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发表于 2012-6-30 10:44
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本帖最后由 wdhd 于 2016-5-18 09:04 编辑
住址模型如下图:
所有链节间加的是旋转辐,链轮和地面问加的也是旋转辐。
求解错误提示:
ERROR: At time 1.758085069E+00 the integrator is unable to start/restart. Possible Causes:
(1) The accuracy required for the numerical solution can not be attained.
Relax (increase) the value of the acceptable integration ERROR.
(2) Incompatible redundant constraints, a lock up, or a bifurcation situation. The latter two indicate a mechanism design problem.
(3) The system includes a zero (or relatively small) mass on a part with an unconstrained translational degree of freedom.
Make sure you have mass on all parts with translational degrees of freedom.
(4) The system includes a zero (or relatively small) inertia on a part with an unconstrained rotational degree of freedom.Make sure you have inertias on all parts with rotational degrees of freedom.
(5) An Adams element has a function expression that equals exactly itself.
For example,
SFORCE/id1,I=id2,J=id3,ROT,FUNC=SFORCE(id1,jflag,comp,rm),and
DIFF/id4,IMPLICIT,IC=0,FUNC=DIF1(id4).
Similarly,
VARIABLE/id5, FUNC=VARVAL(id5)*TIME
equals itself at 1 second. Avoid setting an Adams element equal to itself.
ERROR: Simulation failure detected.
ERROR: Simulation failure detected.
我检查了,质量和惯量都是对的,没检查出哪个质量有问题
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