MaSHoS - Material Simulation for Hot Stamping

North Rhine-Westphalia, Germany Piedmont, Italy

Development of a constitutive law and forecast models for a thermo-mechanically coupled material model devoted to the Finite Element Method (FEM) simulation of the hot stamping process of metal boron steel sheets.

The objective of the project was to develop a new material model law being able to take into account the interactions between mechanical properties and phase changes and to drive thermal field as a fully coupled thermo-mechanical material law. Needs addressed were the capability to obtain a realiable, accurate and predictive simulation of stamping process, so giving an unvaluable design tool to properly set-up the design of dies, tools and blank holders, thus allowing the manufacturing operation to fulfill the requirements for tailored ultra-high-strength parts. Through a deep and sound analytical research, the project team has developed a model that has been implemented in a commercial FE solver. The comparison with respect to a standard approach has highlighted a considerable progress in the quality of numerical results, thus permitting to address a metalforming simulation of the hot stamping process with a good confidence.

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