ansys热分析问题出现如下问题应该如何解决？

A large negative pivot value ( -8.419662714E-08 ) has been encountered in the global assembled matrix. This may be caused by a bad temperature-dependent material property used in the model. 问题描述：在ansys中，壳与实体MPC bonded 连接的装配体热分析时出现的上面的问题，网上评论说与单元形状有关，请问如何解决，谢谢