INPUT DATA FOR TORSIONAL VIBRATION CALCULATIONS (TVC)
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1 INPUT DATA FOR TORSIONAL VIBRATION CALCULATIONS (TVC) (POWER UNIT FOR MARINE INSTALLATIONS) Name of Vessel / New Building No. Name of Shipyard / Yard No. Name of Owner / Shipping Company Address of Owner / Shipping Company Volvo Penta engine type Purpose of engine drive system (e.g. propulsion, auxiliary, emergency, pump alternat) Engine continuous power (kw) and speed (rpm), (f alternat the TVC is made with 110 % intermittent power) Classification Society f approval of the TVC (f classified installations only) Order No. of Volvo Penta impter/dealer/sales representative The input data on these sheets is issued by (Name, Company, sign.) Date F Volvo Penta Head Office use only Engine der No. TVC der No. Note I Suppl infmation under paragraphs 1.0 and 2.0 1
2 GUIDELINES The specified data on these sheets is required f carrying out tsional vibration calculations. It is extremely imptant that these data sheets, after the data has been filled in, are sent to AB Volvo Penta (under address below) together with the engine der fm. A certain amount of time must be allowed f handling the TVC. Befe delivery of the engine the TVC should be approved by the Classification Society. Figure I shows a SCHEMATIC lay-out of an engine drive system. The numbers indicated in the figure cresponds to the numbered headings in the text. Follow the numbered headings step by step (and this way proceed through the figure) and fill in the requested data where applicable. Delete mark not applicable (N/A) f systems, components data not applicable f the actual installation. ALTERNATIVE DATA asked f should be filled in when it is difficult to give the requested primary data. Should any of the configurations shown in Figure 1 not crespond to the actual installation, supply input data f the TVC by using the fmats under applicable headings and refer to a supplied schematic lay-out of the actual installation. The data to be filled in can either be given in Imperial (English), US, metric (MKSA) SI units. However, SI units are preprinted, so if other than SI units are used it should be noted what unit is being used. Please sent this fm and other necessary documentation to: AB Volvo Penta Quality system & classification dept, Z1.1 S Gothenburg SWEDEN to fax no: MASS MOMENT OF INERTIA Data requested f mass moment of inertia can be given in different ways, as moment of inertia flywheel mass. Moment of inertia is designated J and can be expressed in units of kgm 2 (lb.ft 2 ) kpms 2 (lbf.ft.s 2 ). The latter units indicate that the quantity has been divided by gravity. It should also be noted to which axle the moment of inertia is referred (if it is not understood by the design, i.e. a symmetric axle). Flywheel mass is desionated md 2, GD 2 WR 2 and expressed in units of kgm 2 (lb.ft 2 ), kpm 2 (lbf.ft 2 ) lbf.ft 2 (kpm 2 ) respectively. The following relation applies: md 2 = 4J GD 2 = 4gJ WR 2 = gj where g is the gravity (approx m/s 2 ) 2
3 SCHEMATIC LAY-OUT OF AN ENGINE DRIVE SYSTEM (The numbers indicated in the figure cresponds to the numbered headings in the text.) Figure 1. 3
4 1. Power take-off (PTO) at front end (DAMPER SIDE) of engine 1.0 VOLVO PENTA will supply infmation under this paragraph! Continue to paragraph 1.1. F this der the following standard equipment will be delivered with the engine f connection to the engine s front end (e.g. bilge pump, flush pump, hydraulic pump, extra drive, extra pulley, charging alternat, clutch, coupling, reduction gear, pto, etc.): 1.1 Disengageable coupling (clutch), rotating at engine speed Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm Flange coupling, rotating at engine speed Moment of inertia f the complete coupling, J:... kgm 2 Flywheel mass f the complete coupling, GD 2 :... kgm 2 Flange diameter:... mm Flange thickness:... mm Hub outer diameter:... mm Hub length:... mm Overall length:... mm Material:... Drawing of the coupling, indicating material and dimensions. 1.3 Flexible coupling, rotating at engine speed F couplings supplied by Volvo Penta this data is not required. Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... ) Relative damping fact, Ψ :... Allowable energy loss, PkW:... kw 4
5 1.4 Belt pulley (driving pulley), rotating at engine speed Moment of inertia, J:... kgm 2 Flywheel mass,gd 2 :... kgm 2 Pitch diameter f the belt:... mm Drawing of the pulley, indicating material and dimensions. 1.5 Shaft, rotating at engine speed Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the moment of inertia f all masses on the shaft if not given under another heading. Shaft diameter:... mm Shaft length:... mm Shaft material: Disengageable coupling (clutch), rotating at engine speed Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side,gd 2 :... kgm 2 pto-side, GD 2 :... kgm Flange coupling, rotating at engine speed Moment of inertia f the complete coupling, J:... kgm 2 Flywheel mass f the complete coupling, GD 2 :... kgm 2 Flange diameter:... mm Flange thickness:... mm Hub outer diameter:... mm Hub length:... mm Overall length:... mm Material:... Drawing of the coupling, indicating material and dimensions. 1.8 Flexible coupling, rotating at engine speed F couplings supplied by Volvo Penta this data is not required. Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 5
6 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... Relative damping fact, Ψ:... Allowable energy loss, PkW:... kw 1.9 Driven unit, rotating at engine speed Pump: Speed range f which pump is engaged:... rpm Max load:... kw Moment of inertia of the complete unit, J:... kgm 2 Flywheel mass of the complete unit, GD 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. pump gear etc.). Compress: Speed range f which compress is engaged:... rpm Max load:... kw To supply sufficient data f a complex compress, the alternative data below is just an example. Contact Volvo Penta Sales Engineering in case of such an installation. Max gas pressure in the cylinders:... N/mm 2 Moment of inertia f the complete unit, J:... kgm 2 Flywheel mass f the complete unit, GD 2 :... kgm 2 Tsional stiffness of the main shaft:... Curve showing the gas pressure in the cylinders f one stroke. Curve no:... Drawing of the compress crankshaft, indicating material and dimensions. Drawing no:... Mass elastic dynamic data of the compress: Mass Moment of inertia Stiffness J (kgm 2 ) c (Nm/rad) damper gear cyl 1 cyl flywheel Nm/rad 6
7 Unbalanced masses: ( unbalanced fces, in N)... Total weight of the rotating masses per cylinder:... Total weight of the reciprocating (oscillating) masses per cylinder:... kg kg Alternat: Drawing of the alternat shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. fan, rot etc.) 1.10 Belt pulley (driven pulley), rotating at driven unit s (1.18) speed Moment of inertia, J:... kgm 2 Flywheel mass, GD 2 :... kgm 2 Pitch diameter f the belt:... mm Drawing of the pulley, indicating material and dimensions Jockey pulley Moment of inertia, J:... kgm 2 Flywheel mass,gd 2 :... kgm 2 Pitch diameter f the belt:... mm Drawing of the pulley, indicating material and dimensions Belts V-belts, Poly-V-belts, Toothed belts: Stiffness (in drag):... Nm/rad Number of belts in parallel:... qty Make and type of the belt:... Cross-section area of the belt:... mm 2 Modulus of elasticity of the material:... N/mm 2 Damping (can be set to 0, if not available): Distance between the shafts of the driving and the driven pulley Distance between the shafts:... mm 1.14 Shaft, rotating at driven unit s (1.18) speed Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the moment of inertia f all masses on the shaft if not given under another heading. Shaft diameter:... mm Shaft length:... mm Shaft material:... 7
8 1.15 Disengageable coupling (clutch), rotating at driven unit s (1.18) speed Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm Flange coupling, rotating at driven unit s (1.18) speed Moment of inertia f the complete coupling, J:... kgm 2 Flywheel mass f the complete coupling, GD 2 :... kgm 2 Flange diameter:... mm Flange thickness:... mm Hub outer diameter:... mm Hub length:... mm Overall length:... mm Material:... Drawing of the coupling, indicating material and dimensions Flexible coupling, rotating at driven unit s (1.18) speed F couplings supplied by Volvo Penta this data is not required. Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... ) Relative damping fact, Ψ:... Allowable energy loss, PkW:... kw 1.18 Driven unit Speed of the driven unit:... ratio of the belt drive, (speed of engine : speed of driven unit):... rpm 8
9 Pump: Speed range f which pump is engaged:... rpm Max load:... kw Moment of inertia of the complete unit, J:... kgm 2 Flywheel mass of the complete unit, GD 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. pump gear etc.). Compress: Speed range f which compress is engaged:... rpm Max load:... kw To supply sufficient data f a complex compress, the alternative data below is just an example. Contact Volvo Penta Sales Engineering in case of such an installation. Max gas pressure in the cylinders:... N/mm 2 Moment of inertia f the complete unit, J:... kgm 2 Flywheel mass f the complete unit,gd 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Curve showing the gas pressure in the cylinders f one stroke. Curve no:... No. Drawing of the compress crankshaft, indicating material and dimensions. Mass elastic dynamic data of the compress: Mass Moment of inertia Stiffness J (kgm 2 ) c (Nm/rad) damper gear cyl 1 cyl flywheel Unbalanced masses: ( unbalanced fces, in N) Total weight of the rotating masses per cylinder:... Total weight of the reciprocating (oscillating) masses per cylinder:... kg kg Alternat: Drawing of the alternat shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. fan, rot etc.) 9
10 2. Power take-off (PTO) at rear end (FLYWHEEL SIDE) of engine 2.0 VOLVO PENTA will supply infmation under this paragraph! Continue to paragraph 2.1. F this der the following standard equipment will be delivered with the engine f connection to the engine s rear end: Reduction gear (Reverse gear): Gear ratio (speed of input shaft : output shaft): Propeller shaft flange included: Coupling, engine reduction gear: Other equipment: (power take-off, clutch etc.) 2.1 Coupling, engine reduction gear Only to be filled in if not delivered by Volvo Penta! F couplings supplied by Volvo Penta this data is not required. Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... ) Relative damping fact, Ψ :... Allowable energy loss, PkW:... kw 2.2 Reduction gear (Reverse gear) Only to be filled in if not delivered by Volvo Penta!... Gear ratio:... Drawing of the reduction gear, indicating material and dimensions of the shafts and wheels. (to be supplied on separate paper) Moment of inertia flywheel mass f all shafts and wheels. Tsional stiffness f all shafts. Diameter of all shafts. Gear ratios. 10
11 2.3 Disengageable coupling (clutch), rotating at speed of engine reduction gear output shaft Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm Flange coupling, rotating at speed of engine reduction gear output shaft Moment of inertia f the complete coupling, J:... kgm 2 Flywheel mass f the complete coupling, GD 2 :... kgm 2 Flange diameter:... mm Flange thickness:... mm Hub outer diameter:... mm Hub length:... mm Overall length:... mm Material:... Drawing of the coupling, indicating material and dimensions. 2.5 Flexible coupling, rotating at speed of engine reduction gear output shaft... (data f the following flexible couplings, if of standard specification, are in the Volvo Penta TVC library and therefe data f these need not to be given below: N-Mex, Vulkan, Centa, Stromag, Holset and couplings of make RBD, Ld and Tflex used together with Twin Disc reduction gears) Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... ) Relative damping fact, Ψ :... Allowable energy loss, PkW:... kw 2.6 Belt pulley (driving pulley), rotating at speed of engine reduction gear output shaft Moment of inertia, J:... kgm 2 Flywheel mass, GD 2 :... kgm 2 Pitch diameter f the belt:... nm Drawing of the pulley, indicating material and dimensions. 11
12 2.7 Shaft (intermediate shaft, countershaft, shaft included in propeller shaft transmission, etc.), rotating at speed of engine reduction gear output shaft Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the moment of inertia f all masses on the shaft if not given under another heading. Shaft diameter:... mm Shaft length:... mm Shaft material: Disengageable coupling (clutch), rotating at speed of engine reduction gear output shaft Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm Flange coupling (incl. split- clamp-coupling), rotating at speed of engine reduction gear output shaft Moment of inertia f the complete coupling, J:... kgm 2 Flywheel mass f the complete coupling, GD 2 :... kgm 2 Flange diameter:... mm Flange thickness:... mm Hub outer diameter:... mm Hub length:... mm Overall length:... mm Material:... Drawing of the coupling, indicating material and dimensions Flexible coupling, rotating at speed of engine reduction gear output shaft F couplings supplied by Volvo Penta this data is not required. Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... No. Relative damping fact, Ψ:... Allowable energy loss, PkW:... kw 12
13 2.11 Driven unit, rotating at speed of engine reduction gear output shaft Alternat: Drawing of the alternat shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. fan, rot etc.) Compress: Speed range f which compress is engaged:... rpm Max load:... kw To supply sufficient data f a complex compress, the alternative data below is just an example. Contact Volvo Penta Sales Engineering in case of such an installation. Max gas pressure in the cylinders:... N/mm 2 Moment of inertia f the complete unit, J:... kgm 2 Flywheel mass f the complete unit, GD 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Curve showing the gas pressure in the cylinders f one stroke. Curve no:... No. Drawing of the compress crankshaft, indicating material and dimensions. Mass elastic dynamic data of the compress: Mass Moment of inertia Stiffness J (kgm 2 ) c (Nm/rad) damper gear cyl 1 cyl flywheel Unbalanced masses: ( unbalanced fces, in N). Total weight of the rotating masses per cylinder:... Total weight of the reciprocating (oscillating) masses per cylinder:... kg kg Pump: Speed range f which pump is engaged:... rpm Max load:... kw Moment of inertia of the complete unit, J:... kgm 2 Flywheel mass of the complete unit, GD 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. pump gear etc.). 13
14 2.12 Propeller shaft, rotating at speed of engine reduction gear output shaft Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the moment of inertia f all masses on the shaft if not given under another heading. Shaft diameter:... mm Shaft length:... mm Shaft material: Propeller, rotating at speed of engine reduction gear output shaft The propeller rotating in water: Moment of inertia f the propeller, J:... kgm 2 Flywheel mass f the propeller, GD 2 :... kgm 2 The propeller out of water (exclusive allowance f water rotating in the same direction): Moment of inertia f the propeller, J:... kgm 2 Flywheel mass f the propeller, GD 2 :... kgm 2 Drawing of the propeller, indicating: material, dimensions (diameter), number of blades Belt pulley (driven pulley), rotating at driven unit s (2.22) propeller s (2.24) speed Moment of inertia, J:... kgm 2 Flywheel mass, GD 2 :... kgm 2 Pitch diameter f the belt:... mm Drawing of the pulley, indicating material and dimensions Jockey pulley Moment of inertia, J:... kgm 2 Flywheel mass, GD 2 :... kgm 2 Pitch diameter f the belt:... mm Drawing of the pulley, indicating material and dimensions Belts V-belts, Poly-V-belts, Toothed belts: Stiffness (in drag):... Nm/rad Number of belts in parallel:... No. Make and type of the belt: Cross-section area of the belt:... mm Modulus of elasticity of the material:... N/mm 2 Damping (can be set to 0, if not available): Distance between the shafts of the driving and the driven pulley Distance between the shafts:... mm 14
15 2.18 Shaft, rotating at driven unit s (2.22) propeller s (2.24) speed Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the moment of inertia f all masses on the shaft if not given under another heading. Shaft diameter:... mm Shaft length:... mm Shaft material: Disengageable coupling (clutch), rotating at driven unit s (2.22) propeller s (2.24) speed Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm Flange coupling, rotating at driven unit s (2.22) propeller s (2.24) speed Moment of inertia f the complete coupling, J:... kgm 2 Flywheel mass f the complete coupling, GD 2 :... kgm 2 Flange diameter:... mm Flange thickness:... mm Hub outer diameter:... mm Hub length:... mm Overall length:... mm Material:... Drawing of the coupling, indicating material and dimensions Flexible coupling, rotating at driven unit s (2.22) propeller s (2.24) speed F couplings supplied by Volvo Penta this data is not required. Moment of inertia, both halves, engine side, J:... kgm 2 pto-side, J:... kgm 2 Flywheel mass,, engine side, GD 2 :... kgm 2 pto-side, GD 2 :... kgm 2 The data below are given f an ambient temp. f the engine installation of:... C Nominal tque of the coupling, TkN:... Nm Max tque of the coupling, Tk max :... Nm Max continuous vibraty tque at 10 Hz, TkW:... Nm Dynamic tsional stiffness, ct dyn :... Nm/rad (if not linear, it should be given as a function of load on the coupling, curve no:... No. Relative damping fact, Ψ:... Allowable energy loss, PkW:... kw 15
16 2.22 Driven unit Speed of the driven unit:... ratio of the belt drive and reduction gear (speed of engine : speed of driven unit):... rpm Alternat: Drawing of the alternat shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. fan, rot etc.) Compress: Speed range f which compress is engaged:... rpm Max load:... kw To supply sufficient data f a complex compress, the alternative data below is just an example. Contact Volvo Penta Sales Engineering in case of such an installation. Max gas pressure in the cylinders:... N/mm 2 Moment of inertia f the complete unit, J:... kgm 2 Flywheel mass f the complete unit,gd 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Curve showing the gas pressure in the cylinders f one stroke. Curve no:... No. Drawing of the compress crankshaft, indicating material and dimensions. Mass elastic dynamic data of the compress: Mass Moment of inertia Stiffness J (kgm 2 ) c (Nm/rad) damper gear cyl 1 cyl flywheel Unbalanced masses: ( unbalanced fces, in N) Total weight of the rotating masses per cylinder:... kg Total weight of the reciprocating (oscillating) masses per cylinder:... kg Pump: Speed range f which pump is engaged:... rpm Max load:... kw Moment of inertia of the complete unit, J:... kgm 2 Flywheel mass of the complete unit, GD 2 :... kgm 2 Tsional stiffness of the main shaft:... Nm/rad Drawing of the main shaft, indicating: material, dimensions, the position of masses on the shaft, the moment of inertia f all masses on the shaft (i.e. pump gear etc.). 16
17 2.23 Propeller shaft, rotating at propeller s (2.24) speed Drawing of the shaft, indicating: material, dimensions, the position of masses (belt pulleys, bearings etc.) on the shaft, the moment of inertia f all masses on the shaft if not given under another heading. Shaft diameter:... mm Shaft length:... mm Shaft material: Propeller Speed of the propeller:... ratio of the belt drive and reduction gear (speed of engine : speed of propeller):... rpm The propeller rotating in water: Moment of inertia f the propeller, J:... kgm 2 Flywheel mass f the propeller, GD 2 :... kgm 2 The propeller out of water (exclusive allowance f water rotating in the same direction): Moment of inertia f the propeller, J:... kgm 2 Flywheel mass f the propeller, GD 2 :... kgm 2 Drawing of the propeller, indicating: material, dimensions (diameter), number of blades Note! Can not be dered from publication ste 17
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