版主,向您求助了,我模仿到了加摩擦这一步,0.3的确走不动,0.01或0.02则出现如下信息,仿真进行了几步就进行不下去了,请问为何啊,。。。我根据提示列出了多余约束,但不很懂啊。
WARNING: The corrector has not converged after 1 attempts. No. of iterations = 10.
WARNING: ++++++++++++++++++++++++++++++++++++++++++
NOTE: The set of redundant constraints has changed at time = 0.49840.
+++++++++++++++++++++++++++++++++++++++++++++++
WARNING: After 25 iterations, the accelerations and constraint forces have not been resolved to within the specified tolerance of 1.0E-04 .
WARNING: The symbolic refactorization failed. The matrix is structurally singular at time = 0.49840.
WARNING: After 25 iterations, the accelerations and constraint forces have not been resolved to within the specified tolerance of 1.0E-04 .
WARNING: The symbolic refactorization failed. The matrix is structurally singular at time = 0.49840.
--------多余约束-redundant constraint -------
There are 6 redundant constraint equations.
This constraint: unnecessarily removes this DOF:
.presssolid.JOINT_4 (Revolute Joint) Translation of I Marker Along Xg
.presssolid.JOINT_4 (Revolute Joint) Translation of I Marker Along Yg
.presssolid.JOINT_4 (Revolute Joint) Translation of I Marker Along Zg
.presssolid.JOINT_4 (Revolute Joint) Rotation Between Zi & Xj
.presssolid.JOINT_4 (Revolute Joint) Rotation Between Zi & Yj
.presssolid.JOINT_8 (Revolute Joint) Rotation Between Zi & Yj