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Study of dynamic explicit analysis in sheet metal forming processes using faster punch velocity and mass scaling scheme

机译:使用更快的冲压速度和质量缩放方案的钣金成形过程中动态显式分析的研究

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摘要

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.
机译:开发了使用动态显式时间积分方案的有限元公式,用于车身面板冲压过程的数值分析。对角质量矩阵采用集总方案,并采用线性化动力学公式,结合了偏斜边界条件和直接试错法,提出了一种接触方案。为了研究冲头速度的影响,将各种值的冲头速度用于数值分析。引入质量缩放方案以进行经济分析。为了研究质量缩放的影响,使用了各种质量缩放。进行计算以分析复杂的车身面板冲压工艺,包括形成油底壳和燃料箱。

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