华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (2): 6-12.

• 力学 • 上一篇    下一篇

飞机圆弧风挡的抗鸟撞击问题研究

姚小虎1 韩强1 赵隆茂2 杨桂通2   

  1. 1.华南理工大学 交通学院,广东 广州 510640; 2 太原理工大学 应用力学研究所,山西 太原 030024
  • 收稿日期:2006-06-02 出版日期:2007-02-25 发布日期:2007-02-25
  • 通信作者: 姚小虎(1974-),男,博士生,讲师,主要从事冲击动力学和纳米力学研究。 E-mail:yaoxh1@263.net
  • 作者简介:姚小虎(1974-),男,博士生,讲师,主要从事冲击动力学和纳米力学研究。
  • 基金资助:

    国家自然科学基金资助项目(10672059) ;广东省自然科学基金资助项目(06025689,05300134) ;华南理工大学优秀博士论文创新基金资助项目

Investigation into Arc Windshield of Aircraft Subjected to Bird Impact

Yao Xiao-huHan QiangZhao Long-mao Yang Gui-tong2   

  1. 1. School of Traffïc and Communications , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. Institute of Applied Mechanics , Taiyuan Univ. of Tech. , Taiyuan 030024 , Shanxi , China
  • Received:2006-06-02 Online:2007-02-25 Published:2007-02-25
  • Contact: 姚小虎(1974-),男,博士生,讲师,主要从事冲击动力学和纳米力学研究。 E-mail:yaoxh1@263.net
  • About author:姚小虎(1974-),男,博士生,讲师,主要从事冲击动力学和纳米力学研究。
  • Supported by:

    国家自然科学基金资助项目(10672059) ;广东省自然科学基金资助项目(06025689,05300134) ;华南理工大学优秀博士论文创新基金资助项目

摘要: 完成了国产某型飞机圆弧风挡的抗鸟撞击实验,得到了风挡抗鸟撞击的临界速度及关键点的位移、应变时程曲线等数据.在实验研究的基础上,建立了飞机风挡及其相关部件的全尺寸有限元模型,应用非线性有限元程序LS-DYNA3D 对整个鸟撞击过程进行了数值模拟.对比风挡和鸟体的变形过程以及位移和应变的动态时程曲线可知,实验结果和数值结果吻合较好.文中同时给出了不同速度下撞击力随时间的变化曲线,分析了圆弧风挡在经受鸟体撞击时发生破坏的可能位直。

关键词: 鸟撞击, 圆弧风挡, 动态响应, 数值模拟

Abstract:

An experimental investigation into the arc windshield of a homemade aircraft subjected to bird impact was performed. The critical velocity of the arc windshield , the history curves of displacement and strain of the key point were all obtained. On the basis of the experimental investigation , a finite element model for the full-scale cir-cular arc windshield and the related parts of the aircraft was established. The whole process of bird impact was then numerically simulated using the nonlinear finite-element software LS DYNA3D. A comparison between the wind-shield and the bird in the deformation process and the dynamic history curves of displacement and strain was made ,showing that the experimental results accorded well with the simulated ones. Moreover , the impact force-time curves under different impact velocities were presented. The possible location where failure occurred was finally analyzed.

Key words: bird impact, arc windshield, dynamic response, numerical simulation