A finite element analysis of idealized damage in beam structures

被引：1
|
作者：
Alnefaie, KA [1 ]
机构：
[1] King Abdulaziz Univ, Coll Engn, Dept Mech Engn, Jeddah 21589, Saudi Arabia
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2004年 / 218卷 / 09期
关键词：
beam; modal analysis; modal moment; damage detection; vibrations;
D O I：
10.1243/0954406041991251
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The strain energy damage index (SEDI) and a nominally similar parameter called SED12 are reported to be insensitive to the magnitude of the underlying damage in beams, although they do help to locate the damage itself. A new damage-sensitive parameter, the modal moment index (MMI), is introduced. It is shown that the MMI also 'jumps' at the location of damage in the beam. In addition, it is established that the magnitude of the MMI is closely related to the decrease in relative modulus. It is concluded hence that the MMI seems to be a damage-sensitive parameter with potential for application in experimental modal analysis.
引用
收藏
页码：921 / 929
页数：9
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