摘要
为提高薄壁吸能管的耐撞性,该文设计了一种复合材料仿竹薄壁管。将钢材、铝材及复合材料运用于仿竹薄壁管,利用有限元法模拟薄壁管的轴向碰撞,对比分析了三类材料薄壁管的耐撞吸能效果,得出玻璃纤维/环氧树脂基复合材料仿竹薄壁管耐撞吸能效果最佳。为进一步提高薄壁管的耐撞性和可靠性,将试验设计、响应面模型、可靠性理论和优化算法相结合,求出仿竹薄壁管的最优结构。研究表明,仿生设计、复合材料运用、可靠性理论及优化算法相结合的研究方法可提高薄壁管的耐撞性能。
In order to improve the crashworthiness of the thin-walled energy absorption tube, the bamboo-like thin-walled tubes with steel, aluminum and composite materials incorporated are designed. The finite element method is adopted to simulate the axial impact of the bamboo-like thin- walled tube for analyzing the energy absorption effect of the three kinds of material tubes when the collision happens. The result shows that the glass fiber/epoxy resin composite material bamboo-like thin-walled tube is the best for energy absorption. To improve the crashworthiness and the reliability of the thin-walled tube, the design of experiments, the response surface model, the reliability theory, and the optimization algorithm are combined to obtain the optimum structure of the bamboo-like thin- walled tube. The results show that the method combining the bionic design,the composite material, the comprehensive reliability theory and the optimization algorithm is useful for improving the crash-worthiness of the thin-walled tube.
作者
武和全
毛鸿锋
侯海彬
Wu Hequan Mao Hongfeng Hou Haibin(Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle,College of Hunan Province,Changsha University of Science and Technology,Changsha 410114,China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University, Changsha 410082 , China)
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2017年第2期186-190,197,共6页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金(51405035)
湖南省自然科学基金(2015JJ6003)
湖南省教育厅科学研究项目(16B015)
工程车辆轻量化与可靠性技术湖南省高校重点实验室开放基金(2012KFJJ0)
关键词
仿竹薄壁管
复合材料
耐撞性
可靠性优化
bamboo-like thin-walled tubes
composite materials
crashworthiness Reliability optimization
