Solver pivot warnings or errors have been encountered during the solution.  This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.  Check results carefully.

在做結(jié)構(gòu)靜力學(xué)分析時(shí)一直遇到這個(gè)問題····求問大神如何