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Elastic-Plastic Flange Wrinkling of Circular Plates in Deep Drawing Process

机译：拉深过程中圆板的弹塑性法兰起皱

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This paper deals with two-dimensional plane stress wrinkling model of elastic/plastic annular plate. Based on energy method and nonlinearity of strain-displacement law, a bifurcation functional in polar coordinate is derived analytically. This technique leads to the critical conditions for the onset of the elastic/plastic wrinkling of the flange during the deep-drawing process. Tresca yield criterion along with deformation theory of plasticity are utilized and the material of the plate is assumed to behave perfectly plastic. Moreover, the influence of the blankholder upon wrinkling and on the number of the generated waves is quantitatively predicted by the suggested scheme. The main advantage of the proposed solution is its better agreement with the experimental and analytical results found by the other resarchers.
机译：本文研究了弹性/塑料环形板的二维平面应力起皱模型。基于能量法和应变-位移定律的非线性，解析推导了极坐标下的分叉函数。这种技术导致了在深冲过程中出现凸缘的弹性/塑性起皱的关键条件。利用Tresca屈服准则和可塑性变形理论，并假定板的材料具有完美的塑性。此外，通过所提出的方案定量地预测了坯料保持器对起皱的影响以及对所产生的波的数量的影响。提出的解决方案的主要优点是它与其他研究者发现的实验和分析结果更好地吻合。

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