飞机圆弧风挡鸟撞击问题有限元模拟  

Numerical Simulation of Arc Windshields of Aircrafts Subjected to Bird Impact

作　　者：刘晓明 胡伯仁 肖颖 姚小虎[2] 

机构地区：[1]成都飞机公司技术中心,四川成都610092 [2]华南理工大学交通学院工程力学系,广东广州510640

出　　处：《计算机仿真》2007年第7期38-42,共5页Computer Simulation

基　　金：广东省自然科学基金资助项目(05300134)

摘　　要：研究了飞机圆弧风挡受鸟撞击的问题。基于飞机圆弧风挡玻璃受鸟体撞击的实验观察,首次建立了国产某型军用飞机圆弧风挡及其相关部件的全尺寸有限元分析模型。利用流固耦合方法分析了圆弧风挡受鸟撞击问题。计算结果得到了风挡整体结构的变形、位移、应变、应力等几方面的数据,给出了不同速度下撞击力随时间的变化曲线,给出了圆弧风挡在经受鸟体撞击时发生破坏的可能位置。研究结果表明,该圆弧风挡满足工程设计的需要,数值模拟与实验相应结果吻合较好,说明模拟工作的有效性。同时数值模拟结果为研制新机型提供了有价值的数据。The bird - striking of arc windshield of aircraft is studied. On the basis of experimental observation for arc windshields of aircrafts subjected to bird impact, a finite element model including full - scale circular arc windshield glass and the relative parts of a military plane is established at the first time. The bird - striking of arc wind- shield of aircraft is analyzed using the liquid - solid coupling method. The data of displacement, strain, stress and contact force in the process of deformation are obtained. The curves of impacting force - time under different velocities are given. The possible location where failure may occur is given. The computer simulation provides valuable data for researching and designing new air planes.

关 键 词：鸟撞 圆弧风挡 有限元 非线性动力响应 

分 类 号：O347.3[理学—固体力学]