基于蒙特卡罗方法的飞行过载超越数模拟技术  

Simulation Method for Cumulative Frequency of Acceleration Based on Monte Carlo Method

作　　者：郭俊辰 冯建民[1,2] Guo Junchen;Feng Jianmin(Aircraft Strength Research Institute of China,Xi′an710065,Shaanxi,China;Key Laboratory of Full-scale Aircraft of Aviation Science and Technology,Xi′an710065,Shaanxi,China)

机构地区：[1]中国飞机强度研究所,陕西西安710065 [2]全尺寸飞机航空科技重点实验室,陕西西安710065

出　　处：《工程与试验》2023年第3期6-9,共4页Engineering and Test

摘　　要：过载超越数曲线是疲劳载荷谱编制的基础,依据指定过载下超越数分布规律及超越数曲线概率密度函数,建立了一种飞行过载超越数曲线族的蒙特卡罗抽样模型。通过特征参数的选取和设定,可由此模型抽样得到过载数据。对抽样产生的过载数据的分析表明,其统计特征与模型设定值一致性良好,说明该模型能够较真实地模拟飞行过载数据。Nowadays,cumulative frequency of acceleration is the basis of fatigue load spectrum compilation.In this paper,a Monte Carlo model of flight cumulative frequency of acceleration curves is established based on the specified cumulative frequency of acceleration distribution function and probability density function of the curve.By selecting parameters,the simulates load data could be obtained by sampling.The comparison with the measured data also shows that the model can simulate the actual flight load data.

关 键 词：过载超越数 数理统计分析 蒙特卡罗方法 载荷谱 

分 类 号：V215.5[航空宇航科学与技术—航空宇航推进理论与工程]