摘要
针对某民机风挡结构鸟撞试验,采用LS-DYNA有限元软件再现了风挡结构的鸟撞动响应结果,计算所得结构破坏区域与破坏形式及试验结果吻合。分析认为导致龙骨破坏的原因是夹持玻璃的龙骨整体刚度不够,而局部刚度又相对过强。为此参考波音飞机风挡结构构型,提出将原风挡夹持结构改为螺栓连接悬挂结构,并对新构型的风挡结构进行了动响应分析。计算结果表明:风挡玻璃采用螺栓连接悬挂于龙骨结构上的安装构型能有效提高风挡结构的抗鸟撞特性。
Aim.To ensure the strength of windshield and its support of a certain Chinese civil aviation aircraft,we impacted 1.8 kg of chicken against windshield at high speed on each of three selected spots and found that the support showed a long crack as shown in Fig.5 of the full paper.Obviously the cause and its solution must be found.The finite element analysis we are going to use is performed by using the nonlinear explicit finite element(FE) program LS-DYNA.Section 1 of the full paper explains the windshield a...
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2009年第4期481-485,共5页
Journal of Northwestern Polytechnical University
关键词
飞机
有限元
鸟撞
风挡结构
民机
aircraft
finite element method
bird impact
windshield support structure
civil aviation aircraft
