摘要
降落伞充气过程是典型的流固耦合问题,具有复杂的耦合动力学行为。基于ANSYS/LS-DYNA软件的参数化设计语言和任意拉格朗日欧拉算法开发了适合于航空伞型降落伞充气展开过程的三维仿真系统;介绍了系统主要算法思想和基本组成结构;以某型开缝降落伞的充气过程为例,通过人机交互界面输入伞形、伞衣几何尺寸、流场几何尺寸、伞衣材料等系统参数,数值模拟了降落伞开伞过程,得到了开伞过载,伞衣3D外形变化等计算结果,验证了仿真系统的有效性和可行性。该仿真软件可应用于降落伞低速空投试验和风洞试验的模拟和技术验证。
dynamic Parachute inflation is a typical fluid-structure interaction problem, with sophisticated coupling ehaviors. Basing on the parametric design language and Arbitrary Lagrange Euler method within ANSYS/LS-DYNA finite element code, a simulation software for parachute inflation process is developed, the algorithm and construction of this software are introduced. Targeting on some type of slits parachute, the parachute type, parachute geometric size, flow geometric size and parachute material property are input through the interaction face, the opening process is simulated, and the opening loads as well as the 3D shape deformation are obtained,the results validate the efficiency and feasibility of this software. This simulation technique can be applied in simulation and technique verification for low speed airdrop test and wind tunnel test of parachute
出处
《系统仿真技术》
2013年第4期292-298,共7页
System Simulation Technology
基金
国家自然科学基金资助项目(51375486)
