|About this Abstract
||NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||A Thermal Extension of the GISSMO Fracture Framework for Hot-stamping Operations
||Alan A. Camberg, Tobias Erhart, Thomas Tröster
|On-Site Speaker (Planned)
||Alan A. Camberg
Hot-stamping processes are becoming increasingly important in the manufacture of sheet metal parts for body-in-white applications. However, the non-isothermal nature of these processes leads to difficulties in evaluating the forming limits, since established methods such as forming limit curves (FLC) only allow the assessment of critical forming strains for one temperature. For this reason, a temperature-dependent extension of the well-established GISSMO fracture framework is developed by the authors to predict forming failures in non-isothermal processes. In this paper, the general approach to combining several isothermal FLCs within the temperature-extended GISSMO model into a temperature-dependent forming limit surface is investigated. The general capabilities of the model are tested in a coupled thermo-mechanical FEA with experimental data from Abedrabbo et al. (2007).
||Definite: At-meeting proceedings