北京航空航天大学学报 ›› 2008, Vol. 34 ›› Issue (02): 206-209.

• 论文 • 上一篇    下一篇

流体驱动高速机构中缓冲装置的优化设计

陈卫卫,孙凌玉,张广越,李飞   

  1. 北京航空航天大学 汽车工程系, 北京 100083
  • 收稿日期:2007-03-01 出版日期:2008-02-29 发布日期:2010-09-17
  • 作者简介:陈卫卫(1982- ),男,山西晋城人,博士生,chenweiwei@ae.buaa.edu.cn.
  • 基金资助:

    凡舟科研基金资助项目(20031306)

Optimization of energy absorption in high speed fluid-driven mechanism

Chen Weiwei, Sun Lingyu, Zhang Guangyue, Li Fei   

  1. Dept. of Automobile Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2007-03-01 Online:2008-02-29 Published:2010-09-17

摘要: 受流体驱动高速运动的机构,受阻后突然停止将导致零件变形甚至断裂.为得到缓冲结构的最佳方案,运用正交试验法从27种设计方案中确定了9个试验样本,并通过流固耦合与非线性有限元法对其高速运动与冲击过程进行了仿真分析.在此基础上,应用改进的BP(Error Back-Propagation)网络训练得到吸能结构参数与零件应变能的非线性映射关系.通过优化,得到了最佳方案,明显提高了方案优选效率.

Abstract: For a high speed moving mechanism driven by fluid, abrupt stop resulted from barriers will lead to its large deformation, even fracture. To achieve optimum structural style and parametric matching of buffer members, nine test samples were selected out of twenty-seven design styles through orthogonal experiment method in advance. Their high-speed moving and impacting process were simulated by nonlinear finite element method(FEM) considering fluid structure interaction. On the basis of the above results, a modified error back-propagation(BP) network method was applied to train these samples, and obtained the nonlinear mapping relation between parameters of tubes for energy absorption and strain energy of crucial parts. The optimum structural parameters of buffer tube were determined, at the same time, the efficiency of schemes selection was improved obviously.

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