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基于有限元方法建立减速伞充气模型。针对末敏弹减速装置采用的平面圆伞,利用粒子-弹簧系统构建减速伞三维模型;考虑了伞衣结构内力和内部气流运动基础上,建立充气过程的粒子节点动力学模型,并验证此模型与实验结果基本一致。该方法具有对物理试验依赖性小的特点,适合新型末敏弹减速伞的初步设计。
Establishment of Accelerator Inflatable Model Based on Finite Element Method. A three-dimensional model of deceleration parachute was constructed by using the particle-spring system, and the dynamic model of the particle node of the inflatable process was established based on the internal forces and internal airflow movements of the parachute structure. The model was validated by the particle-spring system. The experimental results are basically the same. The method has the characteristics of small dependence on physical experiments, and is suitable for the preliminary design of a new type of terminal-sensitive parachute parachute.