abaqus 分析出错，错误提示如下，如何解决？

  作业管理器中的监控显示错误如下：Plastic requires the use of *elastic,*hyperelastic or *hyperfoam

7452 elements are missing elastic property reference.The elements have been identified in element set ErrElemMissingElasticPropRef.

Analysis Input File Processor exited with an error.

查看结果变形时：

There is no valid step data available on the database.if the analysis is running,the database must be closed and reopened once the results have been initialized.The requested operation has been cancelled.

我做的是接触分析