Abstract
A finite element formulation using dynamic explicit time integration scheme is developed for numerical analysis of autobody panel stamping processes. The lumping scheme is employed for the diagonal mass matrix and linearizing dynamic formulation. A contact scheme is developed by combining the skew boundary condition and direct trial and error method. To investigate the effects of punch velocity, various values of punch velocity are used for numerical analysis. The mass scaling scheme is introduced for economic analysis. To investigate the effects of mass scaling, various mass scalings are used. Computations are performed for analysis of complicated autobody panel stamping processes including the formation of an oilpan and a fuel tank.
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Jung, D.W. Study of dynamic explicit analysis in sheet metal forming processes using faster punch velocity and mass scaling scheme. J. of Materi Eng and Perform 7, 479–490 (1998). https://doi.org/10.1361/105994998770347620
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DOI: https://doi.org/10.1361/105994998770347620