空投货物冲击过程的仿真

Simulation of the impact response of airdropping cargo

空投物资方式越来越多地应用于救灾等紧急情况,为使物资安全着陆,往往是通过大量的外场试验来模拟实际情况,根据试验结果逐步改进货物的组合或包装。这种方法会耗费大量的时间和成本。在建立空投货物模型的基础上,利用计算机仿真货物与地面冲击的过程,分析下落速度、货物材料、厚度对最大加速度和脉冲持续时间的影响,用于指导实际的外场试验,从而节约时间和成本。

Cargo airdropping is more and more frequently used in emergency. To ensure the landing safety of cargo, many experiments are required before packaging can be improved. However, it is time -consuming and costly. This paper models airdropping, simulated the process of cargo impacting ground, analyzes the effects of airdrop velocity, cargo materials, and cargo thickness on peak acceleration and pulse duration. It helps to provide guidelines for field experiments, and accordingly reduces the time and the cost.