有没有办法能够考虑点线约束的摩擦力

ayfuheng

各位大神，如题，小弟在一个简单模型中只添加了一个点线约束，并且没有添加任何的驱动或者其它约束什么的，仅仅一个点线约束，求解计算还没开始就报错了。报错提示如下：
[backcolor=rgba(255, 255, 255, 0.8)]Error detected in model analysis, matrix factorization procedure.Matrix has rank deficiency after LU factorization.
[backcolor=rgba(255, 255, 255, 0.8)]One possible cause of this problem is over constraining the model resulting from the locking up of joints by the friction element.
[backcolor=rgba(255, 255, 255, 0.8)]When the stiction friction event is reached the solver adds a constraint to lock out the motion of the joint. [backcolor=rgba(255, 255, 255, 0.8)]If friction has been added to more than one joint then depending on the topology of the model it is possible that when one joint locks up the other joints will lock up as well leading to a redundant set of constraints. [backcolor=rgba(255, 255, 255, 0.8)]If this is true one possible solution is to allow only one of the friction elements to go into lock up by giving it a nonzero stiction coefficient while in the other joints supply a nonzero dynamic coefficient of friction and a zero static coefficient of friciton.
[backcolor=rgba(255, 255, 255, 0.8)]但是模型中根本就没有考虑摩擦，或者说没有定义摩擦。这是什么情况？

skystreak

这个的报错问题可能不是由于摩擦引起的，点线副你可以看看曾春的帖子
http://forum.simwe.com/thread-1126455-1-1.html