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rgzh木虫 (小有名气)
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[交流]
【求助】ansys的问题
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感觉很简单的一个问题,课本上有例子,但我照做总是不对,求解。 一铜块在钢上滑动,钢块固定,尺寸及所受载荷如图(见附件),钢块与铜块之间摩擦系数为0.2,速度为1m/s,计算时间为3.75s,求钢块和铜块由于摩擦产生的温度场,及应力分布。初始温度30摄氏度,其他均为国际单位制。 |
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rgzh
木虫 (小有名气)
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命令流: /PREP7 !* ET,1,PLANE13 !* KEYOPT,1,1,4 KEYOPT,1,2,0 KEYOPT,1,3,0 KEYOPT,1,4,0 KEYOPT,1,5,0 !* !* MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,DENS,1,,7800 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,KXX,1,,66.6 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,C,1,,460 MPTEMP,,,,,,,, MPTEMP,1,0 UIMP,1,REFT,,,30 MPDATA,ALPX,1,,1.06e-5 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,EX,1,,206e9 MPDATA,PRXY,1,,0.3 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,DENS,2,,8900 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,KXX,2,,383 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,C,2,,390 MPTEMP,,,,,,,, MPTEMP,1,0 UIMP,2,REFT,,,30 MPDATA,ALPX,2,,1.75e-5 MPTEMP,,,,,,,, MPTEMP,1,0 MPDATA,EX,2,,103e9 MPDATA,PRXY,2,,0.3 RECTNG,0,5,0,1.25, RECTNG,0,1.25,1.25,2.5, FINISH /SOL FINISH /PREP7 ESIZE,0.25,0, MSHAPE,0,2D MSHKEY,0 !* CM,_Y,AREA ASEL, , , , 1 CM,_Y1,AREA CHKMSH,'AREA' CMSEL,S,_Y !* AMESH,_Y1 !* CMDELE,_Y CMDELE,_Y1 CMDELE,_Y2 !* APLOT TYPE, 1 MAT, 2 REAL, ESYS, 0 SECNUM, !* CM,_Y,AREA ASEL, , , , 2 CM,_Y1,AREA CHKMSH,'AREA' CMSEL,S,_Y !* AMESH,_Y1 !* CMDELE,_Y CMDELE,_Y1 CMDELE,_Y2 !* !* !* /COM, CONTACT PAIR CREATION - START CM,_NODECM,NODE CM,_ELEMCM,ELEM CM,_KPCM,KP CM,_LINECM,LINE CM,_AREACM,AREA CM,_VOLUCM,VOLU /GSAV,cwz,gsav,,temp MP,MU,1,0.2 MAT,1 MP,EMIS,1,0 R,3 REAL,3 ET,2,169 ET,3,172 R,3,,,1.0,0.1,0, RMORE,,,1.0E20,0.0,1.0, RMORE,0.0,0,1.0,0,1.0,0.5 RMORE,0,1.0,1.0,0.0,,1.0 KEYOPT,3,3,0 KEYOPT,3,4,0 KEYOPT,3,5,0 KEYOPT,3,7,0 KEYOPT,3,8,0 KEYOPT,3,9,0 KEYOPT,3,10,2 KEYOPT,3,11,0 KEYOPT,3,12,0 KEYOPT,3,2,0 KEYOPT,3,1,1 ! Generate the target surface LSEL,S,,,3 CM,_TARGET,LINE TYPE,2 NSLL,S,1 ESLN,S,0 ESURF CMSEL,S,_ELEMCM ! Generate the contact surface LSEL,S,,,5 CM,_CONTACT,LINE TYPE,3 NSLL,S,1 ESLN,S,0 ESURF ALLSEL ESEL,ALL ESEL,S,TYPE,,2 ESEL,A,TYPE,,3 ESEL,R,REAL,,3 /PSYMB,ESYS,1 /PNUM,TYPE,1 /NUM,1 EPLOT ESEL,ALL ESEL,S,TYPE,,2 ESEL,A,TYPE,,3 ESEL,R,REAL,,3 CMSEL,A,_NODECM CMDEL,_NODECM CMSEL,A,_ELEMCM CMDEL,_ELEMCM CMSEL,S,_KPCM CMDEL,_KPCM CMSEL,S,_LINECM CMDEL,_LINECM CMSEL,S,_AREACM CMDEL,_AREACM CMSEL,S,_VOLUCM CMDEL,_VOLUCM /GRES,cwz,gsav CMDEL,_TARGET CMDEL,_CONTACT /COM, CONTACT PAIR CREATION - END /MREP,EPLOT APLOT FINISH /SOL FLST,2,1,4,ORDE,1 FITEM,2,7 /GO !* SFL,P51X,PRES,10e6, TUNIF,30, FLST,2,1,4,ORDE,1 FITEM,2,1 !* /GO DL,P51X, ,UX, FLST,2,1,4,ORDE,1 FITEM,2,1 !* /GO DL,P51X, ,UY, !* FLST,2,1,4,ORDE,1 FITEM,2,6 !* /GO FLST,2,1,4,ORDE,1 FITEM,2,6 !* /GO DL,P51X, ,UX,3.75 !* ANTYPE,4 !* TRNOPT,FULL LUMPM,0 !* ANTYPE,4 NLGEOM,1 NSUBST,100,1000,100 OUTRES,ERASE OUTRES,ALL,10 AUTOTS,1 KBC,0 TIME,3.75e-3 !* NLGEOM,1 SSTIF,0 NROPT,AUTO, , TRNOPT,FULL EQSLV, , ,0, PRECISION,0 MSAVE,0 TOFFST,273, !* /STATUS,SOLU SOLVE FINISH /POST1 SET,LIST,999 SET,,, ,,, ,11 !* /EFACET,1 PLNSOL, TEMP,, 0,1.0 问题,结果是非线性解,我的结果和书中的差距很大,我的结果中两个滑块都分开了,而且都发生了很大的扭曲,实际不应该这样。还有就是加载的时候,书中是以下面的命令加的 *DIM,par,TABLE,2,1,1,Time,Press, !* *SET,PAR(1,0,1) , 0 *SET,PAR(1,1,1) , 10000000 *SET,PAR(2,0,1) , 10 *SET,PAR(2,1,1) , 10000000 FLST,2,1,4,ORDE,1 FITEM,2,7 /GO !* !* SFL,P51X,PRES, %PAR% 但是我用这个的时候提示missing parameter=pres, 帮帮忙,看哪有问题,谢谢 |
3楼2010-03-04 09:35:15
amerigo6
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2楼2010-03-04 06:41:02












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