物资空投包装缓冲设计与分析

目的介绍空投包装缓冲方案设计,包括钢丝绳隔振缓冲系统设计和泡沫衬垫缓冲系统设计,便于更好地选取适宜的缓冲材料和缓冲形式,确保空投的安全可靠。方法针对物资在空投时开伞与着陆等2种冲击工况进行有限元分析计算。根据2种工况所受最大冲击,开展空投包装缓冲方案设计。结果着陆瞬间的最大应力为4.8 MPa,最大位移为0.666 mm;反弹过程中的最大应力为13.3 MPa,y向最大位移为5.49 mm;冲击隔振计算和缓冲衬垫结构校核均通过。结论采用内部泡沫衬垫缓冲、外部钢丝绳隔振的空投包装缓冲方案,缓冲性能优良,满足空投后内装物资完好的设计要求。

Design and Analysis of Materials Airdrop Packaging Cushioning

This paper introduced airdrop cushioning packaging design, including wire rope vibration isolation and cushioning system design and foam pad buffer system design, in order to select appropriate cushioning material and buffer form, to ensure safety and reliability of airdrop. Targeting at the two impact conditions of materials during airdrop, namely parachute opening and landing, finite element analysis and calculation were conducted. And airdrop cushioning packaging design was conducted according to the maximum impact in the two conditions. The maximum stress of touchdown instant was 4.8 MPa, and the maximum displacement was 0.666 mm. The maximum stress of the rebound process was 13.3 MPa, and the maximum y directional displacement was 5.49 mm. The shock isolation calculation and buffer pad structure check both passed. The drop packing buffer scheme using an internal foam pad buffer system and an external wire rope vibration isolation system had excellent buffer performance, and could meet the design requirements of maintaining packaged materials intact after airdrop.