摘要
缓冲性能是气垫式起落系统的一个重要功能,基于以某型地效飞行器为背景的气垫式起落系统方案设计,建立了气垫式起落系统落震仿真模型。利用有限元理论和LS-DYNA仿真平台对气垫式起落系统缓冲性能进行仿真分析。结果表明气垫式起落系统在落震过程中未出现反弹,气囊最大压缩位移为1.015 m,小于允许最大压缩位移1.502 m;整个落震过程出现的最大过载为2.87 g,小于允许最大过载3 g。验证了气垫式起落系统在落震过程中缓冲行程及缓冲性能满足要求。
Cushioning performance is an important function of Air Cushion Landing System（ ACLS）. The scheme design of ACLS is under the background of the ground- effect aircraft^ development. The landing simulation model is established. Simulation analysis on the cushioning performance of ACLS uses the fi-nite element theory on the LS - DYNA simulation platform. The results show that the air bag does not re-bound in the process of landing and the maximum displacement is 1.015 m,which is less than the maxi-mum allowable displacement 1.502 m; The maximum overload of the whole system is 2. 87 g , which is less than the maximum allowable load 3 g. It is verified that both the bagrs stroke and cushioning perform-ance meet the requirements.
出处
《航空计算技术》
2017年第2期59-62,共4页
Aeronautical Computing Technique
基金
中央高校基本科研业务费专项资金资助(NP2015402)
机械结构力学及控制国家重点实验室(南京航空航天大学)自主研究课题资助(0214G01)
江苏省高校优势学科建设工程资助项目
