ANSYS螺栓组连接分析,不能求解,显示约束不足? 20
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在做ANSYS机械工程应用精华60例,第48例时,按照命令流输入之后,求解结果不能完成,err显示
There is at least 1 small equation solver pivot term (e.g., at the UX degree of freedom of node 1894). Please check for an insufficiently constrained model
约束
/SOLU
NSEL,S,LOC,Y,0
D,ALL,UY
ALLS
NSEL,S,LOC,X,0
D,ALL,UX
ALLS
NSEL,S,LOC,Z,0
D,ALL,UZ
ALLS
三个例子都是约束不能求解,求大神指点