机电工程技术2025，Vol.54Issue(16)：24-28,5.DOI:10.3969/j.issn.1009-9492.2024.00156
不同孔轴装配预应力下托辊结构振动特性分析
Vibration Characterization of Roller Structures under Prestressing with Different Hole Shaft Assembly
摘要
Abstract
Aiming at the complex structure of the idler rollers assembly process produces different pre-stress to change the vibration characteristics of the idler rollers,seriously affecting the life of the rollers or even fault caused by the premature failure,the influence law of the pre-stress on the vibration modal characteristics of the idler rollers by the hole-shaft assembly is analyzed by combining numerical simulation and experiment.First,the stiffness equation of the roll connection considering the assembly stress hardening matrix is established and the relationship between the assembly prestress and the system intrinsic frequency is solved.Then,based on the idler rollers finite element model through numerical simulation to analyze the first two orders of modal frequency variation rules of the idler rollers under high prestressing and low prestressing assembly.Finally,to verify the accuracy of the numerical simulation,the experimental modal analysis is performed by force hammer hammering method and compared with the numerical simulation results.The experimental results show that the first and second order modal frequency errors are 0.60%and-0.77%,respectively,and the calculation results are more accurate.The study provides some reference for the determination of prestress and vibration characterization of assemblies with hole-shaft fits.关键词
模态分析/装配体预应力/运输机械/托辊装备Key words
modal analysis/assembly prestressing/transportation machinery/roller equipment分类
矿业与冶金引用本文复制引用
邹波,杨景云,傅荣,邹宇,盛腾..不同孔轴装配预应力下托辊结构振动特性分析[J].机电工程技术,2025,54(16):24-28,5.基金项目
湖南省自然科学基金(2023JJ30254) （2023JJ30254）
湖南省教育厅优秀青年项目(22B0495) （22B0495）
海军装备"十四五"预研项目(3020402030301) （3020402030301）
中央引导地方科技发展项目(2022ZYT025) （2022ZYT025）
