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[求助]
ansys模拟桩土的2d拉拔塑性区问题
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采用接触分析，但为何塑性区集中一部分，而不是一个贯通的区域。请大神给我点思路建议~~很急很关键，谢谢了 1006.png |
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2楼2016-01-10 07:27:44
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您能给我看一下命令吗，我想得到一个贯通的塑性区，初学阶段才疏学浅，始终办不到，拜托了 finish /clear /PREP7 ! KeyPoints K,2,0.03,0 K,259,3.70E-02,-1.9E-02 K,260,3.68E-02,-1.73736000000001E-02 K,261,3.66999999998281E-02,-1.64644499999999E-02 K,262,3.66999999998281E-02,-1.56550500000001E-02 K,263,3.68E-02,-.0147573 K,264,.0367,-1.17477000000001E-02 K,265,.0366,-1.05079499999999E-02 K,266,.0367,-8.38755000000015E-03 K,267,3.7E-02,-7.24755000000005E-03 K,268,3.73E-02,-.0056259 K,269,3.79E-02,-2.73029999999994E-03 K,270,3.82E-02,-8.32200000000057E-04 K,272,.1,0 K,273,.1,-1.9E-02 K,274,0.03,-1.9E-02 K,282,3.82E-02,0 K,159,3.70E-02,-1.9E-02 K,160,3.68E-02,-1.73736000000001E-02 K,161,3.66999999998281E-02,-1.64644499999999E-02 K,162,3.66999999998281E-02,-1.56550500000001E-02 K,163,3.68E-02,-.0147573 K,164,.0367,-1.17477000000001E-02 K,165,.0366,-1.05079499999999E-02 K,166,.0367,-8.38755000000015E-03 K,167,3.7E-02,-7.24755000000005E-03 K,168,3.73E-02,-.0056259 K,169,3.79E-02,-2.73029999999994E-03 K,170,3.82E-02,-8.32200000000057E-04 K,182,3.82E-02,0 LSTR, 260, 259 LSTR, 261, 260 LSTR, 262, 261 LSTR, 263, 262 LSTR, 264, 263 LSTR, 265, 264 LSTR, 266, 265 LSTR, 267, 266 LSTR, 268, 267 LSTR, 269, 268 LSTR, 270, 269 LSTR, 282, 270 LSTR, 282,2 LSTR, 274,2 LSTR, 273,272 LSTR, 274,259 LSTR, 160, 159 LSTR, 161, 160 LSTR, 162, 161 LSTR, 163, 162 LSTR, 164, 163 LSTR, 165, 164 LSTR, 166, 165 LSTR, 167, 166 LSTR, 168, 167 LSTR, 169, 168 LSTR, 170, 169 LSTR, 182, 170 LSTR, 182, 272 LSTR, 273,159 allsel,all,all LSEL,S,LINE,,1,12 LCOMB,ALL ALLSEL,ALL LSEL,S,LINE,,17,28 LCOMB,ALL ALLSEL,ALL numcmp,all ALLSEL,ALL k,9,3.70E-02,-0.6000000 k,10,3.82E-02,0.300000 k,11,0.6,-0.6000000 k,12,0.6,0.300000 LSTR, 9,2 LSTR, 10,3 LSTR, 10,12 LSTR, 12,11 LSTR, 9,11 allsel,all,all a,2,3,5,6 a,7,1,8,4 lsel,S,line,,7,13 lsel,a,line,,4 cm,YUTI,line al,YUTI !土体参数 E_1=10E6 U_1=0.35 DENS_1=1900 C_1=30E3 FI_1=12 DFI_1=6 MP,EX,1,E_1 MP,PRXY,1,U_1 MP,DENS,1,DENS_1 TB,DP,1 TBDATA,1,C_1,FI_1,DFI_1 MP,MU,1,0.2 !锚固体参数 E_2=30E10 U_2=0.2 DENS_2=2500 MP,EX,2,E_2 MP,PRXY,2,U_2 MP,DENS,2,DENS_2 ET,1,82 KEYOPT,1,3,1 ET,3,targe169 ET,4,conta172 KEYOPT,4,3,1 KEYOPT,4,10,2 KEYOPT,4,8,2 keyopt,4,12,2 !界面层接触面实常数 R,6 lsel,s,line,,1,6,5 LESIZE,ALL,,,100 lsel,s,line,,2,5 LESIZE,ALL,,,15 lsel,s,line,,7 LESIZE,ALL,,,60,2 lsel,s,line,,8 LESIZE,ALL,,,60,0.5 lsel,s,line,,9 LESIZE,ALL,,,100,0.05 lsel,s,line,,10 LESIZE,ALL,,,80,0.05 lsel,s,line,,11,13 LESIZE,ALL,,,50 ASEL,S,AREA,,1 AATT,1,,1 mshkey,0 mshape,1,2D AMESH,ALL ASEL,S,AREA,,2 AATT,2,,1 mshkey,0 mshape,1,2D AMESH,ALL ASEL,S,AREA,,3 AATT,1,,1 mshkey,0 mshape,1,2D AMESH,ALL allsel,all,all !创建目标面（锚固体） lsel,s,line,,1 nsll,s,1 esln,s,0 type,3 real,6 mat,2 esurf allsel,all,all !创建接触面（界面层） lsel,s,line,,6 nsll,s,1 esln,s,0 type,4 real,6 mat,1 esurf allsel,all,all LSEL,S,LINE,,11,13,2 NSLL,S D,ALL,Uy LSEL,S,LINE,,12 NSLL,S D,ALL,Ux LSEL,s,,,2 NSLL,S SF,all,PRES,-4e4 LSEL,s,,,3 NSLL,S SF,all,PRES,1e4 allsel,all,all /solu antype,static nlgeom,on autots,on time,1 NSUBST,200 OUTRES,ALL,ALL NROPT,full,,off NROPT,unsym,,off solve allsel,all,all ASEL,S,AREA,,1,2 ESLA,S |
3楼2016-01-10 09:08:49
顶一下 |
4楼2016-01-11 09:21:06
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请问下，你可以帮我解决下这个问题吗 1.一般工程勘察里面给出的土的压缩模量，压缩模量与变形模量之间有一个转换公式，而弹性模量的取值，往往说法不一，在网上找的资料有的说弹性模量取的是压缩模量的2-5倍，但是又不确定。 2. 在（ANSYS用于模拟上部结构与地基基础作用中土的弹性模量的影响）这个文章中，提到说在土与基础共同作用分析中，弹性模量就是变形模量； 在这个资料里http://wenku.baidu.com/view/1b2bd3ea6294dd88d0d26bfc.html 也说到，"在很多数值模拟软件中，除非特别说明，一般说的弹性模量均指变形模量，即土体在无侧限的条件下的弹性模量。 " 请问下，到底ansys中输入的是土的变形模量还是弹性模量呢？？ |
5楼2016-01-11 19:17:10
6楼2016-01-11 19:54:28
7楼2016-01-12 00:21:15
8楼2016-01-12 13:22:09