan to others.
4 The Rudimentary Design Process STATE THE PROBLEM broad, complete GENERATE IDEAS methods AVAILABLE KNOWLEDGE BANK OF SOLUTION CANDIDATES uncritical quantity not quality RENDER PRACTICABLE SPECIFY CONTRAINTS & CRITERIA EVALUATE CANDIDATES OPTIMUM SOLUTION communicate
5 Problem Statement Understand the problem communicate Designer s responsibility to initiate communication and clear up any misunderstanding. Avoid artificial constraints Real boundary Fictitious restrictions Solution Space Your limitation knowledge Example: Team 4 - track a target in various lighting conditions. Broaden the problem Example: Financial Problems!! How to reduce car s fuel consumption? Improve driving habits Tune engine Switch off engine at red lights more broadly How to reduce car s running costs? Fuel consumption Ignore maintenance
6 Problem Statement (Cont.) more broadly How to travel between home and work at minimum cost? more broadly How to get money? walk bike bus Go to work Lottery car Get another job Complete the problem Identify everyone and everything likely to be affected by any solution. Examples: Inaccurate launching system causes iterative refinement not been able to compensate errors. Team 1 spills water on the car of Team3 You must ask the right questions BEFORE NEXT STAGE OF DESIGN, PROBLEM STATEMENT MUST BE AS BROAD AND COMPLETE AS POSSIBLE
7 Generation of Ideas Avoid ALL criticism while creating Inventiveness depends upon: Inherited qualities: Leonardo DaVinci Attitude: Be positive. Knowledge: Understanding of similar problems and area of study. Effort: Edison, inventor of the light bulb, said: Invention is 1% inspiration and 99% perspiration Ideation is carried out before considering constraints and criteria (crazy candidates trigger or are transformed into practical solutions) Generate as many ideas as possible; quality doesn t matter at this stage. However, recognize when stop inventing. Rate of idea generation Cumulative number of ideas generated QUIT TIME? time
8 Specify Constraints and Criteria Identify ALL the constraints and criteria Constraints: Bounds that every candidate solution must satisfy to be valid. Examples: Pour water from a bottle into a cup without spilling. The motor current should be lower than 300mA. Criteria: Measurements used to judge different candidate solutions. The degree by which candidate i satisfies the criterion j may be expressed by the utility, uij, often a real number between 0 and 100%. Examples: Pour water from a bottle into a cup minimizing spilling. The motor circuit should be cooled down. Solution space can be increased by converting constraints into equivalent criteria A common criterion which is often neglected is the need for simplicity
9 Render Practical candidate solution from bank Solve secondary problems, modify Candidate CAN satisfies ALL constraints? NO Candidate CANNOT satisfies ALL constraints? NO YES YES practical solution to evaluation activity impractical solution to trash A problem is trivial if it has been previously solved satisfactorily. NEW SOLUTION NEW SOLUTION NEW SOLUTION PROBLEM SECONDARY PROBLEM TERTIARY PROBLEM TRIVIAL SOLUTION TRIVIAL SOLUTION TRIVIAL SOLUTION DONE! DONE! DONE!
10 Render Practical (Cont.) Need to consider the manufacture and operation of the candidate solution in detail. Manufacture: Knowledge or Direct experimentation. Operation: Direct experimentation if possible (certain components or subsystems), or Mathematical model Inter-dependence of kinematics and forces occurs in all devices. Beware the dangers of a kinematic analysis without looking also at the forces involve. Candidates must be rendered practical before evaluation
11 Evaluation Compare practical solution candidates based on the problem criteria 1) Relative importance of criteria Weight w j : relative importance of the jth criterion Example: w mass is 25% for the vacuum cleaner and 75% for the military aircraft 2) Satisfaction of the criteria - utility Utility u ij : degree to which the ith candidate satisfies the jth criterion. ( 0 u ij 1 or 100%) 3) Overall utility U i : degree to which the ith candidate satisfies the whole problem. U i = n j= 1 w u j ij ; n = number of criteria Optimum candidate is the one with highest overall utility
12 Fixing Components to Shafts Setscrews: Low torque transmission High stress generation Low cost UNRELIABLE Examples:
13 Fixing Components to Shafts Pins: Low torque transmission High stress generation Low cost Examples: Straight round pin Tapered round pin Circular or roll pin
14 Fixing Components to Shafts Keys: Medium torque transmission High stress generation Medium cost Examples: square key flat key round key
15 Fixing Components to Shafts Spline: High torque transmission Low stress generation High cost Examples: spline
16 Fixing Components to Shafts Camp : High torque transmission Low stress generation Medium cost Examples:
17 Fixing Components to Shafts
18 Mechanical Design Fixing Components to Shafts Method Torque Stress Cost Setscrew Low High Low unreliable Clamp High Low Med Pin Low High Low Key Med High Med Spline High Low High
19 Gears and Belts Instantaneously, gears and pulleys act like levers
20 Gears and Belts (Cont.) At steady state velocity or ignoring inertia r1 Fr 1 1 τ 1 N = = = r F r τ τ FBD (F and M balance) = Nτ 1 2 Thermodynamic (conservation of energy) Power = τθ τ 1θ 1 = τ 2θ 2 θ 2 τ1 N = = θ τ Conservative System 1 (Power in = Power out) 2 Kinematic (velocity analysis) r 1 θ 2 N = = r 2 θ1 θ = N θ 2 1
21 Gearheads - Spur Inexpensive Efficient Low torque Some backlash Motor and Gearhead often combined
22 Identical stages can be stacked together Gearheads - Planetary Large reduction in a small and lightweight assembly Large torque capacity Considerable backlash
23 Gearheads - Harmonic Flexspline has 2 fewer teeth than circular spline One tooth advances every rotation Huge reduction in small and lightweight assembly Almost no backlash Aerospace and robotics applications
24 Gearheads Comparison Type Torque Efficienc y Backlas h Cost Spur Low High Low Low Planetar y Harmoni c High Low High Med Med Med Low High
25 Bearings Outer race Inner race Bearings are usually press fit to the shaft or housing. Correct bearing hole diameter is critical. Heat expansion can be used to assist assembly. Bearings allow for slight misalignment
26 Flexible Couplings Parallel offset misalignment Angular misalignment Coupling is used to transmit torque between two shafts. Coupling is rigid in torsion and flexible in bending. Without flexible coupling, there would be excessive loads on the shafts and bearings. Without flexible coupling, bearings would fail prematurely and performance would suffer.
27 Stress and Strain Dynamic forces are exerted on the mechanical components. F = m x τ = J θ Dynamic forces cause deflections (strain) and internal forces (stresses) in the structural components. A Strain ( ε ) : ε = L L o Stress ( σ ) : σ = F A
28 Stress and Strain Yield Stress (elongation) In the linear region, material acts like a spring ( F = kx ). Stresses in the components should never exceed the Yield Stress to prevent permanent deformation. Why we do not design to the yield strength?
29 Design Study - TIM
30 Conclusions Mechanical Design and Control System Design cannot be done separately when high performance is required. Apply the Rudimentary Design Process. Don t forget about first principles and the basics.
Stress Analysis Lecture 3 ME 276 Spring Dr./ Ahmed Mohamed Nagib Elmekawy
Stress Analysis Lecture 3 ME 276 Spring 2017-2018 Dr./ Ahmed Mohamed Nagib Elmekawy Axial Stress 2 Beam under the action of two tensile forces 3 Beam under the action of two tensile forces 4 Shear Stress
More informationProduct description. Compact Modules. Characteristic features. Further highlights
4 Compact Modules Product description Characteristic features Five fine-tuned sizes based on a compact precision aluminum profile with two integrated pre-tensioned ball rail systems Identical external
More information[7] Torsion. [7.1] Torsion. [7.2] Statically Indeterminate Torsion. [7] Torsion Page 1 of 21
[7] Torsion Page 1 of 21 [7] Torsion [7.1] Torsion [7.2] Statically Indeterminate Torsion [7] Torsion Page 2 of 21 [7.1] Torsion SHEAR STRAIN DUE TO TORSION 1) A shaft with a circular cross section is
More informationMAAE 2202 A. Come to the PASS workshop with your mock exam complete. During the workshop you can work with other students to review your work.
It is most beneficial to you to write this mock final exam UNDER EXAM CONDITIONS. This means: Complete the exam in 3 hours. Work on your own. Keep your textbook closed. Attempt every question. After the
More informationPositioning Controller for Mechanical Systems with a Mini Harmonic Drive Servo Actuator
Positioning Controller for Mechanical Systems with a Mini Harmonic Drive Servo Actuator Tegoeh Tjahjowidodo, Farid Al-Bender, Hendrik Van Brussel, and Wim Symens Abstract Harmonic drives (HD) are high-ratio,
More information+ + = integer (13-15) πm. z 2 z 2 θ 1. Fig Constrained Gear System Fig Constrained Gear System Containing a Rack
Figure 13-8 shows a constrained gear system in which a rack is meshed. The heavy line in Figure 13-8 corresponds to the belt in Figure 13-7. If the length of the belt cannot be evenly divided by circular
More informationCIVL222 STRENGTH OF MATERIALS. Chapter 6. Torsion
CIVL222 STRENGTH OF MATERIALS Chapter 6 Torsion Definition Torque is a moment that tends to twist a member about its longitudinal axis. Slender members subjected to a twisting load are said to be in torsion.
More information4. SHAFTS. A shaft is an element used to transmit power and torque, and it can support
4. SHAFTS A shaft is an element used to transmit power and torque, and it can support reverse bending (fatigue). Most shafts have circular cross sections, either solid or tubular. The difference between
More informationRobotics I. Test November 29, 2013
Exercise 1 [6 points] Robotics I Test November 9, 013 A DC motor is used to actuate a single robot link that rotates in the horizontal plane around a joint axis passing through its base. The motor is connected
More informationPrecision Ball Screw/Spline
58-2E Models BNS-A, BNS, NS-A and NS Seal Outer ring Shim plate Seal Spline nut Seal Collar Shim plate Seal End cap Ball Outer ring Ball screw nut Outer ring Ball Retainer Retainer Outer ring Point of
More informationCHAPTER 17 FLEXIBLE MECHANICAL ELEMENTS LECTURE NOTES DR. HAFTIRMAN
CHAPTER 17 LEXIBLE MECHANICAL ELEMENTS LECTURE NOTES DR. HATIRMAN lexible Mechanical Elements Belts Roller chains Wire rope lexible shafts lexible Mechanical Elements Belts, ropes, chains, and other similar
More informationRotating Bending with Constant Torsion and Rotated Bending with Constant or Variable Torsion
Rotating Bending with Constant Torsion and Rotated Bending with Constant or Variable Torsion B. I. Stoychev 1, S. H. Stefanov 2 1 Department of Engineering Mechanics, Technical University of Gabrovo, 4
More informationNonlinear Modelling and Identification of Torsional Behaviour in Harmonic Drives
Nonlinear Modelling and Identification of Torsional Behaviour in Harmonic Drives T. Tjahjowidodo, F. Al-Bender, H. Van Brussel K.U.Leuven, Department Mechanical Engineering Celestijnenlaan 3 B, B-31, Heverlee,
More informationMechanical Design. Design of Shaft
Mechanical Design Design of Shaft Outline Practical information Shaft design Definition of shaft? It is a rotating member, in general, has a circular cross-section and is used to transmit power. The shaft
More informationIntroduction. Machine Element Design Walid Khraisat
Introduction Machine Element Design 0906437 Walid Khraisat What Is Design? Engineering design is a systematic process by which solutions to the needs of humankind are obtained Examples Lightweight,compact
More informationD : SOLID MECHANICS. Q. 1 Q. 9 carry one mark each.
GTE 2016 Q. 1 Q. 9 carry one mark each. D : SOLID MECHNICS Q.1 single degree of freedom vibrating system has mass of 5 kg, stiffness of 500 N/m and damping coefficient of 100 N-s/m. To make the system
More informationLesson of Mechanics and Machines done in the 5th A-M, by the teacher Pietro Calicchio. THE GEARS CYLINDRICAL STRAIGHT TEETH GEARS
MESA PROJECT Lesson of Mechanics and Machines done in the 5th A-M, 2012-2013 by the teacher Pietro Calicchio. THE GEARS To transmit high power are usually used gear wheels. In this case, the transmission
More informationThe problem of transmitting a torque or rotary motion from one plane to another is frequently encountered in machine design.
CHAPER ORSION ORSION orsion refers to the twisting of a structural member when it is loaded by moments/torques that produce rotation about the longitudinal axis of the member he problem of transmitting
More informationTorsion Stresses in Tubes and Rods
Torsion Stresses in Tubes and Rods This initial analysis is valid only for a restricted range of problem for which the assumptions are: Rod is initially straight. Rod twists without bending. Material is
More informationMechanical Design in Optical Engineering
Torsion Torsion: Torsion refers to the twisting of a structural member that is loaded by couples (torque) that produce rotation about the member s longitudinal axis. In other words, the member is loaded
More informationSimple Car Dynamics. Outline. Claude Lacoursière HPC2N/VRlab, Umeå Universitet, Sweden, May 18, 2005
Simple Car Dynamics Claude Lacoursière HPC2N/VRlab, Umeå Universitet, Sweden, and CMLabs Simulations, Montréal, Canada May 18, 2005 Typeset by FoilTEX May 16th 2005 Outline basics of vehicle dynamics different
More informationPublic Service Commission, West Bengal
Public Service Commission, West Bengal Syllabus for the Written Test for recruitment to the posts of ASSISTANT ENGINEER (Agri - Mechanical) in West Bengal Service of Agricultural Engineers Mechanical Engineering
More informationDSC HW 3: Assigned 6/25/11, Due 7/2/12 Page 1
DSC HW 3: Assigned 6/25/11, Due 7/2/12 Page 1 Problem 1 (Motor-Fan): A motor and fan are to be connected as shown in Figure 1. The torque-speed characteristics of the motor and fan are plotted on the same
More informationMechanical Engineering Ph.D. Preliminary Qualifying Examination Solid Mechanics February 25, 2002
student personal identification (ID) number on each sheet. Do not write your name on any sheet. #1. A homogeneous, isotropic, linear elastic bar has rectangular cross sectional area A, modulus of elasticity
More informationChapter 5 Torsion STRUCTURAL MECHANICS: CE203. Notes are based on Mechanics of Materials: by R. C. Hibbeler, 7th Edition, Pearson
STRUCTURAL MECHANICS: CE203 Chapter 5 Torsion Notes are based on Mechanics of Materials: by R. C. Hibbeler, 7th Edition, Pearson Dr B. Achour & Dr Eng. K. El-kashif Civil Engineering Department, University
More informationAnalysis and Calculation of Double Circular Arc Gear Meshing Impact Model
Send Orders for Reprints to reprints@benthamscienceae 160 The Open Mechanical Engineering Journal, 015, 9, 160-167 Open Access Analysis and Calculation of Double Circular Arc Gear Meshing Impact Model
More informationSOLUTION (17.3) Known: A simply supported steel shaft is connected to an electric motor with a flexible coupling.
SOLUTION (17.3) Known: A simply supported steel shaft is connected to an electric motor with a flexible coupling. Find: Determine the value of the critical speed of rotation for the shaft. Schematic and
More informationInitial Stress Calculations
Initial Stress Calculations The following are the initial hand stress calculations conducted during the early stages of the design process. Therefore, some of the material properties as well as dimensions
More informationIdentification system for short product names. Changes/amendments at a glance. 2 Bosch Rexroth AG OBB omega modules R ( )
Omega Modules OBB 2 OBB omega modules R9990079 (206-05) Identification system for short product names Short product name Example: O B B - 085 - N N - System = Omega module Guideway = Ball Rail System Drive
More informationExamination of finite element analysis and experimental results of quasi-statically loaded acetal copolymer gears
Examination of finite element analysis and experimental results of quasi-statically loaded acetal copolymer gears Paul Wyluda Ticona Summit, NJ 07901 Dan Wolf MSC Palo Alto, CA 94306 Abstract An elastic-plastic
More informationROLLER BEARING FAILURES IN REDUCTION GEAR CAUSED BY INADEQUATE DAMPING BY ELASTIC COUPLINGS FOR LOW ORDER EXCITATIONS
ROLLER BEARIG FAILURES I REDUCTIO GEAR CAUSED BY IADEQUATE DAMPIG BY ELASTIC COUPLIGS FOR LOW ORDER EXCITATIOS ~by Herbert Roeser, Trans Marine Propulsion Systems, Inc. Seattle Flexible couplings provide
More informationA Study on the Tube of Integral Propeller Shaft for the Rear-wheel Drive Automobile Using Carbon Composite Fiber
A Study on the Tube of Integral Propeller Shaft for the Rear-wheel Drive Automobile Using Carbon Composite Fiber Kibong Han Mechatronics Department, Jungwon University, 85 Munmu-ro, Goesan-gun, South Korea.
More informationCircular motion minutes. 62 marks. theonlinephysicstutor.com. facebook.com/theonlinephysicstutor Page 1 of 22. Name: Class: Date: Time: Marks:
Circular motion 2 Name: Class: Date: Time: 67 minutes Marks: 62 marks Comments: Page 1 of 22 1 A lead ball of mass 0.25 kg is swung round on the end of a string so that the ball moves in a horizontal circle
More informationEqual Pitch and Unequal Pitch:
Equal Pitch and Unequal Pitch: Equal-Pitch Multiple-Stack Stepper: For each rotor stack, there is a toothed stator segment around it, whose pitch angle is identical to that of the rotor (θs = θr). A stator
More informationENT345 Mechanical Components Design
1) LOAD AND STRESS ANALYSIS i. Principle stress ii. The maximum shear stress iii. The endurance strength of shaft. 1) Problem 3-71 A countershaft carrying two-v belt pulleys is shown in the figure. Pulley
More informationCHAPTER 8 SCREWS, FASTENERS, NONPERMANENT JOINTS
CHAPTER 8 SCREWS, FASTENERS, NONPERMANENT JOINTS This chapter deals with the design and analysis of nonpermanent fasteners such as bolts, power screws, cap screws, setscrews, eys and pins. 8- Standards
More informationMECHANICS OF MATERIALS
2009 The McGraw-Hill Companies, Inc. All rights reserved. Fifth SI Edition CHAPTER 3 MECHANICS OF MATERIALS Ferdinand P. Beer E. Russell Johnston, Jr. John T. DeWolf David F. Mazurek Torsion Lecture Notes:
More informationStructure Design and Modal Analysis for a New Type of Cycloidal Drives
Structure Design and Modal nalysis for a New Type of Cycloidal Drives Yiqiang Jiang, Li Hou, Yunxia You, Jingyu Zhang School of Manufacturing Science and Engineering Sichuan University Chengdu, Sichuan,China
More informationTorsion of shafts with circular symmetry
orsion of shafts with circular symmetry Introduction Consider a uniform bar which is subject to a torque, eg through the action of two forces F separated by distance d, hence Fd orsion is the resultant
More informationShafts. Fig.(4.1) Dr. Salah Gasim Ahmed YIC 1
Shafts. Power transmission shafting Continuous mechanical power is usually transmitted along and etween rotating shafts. The transfer etween shafts is accomplished y gears, elts, chains or other similar
More informationEDEXCEL NATIONAL CERTIFICATE/DIPLOMA SCIENCE FOR TECHNICIANS OUTCOME 1 - STATIC AND DYNAMIC FORCES TUTORIAL 3 STRESS AND STRAIN
EDEXCEL NATIONAL CERTIFICATE/DIPLOMA SCIENCE FOR TECHNICIANS OUTCOME 1 - STATIC AND DYNAMIC FORCES TUTORIAL 3 STRESS AND STRAIN 1 Static and dynamic forces Forces: definitions of: matter, mass, weight,
More informationPRECISE REDUCER OF INCREASED DURABILITY
Conclusion Abstract of development results and maintenance of reducers on the basis of WGIRB in structure of drives of various assignment gives the opportunity to state the following main conclusions and
More informationCardan s Coupling Shaft as a Dynamic Evolutionary System
American Journal of Modern Physics and Application 2017; 4(2): 6-11 http://www.openscienceonline.com/journal/ajmpa Cardan s Coupling Shaft as a Dynamic Evolutionary System Petr Hrubý 1, Zdeněk Hlaváč 2,
More informationTuesday, February 11, Chapter 3. Load and Stress Analysis. Dr. Mohammad Suliman Abuhaiba, PE
1 Chapter 3 Load and Stress Analysis 2 Chapter Outline Equilibrium & Free-Body Diagrams Shear Force and Bending Moments in Beams Singularity Functions Stress Cartesian Stress Components Mohr s Circle for
More informationVane Type Rotary Actuators Series Variations
Vane Type Rotary Actuators Series Variations Vane Type Exterior CRB Series 0,, 0,, CRBU Series 0,, 0,, CRB Series, 6, 80, Has a compact body with exterior dimensions that do not change regardless of the
More informationMEMS Project 2 Assignment. Design of a Shaft to Transmit Torque Between Two Pulleys
MEMS 029 Project 2 Assignment Design of a Shaft to Transmit Torque Between Two Pulleys Date: February 5, 206 Instructor: Dr. Stephen Ludwick Product Definition Shafts are incredibly important in order
More informationINFLUENCE OF THE FRICTION ON THE CYCLOIDAL SPEED REDUCER EFFICIENCY
Journal of the Balkan Tribological Association Vol. 8, No, 7 7 (0) INFLUENCE OF THE FRICTION ON THE CYCLOIDAL SPEED REDUCER EFFICIENCY Friction in cycloidal speed reducers M. BLAGOJEVIc a *, M. KOcIc b,
More informationLab Exercise #3: Torsion
Lab Exercise #3: Pre-lab assignment: Yes No Goals: 1. To evaluate the equations of angular displacement, shear stress, and shear strain for a shaft undergoing torsional stress. Principles: testing of round
More informationRobotics I. Figure 1: Initial placement of a rigid thin rod of length L in an absolute reference frame.
Robotics I September, 7 Exercise Consider the rigid body in Fig., a thin rod of length L. The rod will be rotated by an angle α around the z axis, then by an angle β around the resulting x axis, and finally
More informationWhen a rigid body is in equilibrium, both the resultant force and the resultant couple must be zero.
When a rigid body is in equilibrium, both the resultant force and the resultant couple must be zero. 0 0 0 0 k M j M i M M k R j R i R F R z y x z y x Forces and moments acting on a rigid body could be
More informationFME461 Engineering Design II
FME461 Engineering Design II Dr.Hussein Jama Hussein.jama@uobi.ac.ke Office 414 Lecture: Mon 8am -10am Tutorial Tue 3pm - 5pm 10/1/2013 1 Semester outline Date Week Topics Reference Reading 9 th Sept 1
More informationIntroduction to Engineering Materials ENGR2000. Dr. Coates
Introduction to Engineering Materials ENGR2 Chapter 6: Mechanical Properties of Metals Dr. Coates 6.2 Concepts of Stress and Strain tension compression shear torsion Tension Tests The specimen is deformed
More informationWork, Power, & Machines
Work, Power, & Machines 1 What is work? To many people, the word work means something they do to earn money. The word work also means exerting a force with your muscles. 1 What is work? Someone might say
More informationXR Series. Introduction. Design Features. Availability. Applications
Kaydon Bearings Slewing Ring Bearings Catalog 390 Introduction The consists of Kaydon cross roller bearings. They provide a high degree of stiffness and low rotational torque within a minimal envelope.
More informationENGR 1100 Introduction to Mechanical Engineering
ENGR 1100 Introduction to Mechanical Engineering Mech. Engineering Objectives Newton s Laws of Motion Free Body Diagram Transmissibility Forces and Moments as vectors Parallel Vectors (addition/subtraction)
More informationTheory & Practice of Rotor Dynamics Prof. Rajiv Tiwari Department of Mechanical Engineering Indian Institute of Technology Guwahati
Theory & Practice of Rotor Dynamics Prof. Rajiv Tiwari Department of Mechanical Engineering Indian Institute of Technology Guwahati Module - 8 Balancing Lecture - 1 Introduce To Rigid Rotor Balancing Till
More informationCAE DEVELOPMENT OF PRECESSIONAL DRIVES USING AUTODESK INVENTOR PLATFORM
CAE DEVELOPMENT OF PRECESSIONAL DRIVES USING AUTODESK INVENTOR PLATFORM Dr.Sc., PhD, acad. Ion BOSTAN, Technical University of Moldova, bostan@adm.utm.md, Dr.Sc., PhD, Valeriu DULGHERU, Technical University
More informationModal Analysis: What it is and is not Gerrit Visser
Modal Analysis: What it is and is not Gerrit Visser What is a Modal Analysis? What answers do we get out of it? How is it useful? What does it not tell us? In this article, we ll discuss where a modal
More informationEMA 3702 Mechanics & Materials Science (Mechanics of Materials) Chapter 3 Torsion
EMA 3702 Mechanics & Materials Science (Mechanics of Materials) Chapter 3 Torsion Introduction Stress and strain in components subjected to torque T Circular Cross-section shape Material Shaft design Non-circular
More informationWhen a rigid body is in equilibrium, both the resultant force and the resultant couple must be zero.
When a rigid body is in equilibrium, both the resultant force and the resultant couple must be zero. 0 0 0 0 k M j M i M M k R j R i R F R z y x z y x Forces and moments acting on a rigid body could be
More informationShafts Introduction. Shafts 509
Shafts 509 C H A P T E R 14 Shafts 1. Introduction.. Material Used for Shafts.. Manufacturing of Shafts. 4. Types of Shafts. 5. Standard Sizes of Transmission Shafts. 6. Stresses in Shafts. 7. Maximum
More informationImprovement in the Design & Manufacturing of Twin Worm Self Locking Technique and applications
Improvement in the Design & Manufacturing of Twin Worm Self Locking Technique and applications Prof. P.B. Kadam 1, Prof. M.R. Todkar 2 1 Assistant Professor, Mechanical Engineering Department, T.K.I.E.T.Warananagar,
More informationDynamics of Machinery
Dynamics of Machinery Two Mark Questions & Answers Varun B Page 1 Force Analysis 1. Define inertia force. Inertia force is an imaginary force, which when acts upon a rigid body, brings it to an equilibrium
More informationReplacement of Grid Coupling with Bush Pin Coupling in Blower
Replacement of Grid Coupling with Bush Pin Coupling in Blower Ramees Rahman A 1, Dr S Sankar 2 Dr K S Senthil Kumar 3 P.G. Student, Department of Mechanical Engineering, NCERC, Thrissure, Kerala, India
More informationIntroduction to Control (034040) lecture no. 2
Introduction to Control (034040) lecture no. 2 Leonid Mirkin Faculty of Mechanical Engineering Technion IIT Setup: Abstract control problem to begin with y P(s) u where P is a plant u is a control signal
More informationLexium integrated drives
Presentation GBX planetary gearbox Presentation In many cases the axis controller requires the use of a planetary gearbox for adjustment of speed of rotation and torque; the accuracy required by the application
More informationSECOND ENGINEER REG. III/2 APPLIED MECHANICS
SECOND ENGINEER REG. III/2 APPLIED MECHANICS LIST OF TOPICS Static s Friction Kinematics Dynamics Machines Strength of Materials Hydrostatics Hydrodynamics A STATICS 1 Solves problems involving forces
More informationThermal Analysis. inspiration
white paper Thermal Analysis inspiration summary In this white paper we define and then outline the concept of thermal analysis as it relates to product design. We discuss the principles of conduction,
More informationA 954 C HD. Technical Description Hydraulic Excavator. Machine for Industrial Applications
Technical Description Hydraulic Excavator A 95 C HD litronic` Machine for Industrial Applications Operating Weight 165,800 170,0 lb Engine Output 36 hp (0 kw) Technical Data Engine Rating per ISO 99 0
More informationWORCESTER POLYTECHNIC INSTITUTE
WORCESTER POLYTECHNIC INSTITUTE MECHANICAL ENGINEERING DEPARTMENT STRESS ANALYSIS ES-2502, C 2012 Lecture 17: 10 February 2012 General information Instructor: Cosme Furlong HL-151 (508) 831-5126 cfurlong@wpi.edu
More informationMembers Subjected to Torsional Loads
Members Subjected to Torsional Loads Torsion of circular shafts Definition of Torsion: Consider a shaft rigidly clamped at one end and twisted at the other end by a torque T = F.d applied in a plane perpendicular
More informationSprings Lecture 3. Extension Springs
Springs Lecture 3 Extension Springs Carry tensile loading Extension springs Max. Normal stress at A due to Bending and Axial loading σ A K A 6D 4 F K A + 3 πd πd 4C 4C C ( C ) r d C Max. torsional stress
More informationFlexible Mechanical Elements
lexible Mechanical Elements INTRODUCTION Belts, ropes, chains, and other similar elastic or flexible machine elements are used in conveying systems and in the transmission of power over comparatively long
More information12/25/ :27 PM. Chapter 14. Spur and Helical Gears. Mohammad Suliman Abuhaiba, Ph.D., PE
Chapter 14 Spur and Helical Gears 1 2 The Lewis Bending Equation Equation to estimate bending stress in gear teeth in which tooth form entered into the formulation: 3 The Lewis Bending Equation Assume
More informationDrive Shaft Failure of Z-Drive Propulsion System. Suzanne Higgins
Drive Shaft Failure of Z-Drive Propulsion System Suzanne Higgins Background Bunkering vessel MV Southern Valour Commissioned in 2008 in Singapore Operating in Cape Town harbour since August 2008 Z-Drive
More informationMechanics. Centrifugal force Dynamics. What you need: Complete Equipment Set, Manual on CD-ROM included. What you can learn about
Dynamics Mechanics What you can learn about Centripetal force Rotary motion Angular velocity Apparent force Principle: A body with variable mass moves on a circular path with adjustable radius and variable
More informationThe basic dynamic load rating C is a statistical number and it is based on 90% of the bearings surviving 50 km of travel carrying the full load.
Technical data Load Rating & Life Under normal conditions, the linear rail system can be damaged by metal fatigue as the result of repeated stress. The repeated stress causes flaking of the raceways and
More informationBig Idea 4: Interactions between systems can result in changes in those systems. Essential Knowledge 4.D.1: Torque, angular velocity, angular
Unit 7: Rotational Motion (angular kinematics, dynamics, momentum & energy) Name: Big Idea 3: The interactions of an object with other objects can be described by forces. Essential Knowledge 3.F.1: Only
More informationRobotics I. Classroom Test November 21, 2014
Robotics I Classroom Test November 21, 2014 Exercise 1 [6 points] In the Unimation Puma 560 robot, the DC motor that drives joint 2 is mounted in the body of link 2 upper arm and is connected to the joint
More informationAERO 214. Lab II. Measurement of elastic moduli using bending of beams and torsion of bars
AERO 214 Lab II. Measurement of elastic moduli using bending of beams and torsion of bars BENDING EXPERIMENT Introduction Flexural properties of materials are of interest to engineers in many different
More informationSelection of Servomotors and Reducer Units for a 2 DoF PKM
Selection of Servomotors and Reducer Units for a 2 DoF PKM Hermes GIBERTI, Simone CINQUEMANI Mechanical Engineering Department, Politecnico di Milano, Campus Bovisa Sud, via La Masa 34, 20156, Milano,
More information(48) CHAPTER 3: TORSION
(48) CHAPTER 3: TORSION Introduction: In this chapter structural members and machine parts that are in torsion will be considered. More specifically, you will analyze the stresses and strains in members
More informationModule 5: Theories of Failure
Module 5: Theories of Failure Objectives: The objectives/outcomes of this lecture on Theories of Failure is to enable students for 1. Recognize loading on Structural Members/Machine elements and allowable
More informationANALYSIS OF GATE 2018*(Memory Based) Mechanical Engineering
ANALYSIS OF GATE 2018*(Memory Based) Mechanical Engineering 6% 15% 13% 3% 8% Engineering Mathematics Engineering Mechanics Mechanics of Materials Theory Of Machines Machine Design Fluid Mechanics 19% 8%
More informationUniversity of Pretoria Department of Mechanical & Aeronautical Engineering MOW 227, 2 nd Semester 2014
Universit of Pretoria Department of Mechanical & Aeronautical Engineering MOW 7, nd Semester 04 Semester Test Date: August, 04 Total: 00 Internal eaminer: Duration: hours Mr. Riaan Meeser Instructions:
More informationRotational Kinematics
Rotational Kinematics Rotational Coordinates Ridged objects require six numbers to describe their position and orientation: 3 coordinates 3 axes of rotation Rotational Coordinates Use an angle θ to describe
More informationTopic 6 Power Transmission Elements II
Topic 6 Power Transmission Elements II Topics: Screws! Gears! 000 Alexander Slocum 6-1 Screws! The screw thread is one of the most important inventions ever made HUGE forces can be created by screw threads,
More informationFinal Exam April 30, 2013
Final Exam Instructions: You have 120 minutes to complete this exam. This is a closed-book, closed-notes exam. You are allowed to use a calculator during the exam. Usage of mobile phones and other electronic
More informationPhysics Kinematics, Projectile Motion, Free-Body Diagrams, and Rotational Motion
Physics Kinematics, Projectile Motion, Free-Body Diagrams, and Rotational Motion Kinematics and Projectile Motion Problem Solving Steps 1. Read and Re-Read the whole problem carefully before trying to
More informationMechanics of Materials II. Chapter III. A review of the fundamental formulation of stress, strain, and deflection
Mechanics of Materials II Chapter III A review of the fundamental formulation of stress, strain, and deflection Outline Introduction Assumtions and limitations Axial loading Torsion of circular shafts
More informationMechatronics. MANE 4490 Fall 2002 Assignment # 1
Mechatronics MANE 4490 Fall 2002 Assignment # 1 1. For each of the physical models shown in Figure 1, derive the mathematical model (equation of motion). All displacements are measured from the static
More informationZF Maschinenantriebe GmbH Industrial Drives. Planetary gearboxes Economy Series for Servomotors
ZF Maschinenantriebe GmbH Industrial rives Planetary gearboxes Economy Series for Servomotors 2 ZF-uoplan 2K Two-speed Gearboxes ZF-Ecolift Elevator Gearboxes ZF-Servoplan G ompact Gearbox ZF-Tiratron
More informationPrinciples of Engineering Midterm Exam
Principles of Engineering Midterm Exam Instructions: Respond to all questions below by circling the correct answer, or by writing your answer in the blank space. Use a dark pen/pencil and write neatly
More informationAE / AER Series. AER Series
AE / AER Series Characteristic Highlights True helical gear design Precision helical gearing increases tooth to tooth contact ratio by over % vs spur gearing. The helix angle produces smooth and quiet
More informationAdvanced Mechanical Principles
Unit 36: Unit code Advanced Mechanical Principles R/615/1504 Unit level 5 Credit value 15 Introduction A mechanical engineer is required to have an advanced knowledge of most of the machinery used within
More informationAngle recap. Angular position: Angular displacement: s. Angular velocity: Angular Acceleration:
Angle recap Angular position: Angular displacement: s Angular velocity: Angular Acceleration: Every point on a rotating rigid object has the same angular, but not the same linear motion! Today s lecture
More informationQ. 1 Q. 5 carry one mark each.
General ptitude G Set-8 Q. 1 Q. 5 carry one mark each. Q.1 The chairman requested the aggrieved shareholders to him. () bare with () bore with (C) bear with (D) bare Q.2 Identify the correct spelling out
More informationTribology Prof. Dr. Harish Hirani Department of Mechanical Engineering Indian Institute of Technology, Delhi
Tribology Prof. Dr. Harish Hirani Department of Mechanical Engineering Indian Institute of Technology, Delhi Lecture No. # 29 Rolling Element Bearings (Contd.) Welcome to 29 th lecture of video course
More informationME Final Exam. PROBLEM NO. 4 Part A (2 points max.) M (x) y. z (neutral axis) beam cross-sec+on. 20 kip ft. 0.2 ft. 10 ft. 0.1 ft.
ME 323 - Final Exam Name December 15, 2015 Instructor (circle) PROEM NO. 4 Part A (2 points max.) Krousgrill 11:30AM-12:20PM Ghosh 2:30-3:20PM Gonzalez 12:30-1:20PM Zhao 4:30-5:20PM M (x) y 20 kip ft 0.2
More informationCTV series CHARACTERISTICS LINEAR UNITS
CTV series CHARACTERISTICS The CTV series describes s with a precision ball screw drive and two parallel, integrated, Zerobacklash rail guides. Compact dimensions allow high performance features such as,
More information