战车载人空投着陆缓冲过程仿真模型研究

A study on soft-landing buffering process of manned armored vehicle airdrop

针对实装空投试验存在耗费巨大、实施复杂等问题,采用有限元法(finite element method,FEM)建立战车载人空投有限元仿真模型,分析其着陆缓冲适应性。通过实装空投试验对有限元模型进行校验,证明模型是可行的。对典型空投条件下的战车载人空投着陆缓冲过程进行计算,分析乘员在着陆冲击下的动力学特性和安全性。仿真结果表明:气囊缓冲系统可实现战车载人空投在着陆场海拔3000 m以下地区、垂直着陆速度小于9 m/s、纵向水平着陆速度小于8 m/s、横向水平着陆速度小于6 m/s情况下的有效缓冲,乘员头部、胸部和颈部各项伤害指标值均小于人体耐受限值,载人空投是安全的。

Since it was very costly and complicated to implement airdrop tests using real equipment,a finite element method(FEM)was taken to build the simulation model of manned armored vehicle airdrop to analyze its landing buffering adaptability.The finite element model was verified by a real equipment airdrop test,and the model was proved to be feasible.Through simulating calculation of the soft-landing buffering process of manned armored vehicle airdrop under typical airdrop conditions,an analysis was conducted toward the dynamic characteristics and safety of the crew under the impact of landing.The simulation results show that the airbag buffer system can help manned armored vehicle airdrop realize effective buffer under the circumstances of the landing ground at an altitude of 3000 m below sea level,vertical landing velocity less than 9 m/s,longitudinal horizontal landing speed less than 8 m/s,horizontal speed less than 6 m/s.The damage parameters of crew’s head,chest and neck are less than the tolerance limits of human body.Manned armored vehicle airdrop is thus safe.