在降落伞展开过程的数值模拟中,为解决因流场网格畸变需要流场网格重构,而造成大量计算资源消耗的问题。提出了以SPH粒子代替传统网格来描述流场的计算模型,伞衣结构仍采用有限元网格描述,通过二者之间相互穿插实现最终的模型装配,并采用基于罚函数的接触算法实现耦合计算。获得了开伞过程中伞衣结构和流场的动态变化过程。仿真结果表明,开伞后伞顶塌陷和随后出现的“呼吸”现象与风洞试验结果基本一致。验证了SPH方法可以用于降落伞开伞过程计算,为充气织物的数值研究提供了新的参考。 In the numerical simulation of the parachute deployment process, a large amount of computing resource consumption is caused to solve the grid reconfiguration due to the grid distortion of the flow field. The calculation model of flow field is proposed, which uses SPH particle instead of the traditional grid. The structure of umbrella shed is still described by finite element grid. The final model assembly is realized through the interpenetration between the two, and the contact algorithm based on penalty function Coupling calculation. Obtained during the parachute umbrella structure and flow field during the dynamic process of change. The simulation results show that the umbrella collapse and subsequent “breathing” phenomenon after the parachute are basically consistent with the wind tunnel test results. It is verified that the SPH method can be used to calculate the parachute parachute process and provide a new reference for the numerical study of inflatable fabric.