大型民用飞机风挡鸟撞的适航分析与数值仿真

鸟撞一直都是航空安全的隐患，对此需要有相应的适航条款来表明民用飞机相关部件的抗鸟撞性能符合要求。针对风挡鸟撞问题现状，分析了目前民用飞机鸟撞适航验证的方法和手段，对比研究了不同鸟撞数值模型，通过计算机辅助设计软件建立了某型民用飞机风挡三维几何模型，采用显式非线性数值分析软件ANSYS/LS-DYNA进行风挡鸟撞过程的数值仿真分析，以期为大型民机风挡鸟撞适航验证提供更有效的方法和手段，提高适航验证工作效率，降低工作成本。

Airworthiness Analysis and Numerical Simulation of Bird Impact on Large Civil Aircraft Windshield

Bird strike is a major threat to aircraft windshields and need a certification requirement for a proven level of impact resistance. Apart from costly bird strike experiments, explicit numerical modeling techniques have been employed. This paper summarized the current airworthiness verification methods of bird strike,compared the different bird strike analysis models. With the help of Computer Aided Design software,established a three-dimensional geometric model of a certain type of civil aircraft windshield,and the simulation of the dynamic process of bird impacting windshield is run using the nonlinear explicit finite element code ANSYS/LS-DYNA. The solution of analysis presents the theoretical basis for the airworthi-ness certification methods of bird strike windshield,in hope of improving the efficiency of airworthiness ver-ification work and reducing the cost.