【摘要】：目的研究空投水袋200 m高空的跌落沖擊過(guò)程,驗(yàn)證雙層超彈性材料包裝方案的可行性。方法基于Ansys/LS-DYNA軟件平臺(tái),以盛裝5 kg飲用水的水袋為例,采用數(shù)值模擬的方法研究著陸沖擊過(guò)程中水袋主要力學(xué)參數(shù)的微觀變化過(guò)程,包括形狀變化、節(jié)點(diǎn)速度及應(yīng)力的變化過(guò)程,并模擬出水袋著陸沖擊的破壞情況。結(jié)果水袋四周的形狀、節(jié)點(diǎn)速度及應(yīng)力參數(shù)均在著陸瞬間發(fā)生急劇變化,直至水袋破裂。結(jié)論著陸瞬間液體向四周的急劇擴(kuò)散是水袋破壞的主要原因,而且著陸時(shí)水袋側(cè)面是最容易破壞的部位。雙層超彈性材料的包裝方案還不能滿足飲用水200 m高空的空投包裝需求。
[Abstract]:Aim to study the drop impact process of air-drop water bag at 200 m altitude and verify the feasibility of double layer hyperelastic material packaging. Methods based on the Ansys/LS-DYNA software platform and taking the water bag containing 5 kg potable water as an example, the microscopic change process of the main mechanical parameters, including the shape change, of the water bag during landing impact was studied by numerical simulation. The change process of the velocity and stress of the joint is simulated, and the failure of the landing impact of the water bag is simulated. Results the shape, node velocity and stress parameters of the water bag changed sharply at the moment of landing until the bag burst. Conclusion the rapid diffusion of liquid around the landing is the main reason for the damage of the water bag, and the side of the bag is the most easily damaged part during the landing. The packing scheme of double layer hyperelastic material can not meet the requirement of air drop packing for drinking water at 200 m altitude.
【作者單位】： 空軍空降兵學(xué)院;
【分類號(hào)】：TB485.1
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本文編號(hào)：2298833