| 基于响应面和kriging代理模型的汽车B柱优化设计 |
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| 引用本文： | 徐增密,刘立忠,申国哲,靳春宁,胡平.基于响应面和kriging代理模型的汽车B柱优化设计[J].汽车技术,2012(4):39-43. |
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| 作者姓名： | 徐增密 刘立忠 申国哲 靳春宁 胡平 |
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| 作者单位： | 大连理工大学 工业装备结构分析国家重点实验室 |
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| 基金项目： | 国家自然科学基金，国家基础研究发展计划(973计划)，中央高校基本科研业务费专项资金 |
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| 摘 要： | 为保证B柱耐撞性,同时减轻其质量以实现汽车轻量化,对某轿车B柱侧面碰撞进行了有限元分析.针对B柱外板、内板和两加强板厚度,设计了L16(45)正交试验,并由此进行仿真,得到胸部和腹部侵入量与侵入速度的数学代理模型.应用序列二次规划对B柱各板厚度进行优化,可知B柱质量减轻11.6％,在兼顾耐撞性的同时实现了汽车轻量化.
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| 关 键 词： | 汽车轻量化 B柱 优化设计 正交试验 |
Optimization Design of B- pillar based on Response Surface and Kriging Surrogate Model |
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| Xu Zengmi
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Liu Lizhong
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Shen Guozhe
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Jin Chunning
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Hu Ping.Optimization Design of B- pillar based on Response Surface and Kriging Surrogate Model[J].Automobile Technology,2012(4):39-43. |
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| Authors: | Xu Zengmi Liu Lizhong Shen Guozhe Jin Chunning Hu Ping |
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| Institution: | (State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology) |
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| Abstract: | In order to enhance the crashworthiness of B-pillar in side impact and reduce its mass to achieve light-weighting,a side impact simulation on the B-pillar of a car and its structural optimization by finite element analysis are conducted.An orthogonal experiment(L16(45)) was designed with some parameters including the thickness of outer panel,inner panel and reinforcements.Then,the surrogate models of the intrusion and intrusion velocity on chest and abdomen is built.Finally,the optimized thickness is obtained using sequential quadratic programming.The mass of B-pillar is reduced by 11.6%.The result indicates that the optimization of the thickness can effectively meet the requirements of crashworthiness and lightweight design. |
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| Keywords: | Lightweight design B-pillar Optimization design Orthogonal experiment |
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