Hello,
I have a question regarding the Analyze ThII component.
From the documentation, I understand that the component performs a second-order analysis by iteratively updating the stiffness matrix according to the deformed geometry, which indicates that geometric nonlinearity is considered.
However, I could not find a clear statement regarding the consideration of physical (material) nonlinearity. Specifically, I would like to know whether the analysis also accounts for the nonlinear constitutive behavior of the material (e.g., cracking, stiffness degradation, yielding, or nonlinear stress–strain relationships), or whether the material is assumed to remain linearly elastic throughout the analysis.
In other words, does the Analyze ThII component consider:
- Geometric nonlinearity only (updated geometry / P–Δ and P–δ effects with linear-elastic material); or
- Both geometric and physical (material) nonlinearity?
If physical nonlinearity is not included, is there any recommended workflow within Karamba3D to incorporate both geometric and material nonlinear effects?
Thank you very much for your clarification.