*HEADING Petit pneu AXISYMMETRIC (HALF CROSS-SECTION) HYPERELASTIC TIRE AIR COUPLED ACOUSTIC MODEL STEP 1: INFLATE TIRE TO 200 KPa UNITS: KG, M *PREPRINT,MODEL=YES *RESTART,WRITE,FREQ=100 *INCLUDE,INPUT=P_tire_acoustic_air.inp *NODE,NSET=NTIRE,INP=tiretransfer_node.inp *NODE,NSET=TIRE-RIM 199, *ELEMENT,TYPE=CGAX4H,ELSET=TREAD 1, 45, 55, 54, 44 2, 35, 45, 44, 34 *ELEMENT,TYPE=CGAX3H,ELSET=TREAD 3, 27, 35, 34 *ELEMENT,TYPE=CGAX4H,ELSET=SIDE 4, 3, 9, 7, 1 5, 9, 15, 13, 7 6, 15, 21, 19, 13 7, 21, 27, 25, 19 8, 27, 34, 32, 25 *ELEMENT,TYPE=CGAX4H,ELSET=BELT 9, 44, 54, 51, 41 10, 34, 44, 41, 32 *ELEMENT, TYPE=RAX2, ELSET=RIM 11, 1, 3, 12, 3, 9, *RIGID BODY, ELSET=RIM, REFNODE=TIRE-RIM *ELSET,ELSET=CARCASS SIDE,BELT *ELEMENT,TYPE=SFMGAX1,ELSET=MEM_BELT1 101, 110,114 102, 106,110 *ELEMENT,TYPE=SFMGAX1,ELSET=MEM_BELT2 111, 111,115 112, 107,111 *ELEMENT,TYPE=SFMGAX1,ELSET=MEM_CARCASS 121, 116,118 122, 118,120 123, 120,122 124, 122,124 125, 124,126 126, 126,128 127, 128,130 *EMBEDDED ELEMENT,HOST=CARCASS,ROUNDOFF TOL=5.E-4 MEM_CARCASS, *EMBEDDED ELEMENT,HOST=BELT,ROUNDOFF TOL=5.E-4 MEM_BELT1,MEM_BELT2 *SURFACE SECTION,ELSET=MEM_BELT1 *REBAR LAYER BELT1, 0.2118683E-6, 1.16E-3, 0.0, BELT, 70.0 *SURFACE SECTION,ELSET=MEM_BELT2 *REBAR LAYER BELT2, 0.2118683E-6, 1.16E-3, 0.0, BELT, 110.0 *SURFACE SECTION,ELSET=MEM_CARCASS *REBAR LAYER MEM_CARCASS,0.4208352E-6,1.00E-3,0.0,CARCASS,0.0 *SOLID SECTION,ELSET=TREAD,MATERIAL=RUBBER, CONTROLS=ROLLCONT *SOLID SECTION,ELSET=SIDE,MATERIAL=RUBBER, CONTROLS=ROLLCONT *SOLID SECTION,ELSET=BELT,MATERIAL=RUBBER, CONTROLS=ROLLCONT *SECTION CONTROLS,NAME=ROLLCONT *********************************** *MATERIAL,NAME=RUBBER *HYPERELASTIC,N=1 1.0e6 *DENSITY 1100., *DAMPING,STRUCTURAL=0.16 *********************************** *MATERIAL,NAME=BELT *ELASTIC,TYPE=ISO 172.2E+09, 0.3 *DENSITY 5900., *********************************** *MATERIAL,NAME=CARCASS *ELASTIC,TYPE=ISO 9.87E+9, 0.3 *DENSITY 1500., *********************************** *NSET,NSET=RIMNOD 9, 3, 1 *NSET,NSET=TIRE-SYM 51, 54, 55 *ELSET,ELSET=SOLID,GENERATE 1, 12,1 *SURFACE,NAME=TIRE-LINER BELT, S3 SIDE, S3 *TIE,NAME=AIR-TIRE,ADJUST=YES AIR-LINER,TIRE-LINER *********************************** *STEP,NLGEOM=YES 1: INFLATION *STATIC 0.25, 1.0 *BOUNDARY TIRE-RIM, 1, 2 TIRE-RIM, 6, RIMNOD, 5, TIRE-SYM, 2, TIRE-SYM, 5, *DSLOAD TIRE-LINER, P, 200.E3 *ADAPTIVE MESH,ELSET=AIR,FREQ=1,MESH SWEEP=5 *PRINT,ADAPT=YES *NODE PRINT,FREQUENCY=0 *EL PRINT,FREQUENCY=0 *OUTPUT,FIELD,FREQ=1 *NODE OUTPUT U *ELEMENT OUTPUT S,LE *OUTPUT,HISTORY,FREQ=1,VAR=PRE *END STEP