| 车身覆盖件回弹控制的成形工艺多目标优化 |
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| 引用本文： | 阳湘安,阮锋.车身覆盖件回弹控制的成形工艺多目标优化[J].上海交通大学学报,2011,45(11):1673-1677. |
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| 作者姓名： | 阳湘安 阮锋 |
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| 作者单位： | (1. 广东技术师范学院 机电学院， 广州 510643； 2. 华南理工大学 机械与汽车工程学院，广州 510640) |
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| 基金项目： | 国家自然科学基金资助项目(50805050) |
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| 摘 要： | 分析了车身覆盖件成形工艺优化问题中回弹评价目标函数的确定准则，建立了合理的基于回弹控制的成形工艺多目标优化模型.采用实验设计 (DOE)、径向基函数神经网络(RBF)和非支配排序遗传算法(NSGA II)相结合的优化策略对问题进行了全局优化求解，在与相应的单目标优化结果对比后，分析了压边力和拉延筋力对回弹的影响机理.结果表明，压边力主要通过对工件的塑性变形产生影响，进而影响回弹，随着压边力的增加工件塑性变形程度加大而回弹急剧减少，但是当压边力增大到一定程度后工件的回弹反而增大；拉延筋力则主要对工件的内应力分布产生较大影响，并因此影响工件切边后的回弹.与相应的单目标优化模型相比，文中的多目标优化模型在控制回弹的同时能够更全面地考虑板料成形的其他缺陷.
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| 关 键 词： | 回弹 优化 板料冲压 成形工艺 |
| 收稿时间： | 2010-11-19 |
Multi-Objective optimization of Forming Process for Auto-body Panel Based on Springback Control |
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| YANG Xiang-an,RUAN Feng.Multi-Objective optimization of Forming Process for Auto-body Panel Based on Springback Control[J].Journal of Shanghai Jiaotong University,2011,45(11):1673-1677. |
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| Authors: | YANG Xiang-an RUAN Feng |
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| Institution: | (1. College of Electromechanial Engineering, Guangdong Polytechnic Normal University,Guangzhou 510643, China; 2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China） |
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| Abstract: | Selection criteria of objective function in the optimization model aimed to reduce springback for auto-body panel were discussed.Taking the automobile roof panel as an example,a multi-objective optimization model was established to control springback.The design of experiment(DOE),radial basis function neural networks(RBF) and non-dominated sorting genetic algorithm(NSGA-II) were employed to solve the model.The solution was compared with that of the corresponding single-objective optimization models to analy... |
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| Keywords: | springback optimization sheetmetal stamping forming process |
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