飞机圆弧风挡的抗鸟撞击问题研究  

Investigation into Arc Windshield of Aircraft Subjected to Bird Impact

作　　者：姚小虎[1] 韩强[1] 赵隆茂[2] 杨桂通[2] 

机构地区：[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

出　　处：《华南理工大学学报（自然科学版）》2007年第2期6-12,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：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置.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.

关 键 词：鸟撞击 圆弧风挡 动态响应 数值模拟 

分 类 号：O347.1[理学—固体力学]