| 6063铝合金压缩实验摩擦修正及高温流动应力模型 |
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| 引用本文： | 陈志英,许树勤,董湘怀,阮雪榆.6063铝合金压缩实验摩擦修正及高温流动应力模型[J].材料科学与工艺,2008,16(6):847-851. |
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| 作者姓名： | 陈志英 许树勤 董湘怀 阮雪榆 |
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| 作者单位： | [1]上海交通大学国家模具工程中心,上海200030 [2]太原理工大学材料科学与工程学院,太原030024 |
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| 基金项目： | 山西省留学回国人员科研资助项目 |
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| 摘 要： | 本构关系是影响模拟结果准确性的重要因素之一,本文采用一种数值模拟和压缩实验相结合的方法鼓度法,即由鼓度θ估算摩擦因子,然后通过主应力法公式去除压缩实验中摩擦因素的影响,得到6063铝合金的真实应力-应变曲线,并回归出本构方程.
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| 关 键 词： | 本构方程 鼓度 压缩实验 数学模型 |
Friction modification for compression tests and constitutive relationship for 6063 aluminum alloy at elevated temperature |
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| CHEN Zhi-ying,XU Shu-qin,DONG Xiang-huai,RUAN Xue-yu.Friction modification for compression tests and constitutive relationship for 6063 aluminum alloy at elevated temperature[J].Materials Science and Technology,2008,16(6):847-851. |
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| Authors: | CHEN Zhi-ying XU Shu-qin DONG Xiang-huai RUAN Xue-yu |
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| Affiliation: | 1(National Die and Mold CAD Engineering Research Center,Shanghai Jiao Tong University,Shanghai200030,China;College of Material Science and Engineering,Taiyuan University of Technology,Taiyuan030024,China) |
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| Abstract: | The constitutive relationship is one of the most important factors affecting the precision of FEM simulation.In this paper,a bulge method which combines compression experiments and FEM simulation is proposed.The friction factor is evaluated by the bulgeθ,then the contribution caused by the friction on the interface between the die and the specimen is eliminated.Then true stress-strain curves are obtained and corresponding constitutive equation is obtained by regression. |
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| Keywords: | constitutive relationship bulge compression experiment mathematical model |
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