The Corus-Vegter Material Model technical description

In response to the need from the global automotive industry for a model that can accurately predict the forming behaviour of metals, Corus has developed the unique Corus-Vegter material model. The Corus-Vegter model provides automotive manufacturers a powerful engineering tool to design more confidently when specifying Corus materials, thus reducing product development costs and improving part reliability.

State-of-the-art material model

The Corus-Vegter model accurately describes the yield locus in stress space (see graph below), incorporating a larger number of measurable points than any other yield criterion. Bezier interpolation is performed between points to construct the ellipse(s). The Corus-Vegter model also supports both isotropic hardening and the combined isotropic / kinematic hardening law.

More details on the scientific background of the model are available in a conference paper (See related documents)

Easy to use in PAM-crash

Corus has worked closely with the ESI Group to implement the Corus-Vegter model as an option in PAM-STAMP 2G, the sheet metal forming simulation software package. The model is very straightforward to use without any further calibration, bringing an increased simulation accuracy at only a minor increase in CPU time.