摘要
基于拉格朗日——欧拉耦合方法,对某型飞机的水上迫降性能进行了仿真分析。采用Hypermesh软件建立飞机水上迫降的有限元模型,通过LS-DYNA软件对飞机水上迫降过程进行数值仿真。考虑不同初始角度、速度等入水条件,得到一系列飞机的重心过载及姿态变化的运动规律。通过对计算结果进行对比分析,得到了飞机最佳的入水条件以及运动规律,可为后续飞机结构强度设计以及水上迫降模拟试验提供参考。
Based on Lagrangrian/Eulerian coupling method, simulation analysis on ditching characteristics of an aircraft has been conducted. The finite-element aircraft ditching model is setup by adopting Hypermesh software,and numeric simulation on aircraft ditching has been accomplished via LS-DYNA software. With considerations on diving conditions as different initial angle, speed etc., the movement law of a series of aircraft C.G load and attitude changes has been attained. Based on the comparison analysis on calculated results, the best diving condition and movement law of the aircraft is resulted, which can provide the reference for simulation test for structure strength design and ditching of the successive aircraft.
出处
《教练机》
2016年第3期28-32,共5页
Trainer
关键词
仿真分析
水上迫降
流固耦合
有限元
Simulation analysis
Ditching
Fluid-solid coupling
Finite element
