直升机风挡及附属结构抗鸟撞性能分析  

The Bird Strike Analysis of Helicopter Windshield and Accessory Structure

作　　者：田中强[1] 树德军[1] 常成[1] 潘江华[1] 

机构地区：[1]中国直升机设计研究所,景德镇333001

出　　处：《直升机技术》2009年第4期31-35,共5页Helicopter Technique

摘　　要：建立直升机前机身风挡及附属框架有限元模型,根据鸟体材料特性,建立了基于Lagrange元的鸟体有限元模型。考虑撞击风挡框架及玻璃中间部位两种工况,利用基于多学科的MD Nastran显式非线性方法,设置鸟体与撞击部位的接触方式及撞击时间,并求得撞击过程的时间步长,分析每个步长下风挡玻璃及附属结构的动态响应,绘制它们的最大应力及变形变化曲线,对比设计要求,最后得出:风挡玻璃及附属结构满足抗鸟撞设计要求。A numerical model of front helicopter fuselage,including framework and windshield is established.Based on the property of bird material,the Lagrange element of bird model is introduced.Considering two conditions that the bird impact the middle of windshield and framework,the explicit nonlinear method in the MD Nastran based on Multidisciplinary Design is used.The contact mode and impact time are set on the place of impact area.The Steps of the time is given in the impact progress.The dynamic response of eve...

关 键 词：直升机 风挡 鸟撞 

分 类 号：V275.1[航空宇航科学与技术—飞行器设计]