When using UniaxialStress stress state for finite strain, we have 8 free components, but these involve rotation, and in some cases a singular matrix has been observed. Therefore, it could make sense to reduce the unknowns further, preventing rotation around the x-axis. Alternatively augment the stiffness to prevent rotation as a modified Newton.
When using
UniaxialStressstress state for finite strain, we have 8 free components, but these involve rotation, and in some cases a singular matrix has been observed. Therefore, it could make sense to reduce the unknowns further, preventing rotation around the x-axis. Alternatively augment the stiffness to prevent rotation as a modified Newton.