|Table of Contents|

Structural Damage Identification Based on Minimum Rank Method(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2006年03期
Page:
37-
Research Field:
Publishing date:
2006-09-20

Info

Title:
Structural Damage Identification Based on Minimum Rank Method
Author(s):
ZHU Zi;  DONG Cong
Department of Civil Engineering, Tsinghua University, Beijing 100084, China
Keywords:
building structure;  structural damage identification;  minimum rank method;  modal force surplus
PACS:
TU311.2
DOI:
-
Abstract:
The existing problem of the structural damage identification based on the minimum rank method was studied. Authors discovered that the stiffness matrix would preserve the symmetry if the measured modal eigen vectors were mass orthogonal. Iterative correction algorithm to preserve sparsity of the stiffness matrix was proposed. An damage indicator was defined to determine the location of structural damage elements, and the proper testing modal modes used in the inverse computation could be selected accordingly. Numerical test results show that the improved method can locate and quantify the structural damage in truss structures precisely under considering the modal testing errors.

References:

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Memo

Memo:
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Last Update: 2006-09-20