在做一个零部件静力学分析打开“Large Deflection”出现一下两个警告和一个错误，求行家帮忙解决一下，谢谢。
One or more bodies may be underconstrained and experiencing rigid body motion. Weak springs have been added to attain a solution. Refer to Troubleshooting in the Help System for more details.
One or more MPC contact regions or remote boundary conditions may have conflicts with other applied boundary conditions or other contact regions. Tip: You can graphically display FE Connections from the Solution Information Object. Refer to Troubleshooting in the Help System for more details.
An internal solution magnitude limit was exceeded. Please check your Environment for inappropriate load values or insufficient supports. Also check that your mesh has more than 1 element in at least 2 directions if solid brick elements are present. Please see the Troubleshooting section of the Help System for more information.

刚性位移去掉。

谢谢提供帮助，这是加了载荷约束的零部件下端装配角接触球轴承，插入机架上，上端装配角接触球轴承插入圆形盘，整个部件随圆盘高速转动，打开大变形计算就出现了以上的错误与警告，请高手指点一下。

第一个和第三个都是计算不收敛，第二个建议把MPC公式改为增强拉格朗日公式，打开迭代计算
计算不收敛，第一在analysis setting下面缩小时间步长，第二在关键接触部位减小接触刚度normal stiffness一般默认是1，根据材料刚度改为为0.1到0.01之间，第三在analysis setting非线性控制选项里打开稳态，提高位移容限值和载荷容限值，第四，增加载荷步和边界条件，第五，把关键位置和小边角位置的网格划分细一些，设定接触面网格一致

请问，在workbench16.0里面，怎么算橡胶固有频率啊，我设了材料mooney rivlin，但是模态分析不了？另外16.0里面有个modal(abaqus)模块，但这里面也求不了，是不是workbench就算不了非线性的模态啊？？？？急问，急问