| 铝合金板材胀形极限的数值模拟研究 |
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| 引用本文： | 陈亮,余心宏,翟妮芝.铝合金板材胀形极限的数值模拟研究[J].锻压装备与制造技术,2009,44(6):94-97. |
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| 作者姓名： | 陈亮 余心宏 翟妮芝 |
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| 作者单位： | 西北工业大学材料科学与工程学院,陕西,西安,710072 |
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| 摘 要： | 应用韧性断裂准则与有限元数值模拟相结合的方法预测了铝合金板料的胀形极限.将有限元模拟获得板材的应力、应变值代入考虑应力三轴度的Oyane韧性断裂准则进行断裂判断,预测出初始断裂点.准则中的材料常数通过单向拉伸和平面拉伸试验确定.计算了三种铝合金板的半球形凸模胀形极限,计算结果表明,应用Oyane韧性断裂准则能有效地预测铝合金板材的胀形极限.
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| 关 键 词： | 机械制造 胀形 铝合金 数值模拟 有限元 |
The Numerical Simulation of Bulging Limit for Aluminum Alloy Sheet |
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| CHEN Liang,YU Xinhong,ZHAI Nizhi.The Numerical Simulation of Bulging Limit for Aluminum Alloy Sheet[J].China Metalforming Equipment & Manufacturing Technology,2009,44(6):94-97. |
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| Authors: | CHEN Liang YU Xinhong ZHAI Nizhi |
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| Affiliation: | CHEN Liang,YU Xinhong,ZHAI Nizhi (School of Materials Sci. & Eng.,Northwestern Polytechnical University,Xi'an710072,Shanxi China) |
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| Abstract: | The ductile fracture criterion has been leaded into the finite element simulation to predict the bulging limit of aluminum alloy sheet. The stress and strain values which are gained by finite element simulation have been introduced into Oyane ductile fracture criterion which considers stress triaxiality to determine the fracture and predict the initial fracture point. The material constants of the criteria have been determined by simple tension and flat tensile test. The hemispherical punch bulging limits o... |
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| Keywords: | Aluminum alloy Ductile fracture criterion Finite element simulation Bulging limit |
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