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Thermal-mechanical Metal-forming Simulations in LS-DYNA Revisited

In a former contribution (LS-DYNA Forum 2004) the properties of coupled thermal-mechanical simulations in LS-DYNA 970.5424 with reference to element free Galerkin (EFG) elements were assessed for a bulk metal forming test case. Some weaknesses were noted. This contribution revisits the problem and tests the progresses in LS-DYNA 971.7600 with regard to adaptivity in this kind of three-dimensional simulation. The results are compared to fully implicit solutions where possible. Additionally plastic heating of 3D-shells in a deep drawing benchmark example is assessed. The paper highlights some of the difficulties encountered and the solutions found. Input decks may be downloaded from www.rudolf-boetticher.de.

application/pdf I-I-1.pdf — 1.6 MB