在做一个非线性例子，输入一个应力-应变曲线后，为什么结果还是按初始弹性模量计算

tangwenlai

如题，新手，请多指教，就做了一个简单的梁拉伸，结果不是非线性的，还是线性变化
命令流如下：
/title,nolinear
/prep7  
et,1,beam4  
R,1,0.1,1e10,1e10, , , ,
RMORE, , , , , , ,  
MP,EX,1,1180
MP,PRXY,1,,
tb,miso,1,,96   
tbpt,,0.001,1.18
tbpt,,0.003,3.484353521
tbpt,,0.005,5.742688168
tbpt,,0.007,7.950410575
tbpt,,0.009,10.10839787
tbpt,,0.011,12.21751324
tbpt,,0.013,14.27860614
tbpt,,0.015,16.29251254
tbpt,,0.017,18.26005506
tbpt,,0.019,20.18204325
tbpt,,0.021,22.05927375
tbpt,,0.023,23.89253049
tbpt,,0.025,25.68258489
tbpt,,0.027,27.43019605
tbpt,,0.029,29.13611096
tbpt,,0.031,30.80106464
tbpt,,0.033,32.42578038
tbpt,,0.035,34.01096987
tbpt,,0.037,35.55733341
tbpt,,0.039,37.06556007
tbpt,,0.041,38.53632786
tbpt,,0.043,39.97030393
tbpt,,0.045,41.3681447  
tbpt,,0.047,42.73049603
tbpt,,0.049,44.05799341
tbpt,,0.051,45.3512621  
tbpt,,0.053,46.61091728
tbpt,,0.055,47.83756423
tbpt,,0.057,49.03179844
tbpt,,0.059,50.19420581
tbpt,,0.061,51.32536278
tbpt,,0.063,52.42583646
tbpt,,0.065,53.49618479
tbpt,,0.067,54.53695667
tbpt,,0.069,55.54869213
tbpt,,0.071,56.53192243
tbpt,,0.073,57.48717019
tbpt,,0.075,58.41494959
tbpt,,0.077,59.3157664  
tbpt,,0.079,60.19011821
tbpt,,0.081,61.03849449
tbpt,,0.083,61.86137673
tbpt,,0.085,62.65923858
tbpt,,0.087,63.43254597
tbpt,,0.089,64.18175719
tbpt,,0.091 ,64.90732308
tbpt,,0.093 ,65.60968708
tbpt,,0.095,66.28928537
tbpt,,0.097,66.94654699
tbpt,,0.099,67.58189393
tbpt,,0.101,68.19574128
tbpt,,0.103,68.78849729
tbpt,,0.105,69.36056348
tbpt,,0.107,69.91233481
tbpt,,0.109,70.44419968
tbpt,,0.111 ,70.95654011
tbpt,,0.113,71.44973182
tbpt,,0.115 ,  71.92414432  
tbpt,,0.117, 72.38014099
tbpt,,0.119 ,72.81807922
tbpt,,0.121, 73.23831046
tbpt,,0.123,73.64118034
tbpt,,0.125,74.02702875
tbpt,,0.127,74.39618993
tbpt,,0.129,74.74899256
tbpt,,0.131,75.08575985
tbpt,,0.133,75.40680962
tbpt,,0.135,75.71245437
tbpt,,0.137,76.00300141
tbpt,,0.139,76.27875288
tbpt,,0.141,76.54000589
tbpt,,0.143,76.78705256
tbpt,,0.145,77.02018008
tbpt,,0.147,77.23967087
tbpt,,0.149,77.44580255
tbpt,,0.151,77.63884811
tbpt,,0.153,77.81907589
tbpt,,0.155,77.98674975
tbpt,,0.157,78.14212906
tbpt,,0.159,78.28546882
tbpt,,0.161,78.41701971
tbpt,,0.163,78.53702814
tbpt,,0.165,78.64573636
tbpt,,0.167,78.7433825  
tbpt,,0.169,78.83020063
tbpt,,0.171,78.90642082
tbpt,,0.173,78.97226925
tbpt,,0.175,79.0279682  
tbpt,,0.177,79.07373617
tbpt,,0.179,79.1097879  
tbpt,,0.18,79.12423628  
tbpt,,0.181,79.13633446
tbpt,,0.182,79.14610827
tbpt,,0.183,79.1535833  
tbpt,,0.184,79.15878491
tbpt,,0.185,79.16173828
tbplot,miso,1   
N,1,,,,,,,  
N,2,0.142,,,,,,
FLST,2,2,1  
FITEM,2,1   
FITEM,2,2   
E,P51X  
FINISH  
/SOL
ANTYPE,0
NLGEOM,1
NSUBST,100,10000,1  
OUTRES,ERASE
OUTRES,ALL,ALL  
LNSRCH,1
PRED,ON,,ON
TIME,100
NLGEOM,1
NROPT,FULL, ,OFF
STAOPT,DEFA
LUMPM,0
EQSLV, , ,0, ,DELE  
PRECISION,0
MSAVE,0
PCGOPT,0, ,AUTO, , ,AUTO
PIVCHECK,1  
SSTIF   
PSTRES  
TOFFST,0,   
!*  
FLST,2,1,1,ORDE,1   
FITEM,2,1   
!*  
/GO
D,P51X, , , , , ,ALL, , , , ,   
FLST,2,1,1,ORDE,1   
FITEM,2,2   
!*  
/GO
D,P51X, ,0.142/5, , , ,UX, , , , ,  
!*  
OUTPR,ALL,ALL,  
/STATUS,SOLU
SOLVE   
FINISH  

liudapengsnd

材料定义错误，点太多，而且没有定义受拉应力-应变曲线