| 基于响应面法的汽车前防撞梁轻量化分析 |
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| 引用本文： | 陈则尧,吴宪,丁巨岳.基于响应面法的汽车前防撞梁轻量化分析[J].计算机辅助工程,2014,23(3):16-20. |
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| 作者姓名： | 陈则尧 吴宪 丁巨岳 |
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| 作者单位： | 同济大学 汽车学院;同济大学 汽车学院;同济汽车设计研究院 |
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| 基金项目： | 上海市信息委员会专项资金（201201015） |
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| 摘 要： | 将原来的汽车前防撞横梁材料替换成超高强度钢后,在确保低速碰撞性能基础上,利用响应面法进行轻量化分析.建立前防撞梁有限元模型,用LS-DYNA进行低速碰撞仿真.在此基础上以横梁和吸能盒的厚度作为变量进行试验设计.构建各项碰撞性能的2阶多项式响应面模型,并验证模型的有效性.以质量和吸能作为优化目标,建立多目标优化模型.与原设计相比,求出的优化方案在保证低速碰撞性能的基础上实现前防撞梁减重36%.
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| 关 键 词： | 汽车 低速碰撞 前防撞梁 吸能盒 轻量化设计 响应面模型 多目标优化 |
| 收稿时间： | 2013/9/18 0:00:00 |
| 修稿时间： | 2013/10/24 0:00:00 |
Lightweight analysis of front bumper beam based on response surface method |
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| CHEN Zeyao,WU Xian and DING Juyue.Lightweight analysis of front bumper beam based on response surface method[J].Computer Aided Engineering,2014,23(3):16-20. |
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| Authors: | CHEN Zeyao WU Xian and DING Juyue |
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| Affiliation: | School of Automotive Studies, Tongji University;School of Automotive Studies, Tongji University;Tongji Automotive Design and Research Institute |
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| Abstract: | After the original material of automotive front bumper crossbeam is replaced by ultra high strength steel, the lightweight analysis is performed by response surface method under the condition of ensuring low speed crashworthiness. A finite element model is built for the front bumper beam and the low speed impact simulation is performed by LS DYNA. The thicknesses of crossbeam and crash box are taken as the variables for design of experiments. The second order polynomial response surface models are built and their effectiveness is verified. Taking the mass and absorbed energy as objectives, a multi objective optimization model is built. Under the condition of ensuring low speed crashworthiness, the front bumper beam of the optimization scheme is 36% lighter than the original one. |
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| Keywords: | automobile low speed crash front bumper beam crash box lightweight design response surface model multi objective optimization |
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