新手上路,做了一个各向异性材料的模型,模型分为六层,一层为各向异性,其余为同性。出现错误:Anisotropic material properties without a local orientation system have been defined for 45 elements. Anisotripic material properties must be defined in a local orientation system. The elements are identified in element set ErrElemAnisotropicMaterial.
请问高手,这是哪边的错误呢?
求救 求救