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Finite element modelling of the stamping of anisotropic sheet metals

机译:各向异性板材冲压的有限元建模

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Addresses the computational aspects involved in the numerical simulation of sheet stamping processes. Focuses on some numerical aspects of the intrinsic complexity of these problems, the first of which is the necessity to take into account properly membrane and bending effects. Presents a well-adapted shell element The second aspect concerns the description and the implementation of the initial orthotropic plastic behaviour for sheet metal parts, based on a formulation in a rotating frame using the initial microstructure rotation. The stress calculation algorithm is based on a particular implementation of the elastic predictor-plastic corrector method. The last aspect concerns the solution procedures with a particular development concerning the treatment of the blankholder load as a constraint. A set of computational results validated with experiments prove the accuracy of the proposed approach in solving stamping problems.
机译:解决了钣金冲压过程数值模拟中涉及的计算问题。着重于这些问题的内在复杂性的一些数值方面,首先是必须适当考虑膜和弯曲效应。提出了一种适应性强的壳单元。第二个方面涉及钣金零件的初始正交各向异性塑性行为的描述和实现,该行为基于使用初始微观结构旋转的旋转框架中的配方。应力计算算法基于弹性预测器-塑性校正器方法的特定实现。最后一个方面涉及解决程序,特别涉及将空白持有人负荷作为约束条件的处理。通过实验验证的一组计算结果证明了该方法解决冲压问题的准确性。

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