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由于高原的空气密度、大气压力等与平原有较大差异,所以有必要对气囊系统的缓冲性能进行研究.由于空投中不可控因素的影响,采用实验方式进行空投设备落地过程的研究难以得到有效的结果.而且,由于实验方式花费较高,采用仿真方式具有较大优势.采用有限元方法,结合气体热力学理论,建立重型空投设备和缓冲气囊系统的有限元模型,并结合实验数据进行了验证.简要分析了空投设备落地缓冲过程的规律,进一步计算了高原条件下气囊系统的缓冲过程特点,研究结果对气囊系统的优化和设备结构改进设计具有一定的参考价值.
It is necessary to study the cushioning performance of the airbag system due to the difference in air density and atmospheric pressure between the plateau and the plains.Because of the uncontrollable factors in the airdropping, it is difficult to study the landing process of the airdropping equipment by the experimental method Moreover, due to the high cost of the experiment, it is more advantageous to adopt the simulation method.Using the finite element method and the gas thermodynamics theory, the finite element model of the heavy-duty airdrop equipment and buffer airbag system is established and verified with the experimental data This paper briefly analyzes the law of the cushioning process of airdropping equipment and further calculates the characteristics of cushioning process of the airbag system under the condition of plateau. The research results have some reference value for the optimization of the airbag system and the design of the equipment structure.