|Table of Contents|

Identification of Multi-Position Cracks in Structures Based on Finite Element Method(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2012年01期
Page:
39-45
Research Field:
物理学
Publishing date:

Info

Title:
Identification of Multi-Position Cracks in Structures Based on Finite Element Method
Author(s):
Lin Ying; Li Xueping
School of Civil Engineering,Central South University,Changsha 410075,China
Keywords:
damage sensitivity matrix; identification of structural crack element; formula of structural crack depth; finite element formulation; modal parameter
PACS:
TU312.3
DOI:
-
Abstract:
The connection between structural damage and modal parameter was derived and the identification of multi-position cracks in structures based on finite element method was obtained by using finite element expression of vibrating system＇s dynamic equation． By making use of damage sensitivity matrix，it is eligible to identify exact positions of structural cracks，and the crack depths in the meanwhile． This method is simple in calculation． This method is verified by means of numerical calculations． The results show that comparatively detailed division of the structural elements may improve the identification accuracy．

References:

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Memo

Memo:
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Last Update: 2013-03-11