摘要
采用非线性有限元法,基于ABAQUS/Explicit软件平台及内嵌的材料用户定义子程序(VUMAT),建立了鸟撞飞机风挡的力学分析模型。比较了有限元模型中玻璃骨架、弧框和橡胶垫片对风挡动响应分析结果的影响,并与全尺寸风挡鸟撞试验数据进行了对比。对比结果表明,考虑了玻璃骨架、弧框和橡胶垫片的有限元模型所计算得到的位移、应变曲线与试验实测曲线的一致性有了改善。最后,探讨了玻璃骨架、橡胶垫片的厚度和弹性模量对风挡抗鸟撞能力的影响规律,为风挡的抗鸟撞设计及改型提供参考。
A finite element model（FEM） of bird impact on the windshield is established via the nonlinear finite element method,combined with the user-defined materials subroutine（VUMAT） of the ABAQUS/Explicit software.The dynamic response of bird strike on aircraft windshield is analyzed in two different configurations,with and without the surrounding structure frame,skin and rubber layer.By comparing the simulation results and the full-scale experiment data,the results of FEM with the surrounding structure have a better agreement with the experiments in the instantaneous deformation of bird and windshield,the damage modes of the windshield,the displacement curves and the strain curves of the measured points on the windshield.In addition,the sensitivities of the design parameters of aircraft windshield,including skin thickness,skin elastic modulus,rubber thickness,and rubber elastic modulus are discussed on the windshield capability against bird-strike comprehensively.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2011年第6期738-743,共6页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
鸟撞
风挡
抗鸟撞设计
有限元模型
bird strike
windshield
anti-bird impact design
finite element model（FEM）
