重型装备空投用连通型气囊缓冲特性仿真  

Simulation of Cushioning Characteristics of Communicated Airbag for Airdrop of Heavy Equipment

作　　者：李建阳 李来委 刘春生[3] 白云[4] LI Jian-yang;LI Lai-wei;LIU Chun-sheng;BAI Yun(School of Non-commissioned Officer,Space Engineering University,Beijing 102249,China;Space Engineering Technology Brigade,Beijing 100085,China;China North Vehicle Research Institute,Beijing 100072,China;No.63628 Unit of PLA,Beijing 101601,China)

机构地区：[1]航天工程大学士官学校,北京102249 [2]航天工程技术大队,北京100085 [3]中国北方车辆研究所,北京100072 [4]中国人民解放军63628部队,北京101601

出　　处：《包装工程》2022年第1期278-284,共7页Packaging Engineering

摘　　要：目的为了探究连通型气囊在重型装备空投缓冲时的着陆缓冲特性,对其进行有限元建模及仿真研究。方法采用均压多腔室流动气囊模型理论建立装备-气囊系统有限元模型,通过显式非线性有限元方法模拟求解其跌落缓冲过程,并进行连通孔大小对缓冲特性的影响分析。结果随着连通孔面积的增大,各气室之间的内压差距变小,最大偏差从13.2%逐渐变小至0,加速度峰值从7.130g逐渐变小直至6.925g,但是总体上加速度峰值变化不大。采用连通型气囊能够实现与非连通气囊基本相同的缓冲特性,对于重心偏前的装备而言,为了避免装备俯仰过度,连通孔的大小不宜设置过大。结论该研究可为重型装备空投用连通型气囊的设计、改进提供理论基础和技术手段。The work aims to explore the cushioning characteristics of communicated airbag for airdrop of heavy equipment by establishing the finite element model and conducting simulation.The finite element model of equipment&airbag system was established by uniform pressure multi-chamber airbag model theory.The drop and cushion process was resolved and simulated by explicit nonlinear finite element method.The effect of communicated hole size on cushioning characteristics was analyzed.As the communicated hole size increased,the pressure difference among chambers became smaller,the maximum deviation gradually decreased from 13.2%to 0,and the acceleration peak gradually decreased from 7.130g to 6.925g,but the acceleration peak did not change much on the whole.The communicated airbag could achieve basically the same cushioning characteristics as the uncommunicated airbag.For the equipment with front center of gravity,in order to avoid excessive pitching of the equipment,the size of the communicated hole should not be set too large.The research results provide theories and technical means for design and improvement of communicated airbag for airdrop of heavy equipment.

关 键 词：重型装备 空投 连通型气囊 缓冲特性 有限元分析 

分 类 号：TB485.1[一般工业技术—包装工程] V244.49[航空宇航科学与技术—飞行器设计]