Initial Damage Detection Based on Elastic Modulus Randomness

Abstract:

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A damage detection method reflecting initial damage of the elastic structure is presented. It is based on the idea that the damage will decrease the structure stiffness. From eigenvalue issue, regard Poison ratio and elastic modulus as a constant and a random variable, respectively, and in terms of known data and a combination of the FEM, then equations solving random modulus of the undamaged and the damaged structure are obtained, respectively. Based on the element damage indicator, initial damage of the structure can be detected. At last, a five-storey shearing structure is simulated, and the results indicate that initial damage situation can be accurately calculated, and initial damage locations can be estimated based on the proposed method, which is simple and effective, and contributes to the application in Engineering.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

109-112

DOI:

10.4028/www.scientific.net/KEM.324-325.109

Citation:

F. S. Liu et al., "Initial Damage Detection Based on Elastic Modulus Randomness", Key Engineering Materials, Vols. 324-325, pp. 109-112, 2006

Online since:

November 2006

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Price:

$35.00

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