基于离散元方法的重力流过程与飞机着陆荷载模拟分析

Simulation Analysis of Gravity Flow Process and Aircraft Landing Load Based on Discrete Element Method

飞机滑行状态下确定其对机场跑道的动力作用是分析场道工作状态的关键性问题。与常规交通荷载不同,飞机在着陆至滑行的过程中,由于升力的作用,飞机与场道的接触压力实时发生变化。为此,利用离散元方法,设计加载沙漏,通过对比分析研究沙漏重力加载与飞机着陆荷载的关系。研究表明,通过调节漏斗填筑物的重量和加载过程,漏斗荷载可对飞机着陆荷载进行模拟与分析。

It is a key problem to determine the dynamic action of the aircraft on the runway in the taxiing state.Different from the conventional traffic load,the contact pressure between the aircraft and the runway changes in real time due to the lift force during the landing to taxiing.Therefore,the discrete element method is used to simulate the loading hourglass,and the relationship between the gravity loading of the hourglass and the landing load is studied through comparative analysis.The results show that the loading of aircraft landing can be simulated and analyzed by adjusting the weight and loading process of the filler.