航空学报2025，Vol.46Issue(1)：114-128,15.DOI:10.7527/S1000-6893.2024.30821
基于ANCF和SPH的柔性降落伞流固耦合动力学仿真
Fluid-solid coupled dynamic simulations of flexible parachute based on ANCF and SPH
摘要
Abstract
For the dynamic problem of the coupled fluid-structure between the parachute and air flow,and compared with the classic method,the Absolute Nodal Coordinate Formulation(ANCF)can overcome the strong coupling prob-lem of elastic deformation and rigid deformation.In this paper,the method of ANCF is used to build up a mechanical model of flexible parachute rope and canopy.In addition,as the method of Smoothed Particle Hydrodynamics(SPH)can capture the fast-moving interface and free surface when the flow field is greatly deformed,SPH is adopted to simu-late the air flow field.The coupling effect between fluid particles and flexible structures is described through the spring-damping model.Fluid-structure coupling dynamics is then conducted to investigate the dynamic behaviours of the flex-ible parachute.Through the numerical examples,it is found that with the increase of the speed of the fluid,the effec-tive projected area of the parachute is decreased slightly,whereas the variation amplitude of the effective projected area is increased significantly.The findings of this paper are useful for the design of flexible parachutes.关键词
降落伞/流固耦合/绝对节点坐标方法/光滑粒子流方法/动力学Key words
parachute/fluid-structure coupling/absolute node coordinate formulation/smoothed particle hydrody-namics/dynamic分类
航空航天引用本文复制引用
李庆军,鲁媛媛,徐方暖,王博..基于ANCF和SPH的柔性降落伞流固耦合动力学仿真[J].航空学报,2025,46(1):114-128,15.基金项目
国家自然科学基金(12172282) （12172282）
航天进入减速与着陆技术实验室开放基金 （）
中央高校基本科研业务费专项资金 National Natural Science Foundation of China(12172282) （12172282）
Laboratory of Aerospace Entry,Descent and Landing Technology （）
Fundamental Research Funds for the Central Universities （）
