A new finite element model based on U-bending benchmark of NUMISHEET '93 has been proposed to predict springback with contact evolution between the sheet and dies.

基于NUMISHEET93的U形弯曲标准考题，考虑板材与模具间的接触演变过程，建立了一个新的有限元模型来预测回弹。

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A finite element model based U-bending benchmark of NUMISHEET '93 has been used to predict springback with contact evolution between the sheet and dies.

基于NUMISHEET93的U形弯曲标准考题，考虑板材与模具间的接触演变过程，建立了一个有限元模型来预测回弹。

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The influence of process parameters on springback of sheet metal is studied comprehensively by using U-shape sheet metal as the test object.

以U形板料为研究对象，综合考察评价了多个工艺参数对U形板料冲压回弹量的影响。

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