中国机械工程Issue(4)：512-517,6.DOI:10.3969/j.issn.1004132X.2015.04.016
初始安装应力对管道固有频率的影响分析及试验验证
Analysis and Experimental Verification to Effects of Pipe Initial Installation Stress on Pipe’s Natural Frequencies
摘要
Abstract
This paper investigated the effects of the pipe initial installation stress on pipe’s natural frequencies.Simulation analyses on catheter-free assembling stress,smaller installation stress,larger installation stress were carried out by using ANSYS in order to find the effects of the pipe initial in-stallation stress on pipe’s natural frequencies.Then a pipeline test-bed was constructed,which was simulated the initial installation stress.The experimental modal test analysis was conducted on the pipe through the hammer method,and the results were compared with those calculated by ANSYS.Fi-nally,modal test on the aircraft pipe was completed,and the results show that initial installation stress have certain influence on pipe’s natural frequencies,which provides important methods and ideas for the future study of monitoring system for pipe installation stress.关键词
管道/安装应力/有限元分析/固有频率/模态试验Key words
pipe/installation stress/finite element analysis/natural frequency/modal test分类
机械制造引用本文复制引用
程小勇,陈果,刘明华,郑其辉,罗云,侯民利,蒲柳..初始安装应力对管道固有频率的影响分析及试验验证[J].中国机械工程,2015,(4):512-517,6.基金项目
国家自然科学基金资助项目(61179057) （61179057）
成都飞机工业(集团)有限责任公司资助项目 （集团）
