In a stamping bending analysis, if you set the yield stress vs plastic strain values below in a nonlinear environment for aluminum 1050, the mesh will explode during the calculation.
Stress(MPa) | Strain(/)
30 | 0
60 | 0.01
90 | 0.02
100 | 0.05
110 | 0.1
120 | 0.2
Type: Liner
Contact stiffness coefficient (K): 15000 N/mm³
σ infinity: 1 MPa
Co: Default (0.001)
Note: K should be set to about 5000N/mm³, but with this setting, the punch and die overlap with the material too much and the analysis could not be performed correctly.