压力容器2025，Vol.42Issue(11)：40-49,10.DOI:10.3969/j.issn.1001-4837.2025.11.005
三层U形GH3625波纹管动态特性及隔振研究
Study on dynamic characteristics and vibration isolation of three-layer U-shaped GH3625 bellows
摘要
Abstract
To address the issue of resonance damage in bellows often caused by an overemphasis on static design,a research method combining finite element analysis and experimental verification for three-layer U-shaped GH3625 bellows based on Ansys software was proposed.The influence laws of key structural parameters such as wall thickness,number of convolutions,convolution height,number of layers,and convolution pitch on the natural frequency of the bellows were analyzed,and the effect of thermo-mechanical coupling excitation on modal characteristics was further explored.The results show that the average error between the axial natural frequency calculated by the finite element model and theoretical formulas is approximately 6.3%;the natural frequency increases with the increase of wall thickness and number of layers,decreases with the increase of convolution height and number of convolutions,while the variation of convolution pitch has a weak influence on the frequency;thermo-mechanical coupling excitation significantly alters the natural frequency of the bellows.Combined with harmonic response,transient analysis,and vibration isolation tests,it was verified that the bellows possesses excellent vibration isolation performance.This research provides important references for the dynamic optimization design and resonance protection of bellows.关键词
波纹管/模态分析/耦合激励/隔振Key words
bellows/modal analysis/coupling excitation/vibration isolation分类
机械制造引用本文复制引用
岳琳,王旭,孙丹,袭文,于昊仟..三层U形GH3625波纹管动态特性及隔振研究[J].压力容器,2025,42(11):40-49,10.基金项目
国家自然科学基金项目(52274062) （52274062）
辽宁省教育厅基础研究项目(LJ242410148029) （LJ242410148029）
