MECHANICAL ANALYSIS OF THE R.P.C./M.D.T. LIFTING FRAME FOR TRANSPORT IN ATLAS PRODUCTION VERSION

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1 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 NIKHEF Reference no.: TIS/EDMS NO.: AMP-AQ-0 R1946 MECHANICAL ANALYSIS OF THE R.P.C./M.D.T. LIFTING FRAME FOR TRANSPORT IN ATLAS A.Korporaal, C.Snippe PRODUCTION VERSION Abtract The purpoe of the mechanical calculation i to invetigate tre and afety factor in the lifting frame ued to tranport the R.P.C. and M.D.T. chamber together into the ATLAS pit at CERN. Thee lifting frame have to comply with the CERN SAFETY CODE D1 (Rev.) The numerical analyi wa done by the I-DEAS Finite Element Analyi oftware. June 005 Page 1 of 1

2 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 SUMMARY: A one of the experiment, intergrated in de Large Hadron Collider (LHC) at CERN near Geneva, the ATLAS-detector will be operational in 006. The detector i aembled with everal ub-experiment with characteritic unique ubdetector. The Reitive Plate Counter (R.P.C.) and Monitored Dr)ift Tube muonchamber (M.D.T.) become a a et tranported together into the ATLAS-pit. For the outer (96) R.P.C./M.D.T, it i planned to do thi operation with a lifting device Thi lifting device have to be according CERN afety code a noted in EDMS Rev. D1 LIFTING EQUIPMENT Publication date: January 1997 Thi mean that all equipment mut be labeled and CE- certified delivered to the client. CONSULTED STANDARDS: EN SAFETY OF MACHINERY Baic concept-general principle for deign Part 1: Baic terminology, methodelogy EN SAFETY OF MACHINERY Baic concept-general principle for deign Part : Technical principle and pecification. EN SAFETY OF MACHINERY Principle for rik aement June 005 Page of 1

3 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 DATA OF SUPPLIERS/COMPANIES OF PRODUCTS MENTIONED ON DWG.: AMP-AQ-0 PARTS 01,0,03,04,06 and 07 are CE-certified/labeled and delivered by: MENNENS Amterdam. Potbox AB Amterdam. Fax : +31 (0) Amterdam@mennen.nl Internet: PART 05 i PRODUCED/ DELIVERED by: Van HALTEREN METAAL. MARCONIWEG 375 LS Bunchoten-Spakenburg. Fax : +31 (0) Internet: Van Halteren Metaal B.V.' quality ytem i certified acc. ISO 900/AQAP 10 by Det Norke Verita (certificate nr. QSC - 35, rev.1) PART 05 i TESTED by: MENNENS Amterdam. Potbox AB Amterdam. Date of tet: 0 February 004 Ditinguihing mark nr. 1: NF-87 (Frame + lifting part) Ditinguihing mark nr. : NF-88 (Frame + lifting part) Two frame are teted in total. PART 05 i CE-certified by: June 005 Page 3 of 1

4 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 Figure 1 SITUATION LENGTH OF PARTS (ee figure 1) L1 = 4315/ = 158 mm ; L= 30/ = 1160 mm; L3= 450 mm ; L4= 158 mm ; L5= 365 mm WEIGHT OF PARTS MDT/RPC TRANSPORT FRAME 3000 N. MDT 3750 N. RPC 3750 N. LIFTING FRAME (all part incl.) approx. 000 N. tanα = ; α = 41, 37 tan β = ; β = 61, 74 tanγ = ; γ = 8, 6 1 = 4 ( ) 315 N. F V 1 = F 315 SINα = SIN 41,37 F V1 CHAIN = = 479N FH = FCHAIN.COSα. = 3549N F = F.COSγ 316N FH = FH.SINγ = 1680N H 1 H = June 005 Page 4 of 1

5 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 There will occur 3 different load on the frame: (See figure 1 and ) 1. Compreion force (FH1 and FH) in the hollow ection L= *L1= 4315 mm and L=*L=360 mm.. A bending moment (Mb1) will occur becaue of the weight of the hollow ection. 3. A bending moment (Mb) (Fh*a) will occur becaue of the ditance from the chain connection and gravity axi of both hollow ection. NOTE: Becaue of the moment and compreion force we have to check for BUCKLING-effect. Figure LOADS / CALCULATION Calculation on (Euler) buckling on CENTRIC LOADED BEAMS. A firt try we chooe for a hollow ection tube ; Material: Fe37--DIN59411 Ix=Iy= 47,07 x 10 4 mm 4 ; Area= 8,96 x 10 mm ; Ma= 6,76 kg/m Wbending= 15,68 x 10 3 mm 3 ; E= 1x10 4 mm 4 ; Lbuckling=L1*= 4315 mm ; a= 90mm 4 47,07.10 i x = iy = =,9mm. 8,96.10 L BU 4315 λ = = = 188,5 Euler elatic range. i,9 Maximum buckling tre allowed: π. E λ π.1x10 188,5 _ 4 bu = = = 58, N mm June 005 Page 5 of 1

6 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 Caued by moment fig. -0: M b1 = ql.. l ql.. l = ql. 4 8 M 1.6,76.9, b1 b1 = = = 3 Wb 8.15, ,9N mm Caued by moment fig. -03: M b b = = = 3 Wb 15,68.10 Caued by the compreion force FH1 F A ,96.10 H1 c = = = 0,4N mm 3,5N mm On top of the beam the maximum tenion i : -9,9-0,4-3,5 = -33,8 N/mm (compreive tre) On the bottom ide the maximum tenion i : +9,9 +0,4-3,5 = +6,8 N/mm (tenion tre) bu Safety factor= = = 1,7 _ max 58, 33,8 In accordance with other lifting part (chain, lifting belt, fitting etc., which have afety factor from 4 till 7 it would be deirable to have for the lifting frame a afety factor in thi range. Thi mean that the profile mentioned above i not atifying! We will now make a imilar calculation for a hollow ection tube Material: Fe37--DIN59411 ; Ix=Iy= 141 x 10 4 mm 4 ; Area= 15 x 10 mm ; Ma= 11,3 kg/m Wbending= 35,3 x 10 3 mm 3 ; E= 1x10 4 mm 4 ; Lbuckling= L1*= 4315 mm ; a=90mm i x = iy = = 30,66mm L BU 4315 λ = = = 141 Euler elatic range. i 30,66 Maximum buckling tre allowed: π. E λ.1x _ 4 bu = = = π 104, N mm June 005 Page 6 of 1

7 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 Caued by moment fig. -0: M b1 = ql.. l ql.. l = ql. 4 8 M 1.11,3.9, b1 b1 = = = 3 Wb 8.35,3.10 7,3N mm Caued by moment fig. -03: M b b = = = 3 Wb 35,3.10 9,1 N mm Caued by the compreion force FH1 F 316 H1 c = = = A 15.10,1 N mm On top of the beam the maximum tenion i : -7,3-9,1 -,1 = -18,5 N/mm (compreive tre) On the bottom ide the maximum tenion i : +7,3 +9,1-,1 = +14,3 N/mm (tenion tre) _ bu Safety factor= = = 5,63 max 104, 18,5 Note: Thi afety factor i a wort cae cenario, becaue in real thi tenion i divided along the croection of the tube. Another calculation uing ecan-formula give a higher afety factor. In pite of thi we ue a hollow ection tube for the lifting frame.. Thi i mainly given by beam geometry imperfection (f.i. traightne), currency apect, etc. The tube (part 0-drwg. AMP-AQ-01) are identical a thoe calculated above. However, they are horter and ubject to lower force, thu afer concerning (Euler)buckling. A buckling calculation i not relevant in thi cae. June 005 Page 7 of 1

8 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 TENSION STRESS AND MOMENT IN WELDING JOINTS NOTE! FOR PRACTICAL AND SAFETY REASONS IS CHOSEN FOR : Welding height = 3 mm. All welding parallel w.r.t. the ocurring load (Fh) will take up thi load. (Figure ) All welding perpendicular to the occurring load (Fh) will take up the occuring moment. (Figure 3) Max. allowable tenion tre (proportional limit) = 40 N/mm) SEE FIGURE 3 and 4 (VIEW P (drwg.: AMP-AQ-01 PART 01 TO PART 0) Figure 3 Total welding length (LTOT) = ( )= 0 mm. ; a= 3 mm ; FH= 3549 N. τ F 3549 N 40 H prop. = = = 5,4 ; SAFETY FACTOR = = = 44,4 L.a 0.3 mm τ 5,4 TOT SEE FIGURE 4 Ditance b= 170 mm τ F N 40 H prop. = = = 3,91 ; SAFETY FACTOR = = = 61,3 170.A mm τ 3,91 TOT June 005 Page 8 of 1

9 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 Figure 4 Now we make a imilar calculation for the hort ection. SEE FIGURE 5 and 6 (VIEW P drwg.: AMP-AQ-01 PART 01 TO PART 0) Figure 5 Total welding length (LTOT) =.91= 18 mm. ; a= 3 mm ; FH= 3549 N. τ F 3549 N 40 H prop. = = = 6,5 ; SAFETY FACTOR = = = 36,9 L.a 18.3 mm τ 6,5 TOT June 005 Page 9 of 1

10 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 SEE FIGURE 6 Ditance b= 90,8 mm Figure 6 τ F N 40 H prop. = = = 7,4 ; SAFETY FACTOR = = = 3,4 90,8.A 90, mm τ 7,4 TOT June 005 Page 10 of 1

11 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 SURFACE PRESSURE IN LOCKING CLAMP PINS and HOLE PLATE 1 (PART 0 DWG. AMP-AQ-01 SEE FIGURE 5 R1=7 mm ; R=-9mm ; t=18 mm. Figure 5 Auming Hertz-formula (with Poion-ratio= 0,3) i valid : Note: For other Poion-ratio ee: Tymochenko = = = 0,0317 R = 31,5mm. R R R = SURFACE F chain.e 0,175. tr x10 SURFACE = 0,175. = 479,6N 18.31,5 mm ACCORDING NEN 330-A.3 A MAXIMUM SURFACE PRESSURE OF d IS ALLOWED FOR STATIC LOADS. THE OCCURING PRESSURE IS 479,6 N//mm SAFETY FACTOR = *360/479,6= 1,5 June 005 Page 11 of 1

12 ATLAS-MDT/RPC-ASSEMBLY LIFTING FRAME (CERN) AMP-AQ-0 VON MISES STRESS IN LOCKING CLAMP PINS and HOLE PLATE 1 (PART 0 DWG. AMP-AQ-01 Figure 6 Figure 7 (below) Fchain=3549N. a1=,9mm a=4,9mm a3=3,5mm t=18mm. Proportional limit = 40N/mm Maximum occuring tre (tre reultant0 = 8 N/mm Safety factor = Proportional limit / tre reultant = 40 / 8 = 8,57 June 005 Page 1 of 1