Reply To: Nonlinearity of *MAT_ELASTIC

[Pedram Samadian]

Hi Shahria,

It has nothing to do with the hypoelasticity of the material model. Have you tried other element types? 1-point tetrahedral solid elements (Type = 10) are not recommended for general metal forming applications. I developed a cube tensile model with *MAT_ELASTIC and Element Type 1 and got a linear load-displacement response. Similar results are obtained using common element types of -1 and -2. 

Thanks,

Pedram