Vibrations of damaged 1D-3D multi-structures

被引：0

作者：

Aslanyan, Adolf G. ^{[1
]}

Dronka, Janusz ^{[2
]}

Mishuris, Gennady S. ^{[2
]}

Selsil, Ozgur ^{[3
]}

机构：

[1] Khimki, Druzhba St 5,Kv 355, R-141400 Moscow, Russia

[2] Rzeszow Univ Tech, Dept Math, Rzeszow, Poland

[3] Univ Liverpool, Dept Math Sci, Liverpool L69 7ZL, England

来源：

VIBRATION PROBLEMS ICOVP 2005 | 2007年 / 111卷

关键词：

multi-structures; partial damage; asymptotics; eigenfrequencies;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The objective of the paper is to study the vibrations of 1D-3D nondegenerate multistructures, which are partly damaged. Such an analysis is useful to quickly asses the condition of a structure which has been in use over a long period of time. We look at three different positions of damage: top, middle or bottom of one leg. We calculate six eigenfrequencies associated with rigid body motion of the 3D structure and derive simple analytical asymptotic formulae for these eigenfrequencies. Hence, we analyse the effect of weakening of a leg. Accuracy of the asymptotic formulae is also checked with 3D finite element computations.

引用

页码：45 / +

页数：2

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