I’m new to calculix and I must say that I made a huge research of Open Source software for FEM. I’m familiar with Ansys and LS-Dyna and got a bit frustrated when I realised that the ‘Beam’ element (B32) is actually expanded to a hexaedron.
I’m simulating pretty long beams (such as risers or cables) with small cross section areas.
The problem arises when I create an explicit integration simulation. The expansion for a solid element creates quite small edges resulting in ridiculously small integration time steps. I may use Implicit time integration, but the computational cost may differ significantly.
Time steps for a Beam element shouldn’t be function of cross section area, as happening here. Does anyone implemented a true Beam element?
Thank you so much in advance!