hanyongdian 发表于 2006-12-17 21:59

求助:蠕变问题

我的模型是关于封装件的焊点的热循环情况下的蠕变。我计算时设置的参数都是关于蠕变的 怎么后处理时,仅仅能得到其它的应力应变情况,而想要的蠕变却不能得到,就是一点和蠕变有关的量整个模型就变成红色。最后在分析节点的蠕变应变与时间的关系时,得到的蠕变都是0。各位高手能指点一下吗 小弟万分感谢!
命令流如下:/PREP7
ET,1,SOLID45
ET,2,SOLID185   
MP,EX,1,3.5E11
MP,PRXY,1,0.3   
MP,ALPX,1,7.75E-6   
MP,KXX,1,10
MP,EX,2,7E10
MP,PRXY,2,0.3   
MP,ALPX,2,17E-6
MP,KXX,2,390
MPTEMP,1,-40,-30,-20,-10,0,10   
MPTEMP,7,20,30,40,50,60,70
MPTEMP,13,80,90,100,110,125
MP,EX,3,5.49E10,-6.714E7,-0
MP,EX,3,5.49E10,-6.714E7,-0.058E6   
MP,PRXY,3,0.4   
MP,ALPX,3,19.8E-6   
MP,KXX,3,73
TB,CREEP,3,,,8
TBDATA,1,277984,0.02447E-6,6.41,0.56 第八种蠕变模型
block,0,12,0,4.8,0,1
WPOFF,0.4,0.4,1
BLOCK,0,0.8,0,0.8,0,0.01
SAVE
VGEN,3,2,,,,1.6,
WPOFF,0,0,0.01
BLOCK,0,0.8,0,0.8,0,0.095   
VGEN,3,5,,,,1.6,
WPOFF,0,0,0.095
BLOCK,0,0.8,0,0.8,0,0.01
VGEN,3,8,,,,1.6,
WPOFF,-10.8,-0.4,0
block,0,12,0,4.8,0,1
SAVE
wpoff,0,0,0.1   
VSBW,11
VGLUE,12,13
WPOFF,0,0,-0.315
VSBW,1
VGLUE,11,14
WPAVE,0,0,0
WPROTA,0,0,-90
VSBW,12
VSBW,13
VGLUE,12,16
VGLUE,1,15
SAVE
WPOFF,0,0,-1.6
VSBW,11
VSBW,14
VGLUE,13,17
VGLUE,11,18
SAVE
WPOFF,0,0,-1
VSBW,17
VSBW,11
VGLUE,14,19
VGLUE,17,20
SAVE
WPOFF,0,0,3.6   
VSBW,1
VSBW,12
VGLUE,11,21
VGLUE,1,22
WPROTA,0,0,90   
WPAVE,0,0,0
VSEL,S,LOC,Z,0,1
VATT,1,,1,
VSEL,S,LOC,Z,1,1.01
VATT,2,,1,
VSEL,S,LOC,Z,1.01,1.1005
VATT,3,,2,
VSEL,S,LOC,Z,1.1005,1.1105
VATT,2,,1,
VSEL,S,LOC,Z,1.1105,2.1105
VATT,1,,1,
VSEL,S,LOC,Z,0,1
vsel,r,loc,x,2.6,12
ESIZE,0.8   
VSWEEP,ALL
VSEL,S,LOC,Z,0,1
vsel,r,loc,x,1.6,2.6
ESIZE,0.5   
VSWEEP,ALL
VSEL,S,LOC,Z,0,0.9
vsel,r,loc,x,0,1.6
ESIZE,0.3   
VSWEEP,ALL
VSEL,S,LOC,Z,0.9,1.0
vsel,r,loc,x,0,1.6
ESIZE,0.15
VSWEEP,ALL
VSEL,S,LOC,Z,1.0,1.1105
ESIZE,0.05
VSWEEP,ALL
VSEL,S,LOC,Z,1.1105,1.2105
vsel,r,loc,x,0,1.6
ESIZE,0.15
VSWEEP,ALL
VSEL,S,LOC,Z,2.1105,1.2105
vsel,r,loc,x,0,1.6
ESIZE,0.3   
VSWEEP,ALL
VSEL,S,LOC,Z,2.1105,1.1105
vsel,r,loc,x,0,-1   
ESIZE,0.5   
VSWEEP,ALL
VSEL,S,LOC,Z,2.1105,1.1105
vsel,r,loc,x,-10.4,-1   
ESIZE,0.8
VSWEEP,ALL
da,1,UZ,0   
DA,120,UZ,0
DA,2,UZ,0   
DA,110,UZ,0
FINISH
/SOL
ANTYPE,STATIC   
NEQIT,25
OUTRES,ALL,2
NLGEOM,0N   
TUNIF,125   
TREF,125
SOLCONTROL,ON,0,
CNVTOL,F,,0.01,2,1.0
LNSRCH,1
NSEL,ALL
ESEL,ALL
DELTIME,6   
TIME,360
BFE,ALL,TEMP,125
KBC,1   
SOLVE
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