等强度梁弯曲特性分析  

Analysis of Bending Characteristics of an Equal Strength Beam

作　　者：王展 李亮 王龙[1] 王少成 朱奕帆 张颖 WANG Zhan;LI Liang;WANG Long;WANG Shaocheng;ZHU Yifan;ZHANG Ying(School of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232001,China;School of Mechanicsand Optoelectronic Physics,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001 [2]安徽理工大学力学与光电物理学院,安徽淮南232001

出　　处：《洛阳理工学院学报（自然科学版）》2023年第2期14-19,共6页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：国家自然科学基金(11902002,51705002);安徽省质量工程项目(2020XSXXKC149,S202110361198,S202210361197).

摘　　要：等强度梁在工程上应用广泛,探讨其振动特性具有重要意义。由于等强度梁的变截面特性,无法求解振动频率和模态的精确解。采用假设模态法、有限元仿真和实验测试的方法,求解了等强度悬臂梁弯曲振动特性,并对3种方法和结果进行了对比,研究表明等强度梁振动模态与等截面悬臂梁模态形状一致。Equal strength beams are widely used in engineering structures,so it is an important to study their vibration characteristics.However,the exact values of frequencies and mode shapes can not be derived due to the un-uniform property of cross-sections of the beam.By using the assumed-mode method,the finite element method and the experimental method respectively,the bending vibration characteristics of an equal strength beam are analyzed.Three different methods are compared.Results show that the vibration modeof equal strength beams conforms withthat of cross-sectionscantilever beam.

关 键 词：等强度梁 频率 振型 假设模态法 有限元 锤击实验 

分 类 号：TB123[理学—工程力学]