论文部分内容阅读
为了研究空降车着陆缓冲过程车体结构冲击响应,建立了车体有限元模型,运用显式有限元方法,结合实车空投试验的冲击加速度数据,以力的形式模拟车体着陆缓冲过程所受的冲击,仿真得到普通、恶劣和极限3种工况下着陆缓冲过程车体应力分布。结果表明:在3种着陆工况下,空降车左后立柱底端均为应力最大位置。研究结果可为空降车空投寿命预测及装备保障提供依据。
In order to study the impact response of the body structure of the landing vehicle during landing process, a finite element model of the vehicle body is established. By using the explicit finite element method and the impact acceleration data of the actual vehicle drop test, the vehicle body landing cushioning process is simulated The impact of the simulation, get the ordinary, harsh and extreme three kinds of conditions under the condition of landing buffer body stress distribution. The results show that under the three landing conditions, the bottom of the left rear post of the airborne vehicle is the maximum stress position. The research results can provide the basis for the airborne vehicle’s life prediction and equipment support.