Hi,
Is it possible to output the B matrix to a result file using input deck cards in CalculiX, similar to how we can output the stiffness matrix using the *FREQUENCY card?
Thanks!!
Anoop
Hi,
Is it possible to output the B matrix to a result file using input deck cards in CalculiX, similar to how we can output the stiffness matrix using the *FREQUENCY card?
Thanks!!
Anoop
Only the stiffness and mass matrcies can be outputted this way. But since CalculiX is open-source, maybe you could find a way to extract it by looking at the source code where it’s computed.
Thank you @Calc_em for the response.
Keep in mind that the B matrix will be based on solid elements, not 1D or 2D simplifications.
Do you mean the composite coupling matrix? I don’t think CCX has that because the composites are solids with stress, rather than shells with force and moment per unit width.
I think that the OP means the strain-displacement matrix commonly used in literature when forming the stiffness matrix.
Can anyone identify the file or subroutine within the CalculiX source code where the B-matrix and the constitutive matrix (material property matrix) are computed?