文章采用ALE流固耦合方法，研究探空火箭盘缝带伞充气过程的动力学特性。应用Patran软件进行结构建模，并利用LS-DYNA有限元分析软件，对盘缝带伞模型在无限质量情况下进行充气过程的数值仿真模拟；计算得到了降落伞的充气时间和投影面积及阻力系数变化的规律，还获得了结构、流场动态变化，并用高塔分离试验验证计算结果。本文的建模方法与数值结果对盘缝隙带伞的设计与弹道分析有一定的参考意义。%This paper describes the sounding rocket of Disk-Gap-Band parachute inflation dynamics behavior using the ALE fluid structure interaction techniques. The models were developed using the Patran,and were on the basis of the numerical simulation of the DGB parachute inflation process in the LS-DYNA. The analysis result by the numerical simulation of the parachute inflation time,projection area,drag coefficient,and dynamics of the structure and fluid field was in agreement with the flight result. The studies offered a reference for design the DGB parachute and analysis the trajectory in future.
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