请教大家一个问题: 我的模型中目标面有80个(CM_mubiaomian1里面有80个小面),它们共用1个接触面(CM_jiechumian1),其中,CM_mubiaomian1与CM_jiechumian1是为了方便选取建立的组件,我建接触时,目标面中80个小面与1个接触面分别建立了80个接触对,但是计算时,提示有很多小主元方程出现,我检查了约束情况,确定没问题,因而只能是接触出了问题,我建立接触的命令流如下:
!!!!!!!!接触单元属性定义!!!!!!!!!!!!!!!!!!!!!!!!!!
ET,5,170
ET,6,173
KEYOPT,6,12,2
KEYOPT,6,5,3
KEYOPT,6,9,0
MP,MU,8,0.2
*DO,I,1,80,1
R,I,,,1,1,,,
RMORE,,,1e20,0.0,1,
RMORE,0.0,0,1.0,0,0,1
RMORE,,,2.0,,,
*ENDDO
allsel
!!!!!!!!!!建立刚性接触面1!!!!!!!!!!!!!!!!!!!!!!!!!!!
cmsel,s,CM_mubiaomian1
*do,I,1,80,1
ASEL,R,AREA,,I
aplot
cm,target,Area
TYPE,5
mat,8
REAL,I
NSLA,S,1
ESURF,ALL
esel,s,type,,5
eplot
/psymb,esys,1
allsel
!!建立柔性接触面
cmsel,s,CM_jiechumian1
aplot
cm,contact,Area
TYPE,6
mat,8
REAL,I
NSLA,S,1
ESURF,ALL
esel,s,type,,6
eplot
/psymb,esys,1
allsel
*ENDDO
allsel
计算不收敛,并且还提示有许多节点位移过大,出现刚体位移,这是怎么回事?麻烦大家给指点一下,谢谢! |