Analysis Input File Processor exited with an error.

zcr241

*viscoelasticity requires the use of either *elastic, *hyperelastic, *anisotropic hyperelastic or *hyperfoam
15083 elements are missing elastic property reference. The elements have been identified in element set ErrElemMissingElasticPropRef.
The area of 3 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. The elements have been identified in element set ErrElemAreaSmallNegZero.
The elasticity for time domain viscoelasticity must be defined by the *elastic,type=isotropic, *hyperelastic or *anisotropic hyperelastic option
Analysis Input File Processor exited with an error.

帮忙看下这个错误是什么造成的，谢谢！

ppengine

楼主定义了viscoelastic属性？定义viscoelastic的时候必须同时定义elastic, viscoelastic是在elastic的基础上定义的，没有定义elasitc不能计算。