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[求助]
ansys/ls-dyna拉伸颈缩模拟求助
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最近在用ansys/ls-dyna做焊接接头拉伸模拟，在右端施加恒定位移载荷，结果接头几乎只是向右端平移，没大变形，更别提颈缩。 命令流如下： /title,lashen /prep7 et,1,plane162 mp,ex,1,207e+11 mp,nuxy,1,0.27 mp,dens,1,7800 tb,biso,1,,,, tbdat,1,4e8 tbdat,2,1.0e10 edmp,hgls,1,5,0.1,1.5,0.06 et,2,plane162 mp,ex,2,210e+11 mp,nuxy,2,0.3 mp,dens,2,7850 tb,biso,2,,,, tbdat,1,2.3e8 tbdat,2,1.5e10 edmp,hgls,1,5,0.1,1.5,0.06 RECT,-150,150,0+391.8,14.7+391.8 k,5,1.056546,391.8,0 k,6,-1.056546,391.8,0 k,7,6.854722,14.7+391.8,0 k,8,-6.854722,14.7+391.8,0 k,9,0,16+391.8,0 larc,7,8,9 a,5,7,8,6 AGEN,2,2 ASBA,1,2 AGLUE, ALL k,14,1.056546+0.75,391.8,0 k,15,6.854722+0.75,14.7+391.8,0 l,14,15 asbl,1,6 k,16,1.056546+0.75+1,391.8,0 k,17,6.854722+0.75+1,14.7+391.8,0 l,16,17 asbl,4,1 k,18,1.056546+0.75+1+0.75,391.8,0 k,19,6.854722+0.75+1+0.75,14.7+391.8,0 l,18,19 asbl,1,7 k,20,-1.056546-0.75,391.8,0 k,21,-6.854722-0.75,14.7+391.8,0 l,20,21 asbl,2,3 k,22,-1.056546-0.75-1,391.8,0 k,23,-6.854722-0.75-1,14.7+391.8,0 l,22,23 asbl,1,5 k,24,-1.056546-0.75-1-0.75,391.8,0 k,25,-6.854722-0.75-1-0.75,14.7+391.8,0 l,24,25 asbl,9,16 aglue,all k,26,15,391.8,0 k,27,15,391.8+14.7,0 l,26,27 asbl,7,26 k,28,-15,391.8,0 k,29,-15,391.8+14.7,0 l,28,29 asbl,1,20 aglue,all asel,s,area,,4 aatt,2,,2 esize,1 mshape,0,2D mshkey,0 amesh,4 asel,s,area,,5 aatt,2,,2 esize,1 mshape,0,2D mshkey,0 amesh,5 asel,s,area,,6 aatt,2,,2 esize,1 mshape,0,2D mshkey,0 amesh,6 asel,s,area,,8 aatt,2,,2 esize,1 mshape,0,2D mshkey,0 amesh,8 asel,s,area,,2 aatt,2,,2 esize,1 mshape,0,2D mshkey,0 amesh,2 asel,s,area,,10 aatt,2,,2 esize,1 mshape,0,2D mshkey,0 amesh,10 asel,s,area,,9 aatt,1,,1 esize,2 mshape,0,2D mshkey,0 amesh,9 asel,s,area,,7 aatt,1,,1 esize,2 mshape,0,2D mshkey,0 amesh,7 asel,s,area,,3 aatt,1,,1 esize,1 mshape,0,2D mshkey,0 amesh,3 asel,s,area,,12 aatt,1,1,1 esize,1 mshape,0,2D mshkey,0 amesh,12 asel,s,area,,11 aatt,1,1,1 esize,1 mshape,0,2D mshkey,0 amesh,11 allsle,all lsel,s,,,4 nsll,s,1 d,all,ux,0 lsel,s,,,12,14,1 nsll,s,1 d,all,uy,0 lsel,s,,,8 nsll,s,1 d,all,uy,0 lsel,s,,,17 nsll,s,1 d,all,uy,0 lsel,s,,,21 nsll,s,1 d,all,uy,0 lsel,s,,,27 nsll,s,1 d,all,uy,0 lsel,s,,,24 nsll,s,1 d,all,uy,0 lsel,s,,,29 nsll,s,1 d,all,uy,0 lsel,s,,,32 nsll,s,1 d,all,uy,0 lsel,s,,,35 nsll,s,1 d,all,uy,0 lsel,s,,,2 nsll,s,1 d,all,uy,0 lsel,s,,,2 nsll,s,1 cm,node1,node *dim,time,array,2,1,1 time(2,1,1)=100 *dim,compress,array,2,1,1 compress(2,1,1)=30 edload,add,ux,,node1,time,compress allsel,all finish /solu edopt,add,blank,both time,300 edrst,100 edhtime,100 outres,all,all solve finish 应该要设定断裂准则，应该怎么设定呢？ 跪求指导！！ 变形截图如下  _BC`B1W7EN%_L)WNYP2V6)S.png  MSRV~Y((GJ}[Y2HZ(7_VC(M.png@wuming524 |
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