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在火星探测任务中,盘缝带伞对航天器在低密度大气条件下的减速起到了重要作用。文章采用ProE软件进行几何建模;利用Hyperwork软件进行伞衣有限元建模及前处理;利用LS-DYNA软件的任意拉格朗日–欧拉方法着重研究了径向加强带细化结构对于盘缝带伞无限质量下,流固耦合仿真结果的影响。通过仿真研究发现,在考虑径向加强带细化结构后,缩比的盘缝带伞的阻力系数值与实际试验结果相近,伞衣外形、伞衣摆角与实际试验结果更为接近。此外,考虑径向加强带后,伞衣应力的仿真结果也与真实物理现象更为贴近。文章的建模方法及仿真结果对盘缝带伞的设计与仿真验证具有一定的参考价值。
During the Mars mission, the disk-suture umbrella played an important role in spacecraft decelerations under low-density atmospheric conditions. The article uses ProE software to do geometric modeling. Hyperwork software is used to model and preprocess the umbrella canopy. With the arbitrary Lagrange-Euler method of LS-DYNA software, The Influence of the Slab Umbrella on the Infinite Mass and the Fluid - Solid Coupling Simulation Results. The simulation results show that after considering the radial strengthening structure, the coefficient of drag coefficient of the contracted disk-sutured umbrella is similar to the actual test results. The shape of the umbrella-shaped garment and the umbrella-arm swinging angle are closer to the actual experimental results. In addition, the simulation results of the stress of umbrella canopy are also closer to the real physical phenomenon after considering the radial reinforcement band. The modeling method and the simulation results of the article have certain reference value for the design and simulation verification of the tape suture umbrella.