| 变截面梁的抗撞性分析及应用 |
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| 引用本文： | 武和全,杨家兴,辛勇.变截面梁的抗撞性分析及应用[J].长安大学学报(自然科学版),2010(1). |
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| 作者姓名： | 武和全 杨家兴 辛勇 |
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| 作者单位： | 长沙理工大学汽车与机械工程学院;江西蓝天学院机械系;南昌大学机电工程学院; |
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| 基金项目： | 国家自然科学基金项目(50645032); 江西省科技攻关计划项目(C0202400) |
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| 摘 要： | 在研究多种不同截面形状薄壁梁碰撞吸能特性的基础上,提出了一种有效的变截面梁结构。选取变截面梁的主要设计参数作为研究对象,将有限元分析与试验设计、响应面法等结合起来,对变截面梁的抗撞性能进行分析,建立了变截面梁的抗撞性多目标优化模型;采用优化算法进行求解,得到了变截面梁的最优设计参数和多目标优化后的Pareto最优解,并通过有限元分析对最优设计参数进行了验证;最后将优化后的变截面前纵梁结构应用于某越野车40%偏置碰模拟中。试验结果表明,碰撞侧A柱的加速度峰值显著降低,整车的被动安全性得到提高。
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| 关 键 词： | 汽车工程 优化设计 变截面梁 抗撞性 吸能 |
Analysis and application of thin-walled rail with variable section for crashworthiness |
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| WU He-quan,YANG Jia-xing,XIN Yong.Analysis and application of thin-walled rail with variable section for crashworthiness[J].JOurnal of Chang’an University:Natural Science Edition,2010(1). |
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| Authors: | WU He-quan YANG Jia-xing XIN Yong |
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| Institution: | WU He-quan1,YANG Jia-xing2,XIN Yong3(1.School of Automotive , Mechanical Engineering,Changsha University of Science , Technology,Changsha 410114,Hunan,China,2.Department of Mechanical Engineering,Jiangxi Bluesky University,Nanchang 330098,Jiangxi,3.School of Mechanical , Electrical Engineering,Nanchang University,Nanchang 330031,China) |
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| Abstract: | An effective structure of thin-walled rail with variable section was proposed by comparing a variety of thin-walled rails with different section features.Several design parameters of the structure were used to optimize the rail's structure.Optimal design method was presented and utilized to obtain optimal crashworthiness design of the thin-walled rail with variable section.The quadratic models for energy absorption and maximum impact force were created using response surface methodology exploiting finite el... |
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| Keywords: | automobile engineering optimal design thin-walled rail with variable section crashworthiness energy absorption |
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