| 基于混合近似模型的汽车正面碰撞耐撞性优化设计 |
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| 引用本文： | 王国春,成艾国,顾纪超,宋凯,钟志华. 基于混合近似模型的汽车正面碰撞耐撞性优化设计[J]. 中国机械工程, 2011, 22(17) |
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| 作者姓名： | 王国春 成艾国 顾纪超 宋凯 钟志华 |
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| 作者单位： | 湖南大学汽车车身先进设计制造国家重点实验室,长沙,410082 |
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| 基金项目： | 汽车车身先进设计制造国家重点实验室自主研究课题(60870002); 教育部长江学者与创新团队发展计划资助项目(531105050037) |
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| 摘 要： | 以汽车前部结构主要零件的厚度为变量,采用拉丁超立方试验设计方法生成100个汽车正面碰撞有限元仿真模型样本数据并进行计算,对计算结果应用Kriging模型、最小二乘响应面模型、径向基函数模型构建前部结构质量、B柱加速度最大值和前部结构最大吸能相对于各部件厚度的三种近似模型。以B柱加速度最大值为目标,约束前部结构最大吸能、前部结构零件质量及各零件厚度,利用模拟退火算法和三种空间密集撒点优化搜索方法,最终得到一组最优的前部零件厚度组合,使得B柱加速度最大值最小。研究表明,该方法计算精度和效率较好地满足了耐撞性工程设计的需求。
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| 关 键 词： | 耐撞性 Kriging模型 最小二乘响应面模型 径向基函数模型 拉丁超立方 自适应模拟退火算法 |
Design Optimization on Crashworthiness of Vehicle Front Impact Based on Hybrid Approximate Model |
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| Wang Guochun Cheng Aiguo Gu Jichao Song Kai Zhong Zhihua State Key Laboratory of Advanced Design , Manufacture for Vehicle Body,Hunan University,Changsha. Design Optimization on Crashworthiness of Vehicle Front Impact Based on Hybrid Approximate Model[J]. China Mechanical Engineering, 2011, 22(17) |
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| Authors: | Wang Guochun Cheng Aiguo Gu Jichao Song Kai Zhong Zhihua State Key Laboratory of Advanced Design Manufacture for Vehicle Body Hunan University Changsha |
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| Affiliation: | Wang Guochun Cheng Aiguo Gu Jichao Song Kai Zhong Zhihua State Key Laboratory of Advanced Design and Manufacture for Vehicle Body,Hunan University,Changsha,410082 |
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| Abstract: | The thicknesses of vehicle front parts were defined as variables,and 100 points of vehicle front crash finite element models were sampled by the Latin hypercube design of experimental method.The Kriging model,LSR model and RBF model were then applied to construct the approximate models of the weight of front structure,the maximal acceleration of B pillar and the maximal absorbed energy of front structure according to the FEM simulation results.In the optimization of maximal acceleration of B pillar,the weig... |
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| Keywords: | crashworthiness Kriging model least squares regression(LSR) model radial basis function(RBF) model Latin hypercube adaptive simulated annealing(ASA) |
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