| 一种基于反求参数的拉延筋解析模型 |
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| 引用本文： | 吴磊,韩旭,李光耀,刘桂荣.一种基于反求参数的拉延筋解析模型[J].中国机械工程,2006,17(2):208-211. |
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| 作者姓名： | 吴磊 韩旭 李光耀 刘桂荣 |
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| 作者单位： | 湖南大学现代车身技术教育部重点实验室,长沙,410082 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 建立了考虑板料中性层偏移、包辛格效应等因素的拉延筋解析模型。材料本构关系采用弹塑性幂次强化，利用平面应变假设来求解拉延筋阻力。验证了此模型的有效性后，采用改进的小种群遗传算法，通过拟合Nine的试验值，反求出中性层的偏移量、包辛格效应产生的应力降低率，并应用到拉延筋解析模型中，得到一个更为准确的拉延筋解析模型。
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| 关 键 词： | 拉延筋约束力 各向异性 包辛格效应 中性层 小种群遗传算法 |
| 文章编号： | 1004-132X（2006）02-0208-04 |
| 收稿时间： | 2005-04-25 |
| 修稿时间： | 2005-04-25 |
An Analytical Drawbead Model Based on the Inversely Determined Parameters |
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| Wu Lei,Han Xu,Li Guangyao,Liu Guirong.An Analytical Drawbead Model Based on the Inversely Determined Parameters[J].China Mechanical Engineering,2006,17(2):208-211. |
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| Authors: | Wu Lei Han Xu Li Guangyao Liu Guirong |
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| Abstract: | The paper suggested a drawbead model in which Bauschinger effect and incline of neutral layer were taken into account.A power model of strengthening was used to develop the relation between stress and strain,and the plane strain hypothesis was adopted to solve the drawbead restrain force.The improved micro-Genetic Algorithm was applied to inversely determine the factor of Bauschinger effect and incline of neutral layer by using the results from Nine's experiments.In this way,we may get a more accurate drabead model. |
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| Keywords: | drawbead restrain force anisotropy Bauschinger effect neutral layer micro-GA |
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