中文摘要：

目的以冲压式空投气囊为研究对象,对气囊的着陆缓冲过程进行有限元仿真,以研究其缓冲性能。方法使用Solid Works软件建立了气囊和装备的几何模型,导入到有限元分析软件Ansys/LS-DYNA中划分网格,加载并进行求解,并用后处理软件Ls-prepost对仿真结果进行分析,得出了气囊的体积和压力变化曲线,以及空投装备的位移、速度和加速度的变化曲线。结果气囊在着陆缓冲过程中的最大压力为0.198 MPa,空投装备的着陆冲击加速度峰值为175 m/s2（17.9g）。结论空投装备的最大冲击过载是17.9g,装备最大过载Amax〈允许过载20g,气囊满足性能要求。气囊内压力峰值对于气囊的设计有重要影响,以气囊峰值压力0.198 MPa为参考标准,在气囊材料选取和气囊加工方面要确保气囊能承受相当的峰值压力,以避免缓冲时气囊发生爆裂。

英文摘要：

This paper took the ram airdrop airbag as the research object, and simulated its landing process to research its cushion performance. The paper established a geometric model of the airbag and equipment through Solid Works software, which was then imported into the finite element analysis software Ansys/LS-DYNA and meshed, loaded and solved. The simulation results were analyzed using the post-processing software Ls-prepost. The variation curves of volume and pressure of the airbag as well as the displacement, velocity and acceleration of the airdrop equipment were obtained.During the landing process, the maximum pressure of the airbag was 0.198 MPa, and the landing impact acceleration peak value of the airdrop equipment was 175 m/s2（17.9g）. The biggest impact overload of the airdrop equipment was 17.9g, and the maximum overload Amaxof the equipment was smaller than the allowed overload of 20 g, meeting the performance requirements. The airbag internal pressure peak value was important to the design of the airbag, with the airbag peak pressure of 0.198 MPa as the reference standard, it should be ensured that the airbag could bear the corresponding peak pressure in respect of airbag material selection and airbag processing, in order to avoid buffer balloon burst.