Critical issues in the simulation of hot forming operations

Abstract

The paper deals with the correlations that can be established in the numerical simulation of manufacturing process chains among the process parameters, micro- structure evolution, and properties of the final product. With the focus on process chains applied to bulk and sheet metal parts where deformation is carried out in hot working conditions, the paper illustrates through three application cases the role that the analysis of the microstructure evolution plays in the process chains simulations and, in particular, in enhancing the capabilities of the models that are currently implemented in commercial FE codes for predicting the properties of the final part

Experimental and Numerical Method for the Analysis of Warm Titanium Sheet Stamping of an Automotive Component

“…Other studies aimed at the improvement of its formability by loading the material near to pure shear [17] or using dynamic aging both at cold [18] and warm temperatures [19]. Moreover, hot forming of Ti alloys involves problems related to the material microstructural evolution [20] or to other aspects of the forming process as tool material, blank holding, heating, and regulation, insulation as discussed in [21].…”