CAE: Material property settings in the plastic domain

Approximate the plasticity domain with a single straight line! We will use a method called "two-line approximation" to reduce computation time.

Many resins have properties in both the elastic region and the plastic region. In the elastic region, the strain returns to zero when the stress is removed, resulting in linear behavior. However, in the plastic region, the strain does not return to zero when the stress is removed, leading to nonlinear behavior. To perform calculations in the nonlinear region during structural analysis, it is necessary to input material properties. However, inputting properties for the nonlinear region requires entering strain values for each stress point, which is quite cumbersome. Additionally, the computation time becomes longer. To simplify the input of material properties, we use a method called "two-line approximation" to shorten the computation time. This approach replaces the properties of the resin from the yield point to the fracture point with a single straight line (tangent modulus). This method is particularly suitable for quickly checking design values in models with a large number of elements and significant computational scale. *For more details, please refer to the related links or feel free to contact us.*

Structural Analysis