中国机械工程2025，Vol.36Issue(11)：2501-2508,8.DOI:10.3969/j.issn.1004-132X.2025.11.004
基于最优伪维格纳-维尔分布方法的载荷谱编辑研究
Research on Load Spectrum Editing Based on Optimal Pseudo Wigner-Ville Distribution Method
摘要
Abstract
To improve the quality of load spectrum editing,this paper utilized the PWVD method to edit the load spectrums.According to the principle of the minimum clustering metric parameter,the opti-mal PWVD matrix for the load spectrum was determined,and the instantaneous energy distributions of the load spectrums were calculated,which was used to delete small damage loads and generate a compressed load spectrum.The results show that the edited load spectrum based on the optimal PWVD method is con-sistent with the original load spectrum calculation results in terms of statistical parameters,power spectral density,rain flow count and fatigue simulation.The compressions of the load spectrum(Y-direction)edited by PWVD,Wigner-Ville distribution(WVD),S transform and short time Fourier transform are as 28.21%,15.02%,19.15%and 15.79%,respectively.The predicted life of the edited load spectrum is the same as that of the original load.Therefore,the method of utilizing the optimal PWVD to edit the load spectrum has the potential for applications in accelerating the fatigue durability analysis of vehicle components.关键词
载荷谱编辑/时频变换/伪维格纳-维尔分布/疲劳分析Key words
load spectrum editing/time-frequency conversion/pseudo Wigner-Ville distribution(PWVD)/fatigue analysis分类
交通工程引用本文复制引用
姚凌云,杨植顺,李丽,林勇杰..基于最优伪维格纳-维尔分布方法的载荷谱编辑研究[J].中国机械工程,2025,36(11):2501-2508,8.基金项目
国家自然科学基金(52175121) （52175121）
