软着陆气囊参数可行域分析及优化设计研究

为建立系统的缓冲气囊设计方法，首先基于能量守恒方程，建立缓冲气囊的解析分析模型，并通过试验及有限元仿真进行了验证；在此基础上，建立了基于解析模型的缓冲气囊设计参数可行域的初步确定方法；并在可行域中选择合理设计初值，将缓冲气囊的解析求解器与遗传算法相结合，开展了缓冲气囊的优化设计方法研究.研究分析表明，通过确定气囊设计参数的可行域，可快速得到合理的设计初值，随后通过对设计初值进行优化，耗费较短的时间即可完成气囊缓冲系统各个设计参数的联动设计，提高气囊的缓冲效率，整套设计方法合理快捷，对工程实际具有较高的参考价值.

Feasible Region Analysis and Optimum Design of Soft Landing Airbag

Based on the energy conservation principle and thermal dynamics equations, an analytical model of soft landing considering the elasticity of airbag fabric was proposed. Using this model, the feasible range of design parameters and the initial design parameters were determined. With the initial parameters, the genetic algorithm method was used to carry out the optimization of the airbag system. Comparative analysis shows that the feasible range method is suitable for the initial parameters design, and the genetic algorithm can easily obtain the global optimal solution based on the result of the feasible range method. These distinctive features inspired us to propose a multi-level optimization for a complex airbag cushioning system design, and this optimal method can take advantage of the two algorithms.