| 基于Oyane韧性断裂准则的板料成形极限预测 |
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| 引用本文： | 余心宏,翟妮芝,翟江波.基于Oyane韧性断裂准则的板料成形极限预测[J].材料科学与工艺,2009(5):738-740. |
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| 作者姓名： | 余心宏 翟妮芝 翟江波 |
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| 作者单位： | 西北工业大学材料科学与工程学院; |
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| 摘 要： | 本文基于Oyane韧性断裂准则,结合数值模拟方法,预测板料不同应变状态下的极限应变.准则中的材料参数通过单向拉伸和平面应变拉伸试验确定.在模拟胀形试验获得每一时间步应力、应变值的基础上,应用韧性断裂准则预测板料的成形极限.模拟结果表明用韧性断裂准则和数值模拟相结合的方法能成功获得板料的成形极限图.
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| 关 键 词： | 成形极限图 韧性断裂准则 数值模拟 |
Prediction of the forming limit of sheet metals based on Oyane ductile fracture criterion |
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| YU Xin-hong ZHAI Ni-zhi ZHAI Jiang-bo.Prediction of the forming limit of sheet metals based on Oyane ductile fracture criterion[J].Materials Science and Technology,2009(5):738-740. |
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| Authors: | YU Xin-hong ZHAI Ni-zhi ZHAI Jiang-bo |
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| Affiliation: | YU Xin-hong ZHAI Ni-zhi ZHAI Jiang-bo(Dept.of Materials Science , Engineering,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | Oyane ductile fracture criterion was introduced into numerical simulation to predict the forming limit of sheet metals.Material constants in the criterion were obtained by testing the fracture strains of uniaxial tensile and plan strain stretching.The forming limit was predicted by applying the values of stress and strain of each time step obtained from numerical simulation to the ductile fracture criterion.The results indicate that the combination of ductile fracture criterion and numerical simulation can ... |
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| Keywords: | forming limit diagram ductile fracture criterion numerical simulation |
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