| 八边形逐级吸能梁的设计与优化 |
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| 引用本文： | 曹立波,崔崇桢,白中浩,丁海建.八边形逐级吸能梁的设计与优化[J].湖南大学学报(自然科学版),2010,37(1). |
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| 作者姓名： | 曹立波 崔崇桢 白中浩 丁海建 |
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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,湖南,长沙,410082 |
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| 基金项目： | 教育部科学技术研究重点项目(107083);;教育部长江学者与创新团队发展计划资助项目(531105050037);;湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(60870004) |
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| 摘 要： | 研究了一种八边形截面逐级吸能梁结构的设计与优化方法.建立了八边形逐级吸能梁的有限元模型,通过台车试验验证了模型的有效性.采用均匀试验设计方法制订并进行了一系列不同壁厚的八边形逐级吸能梁碰撞仿真,利用仿真结果建立八边形逐级吸能梁的耐撞性回归方程,并进行了回归分析.利用遗传算法,以八边形逐级吸能梁壁厚为变量,对该吸能梁耐撞性进行多目标优化设计,获得一组耐撞性较好的八边形逐级吸能梁设计方案,并将优化方案用于车架耐撞性改进.仿真及试验结果表明,该八边形逐级吸能结构变形吸能均匀,能够更好地达到碰撞安全性要求.
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| 关 键 词： | 八边形 逐级吸能 耐撞性 优化 |
Design and Optimization of the Octagonal Step by Step Energy |
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| CAO Li-bo,CUI Chong-zhen,BAI Zhong-hao,DING Hai-jian.Design and Optimization of the Octagonal Step by Step Energy[J].Journal of Hunan University(Naturnal Science),2010,37(1). |
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| Authors: | CAO Li-bo CUI Chong-zhen BAI Zhong-hao DING Hai-jian |
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| Affiliation: | State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body;Hunan Univ;Changsha;Hunan 410082;China |
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| Abstract: | The structural design and optimization method of the octagonal beam with step by step energy absorbing characteristics were introduced.The finite element model of the beam was developed and validated through sled test.Uniform design method was used to set the scheme of the impact simulation of the beams with different thickness.The crashworthiness regression formulations were defined on the basis of the simulation results,and regression analyses were conducted.The Genetic Algorithm(GA) was used in the multi... |
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| Keywords: | octagon step by step energy absorbing crashworthiness optimization |
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