|本期目录/Table of Contents|

[1]张杨,李国强.通用频率指纹库在固接梁损伤定位中的应用[J].建筑科学与工程学报,2005,22(04):40-44.
　ZHANG Yang,LI Guo-qiang.Application of universal bank of natural frequency indexes in damage location of beams with fixed ends[J].Journal of Architecture and Civil Engineering,2005,22(04):40-44.
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通用频率指纹库在固接梁损伤定位中的应用(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
22卷
期数:
2005年04期
页码:
40-44
栏目:
出版日期:
2006-12-20

文章信息/Info

Title:
Application of universal bank of natural frequency indexes in damage location of beams with fixed ends
作者:
张杨;李国强;
同济大学 土木工程学院,上海 200092
Author(s):
ZHANG Yang, LI Guo-qiang
School of Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
损伤定位;  自振频率;  固接梁;  频率指纹库;  损伤因子
Keywords:
damage location;  natural frequency;  beam with fixed end;  bank of frequency index;  damage factor
分类号:
U445.7
DOI:
-
文献标志码:
A
摘要:
从理论上推导了基于梁的自振频率数据进行损伤定位的基本原理,得出了一些梁的基于频率数据定义的动力参数(任意两阶频率变化比)仅是损伤位置的函数,而与损伤的程度无关的结论。随后在理论推导的基础上,重点研究了利用任意两阶频率变化比作为损伤定位的参数,建立了两端固接梁损伤定位通用频率指纹库,建立的过程中还考虑了损伤程度对指纹库的影响。最后通过两个数值算例,验证了该指纹库用于固接梁损伤定位的有效性和通用性,从而为工程中任意固接梁的损伤定位找到了一个标尺。
Abstract:
The theory of damage location of beams using data of natural frequencies was presented. Authors found out that several parameters of beams based on natural frequencies(ratio of changes in frequency, RCF)were only related to the damage location and uncorrelated to the extent of damages. After that, based on the theory of damage location, the way to establish a universal bank of natural frequency indexes for damage location of beams with fixed ends was presented, using the ratio of changes in frequency. The influences of the extent of damage were also discussed during the process. Finally, the effectiveness and universality of the bank were confirmed by two different numerical models of beams. Hence an approach for the damagelocation of beams with fixed ends was established.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2005-09-01
作者简介:张 杨(1981-),男,湖南岳阳人,工学硕士研究生.E-mail:zhangyang_81@163.com
更新日期/Last Update: 2006-12-20