SOLID185 is used for 3-D modeling of solid structures. It is defined by eight nodes having three degrees of freedom at each node: translations in the nodal x, y, and z directions. The element has plasticity, hyperelasticity, stress stiffening, creep, large deflection, and large strain capabilities. It also has mixed formulation capability for simulating deformations of nearly incompressible elastoplastic materials, and fully incompressible hyperelastic materials.

Thank you for answering. Could you possibly suggest me some articles/studies in order to better understand equations which take these effects into account?

Because I am working on a 3D FEM model, whose task is to find frequencies. Now I found reasonably good results, but my model is not able to take some effects into account (because some frequencies are not detected). Therefore, I want to improve my model, but for now I was not able to find the theoretical improvements that I need.

Dear Davide Masi ,

You can find the copy/past already answered in Ansys_Mechanical_APDL_Element_Reference.pdf (see the attachment page 821) if you want to see more details for this element. This document just shows how this element works and what options are available.

However, chapter 2 of Ansys_Mechanical_APDL_Theory_Reference.pdf (see the attachment) shows all the formulation behind the structural elements that are integrated in the solver.

Thanks,