STRUCTURAL DAMAGE IDENTIFICATION OF PLATE STRUCTURES BASED ON FREQUENCY RESPONSE FUNCTION AND NATURAL FREQUENCIES

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ESFANDIARI A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF STRUCTURAL ENGINEERING AND GEOTECHNICS Year:2011 | Volume:1 | Issue:PRI. NO. 2 Page(s): 11-15

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Information Journal Paper

Title

STRUCTURAL DAMAGE IDENTIFICATION OF PLATE STRUCTURES BASED ON FREQUENCY RESPONSE FUNCTION AND NATURAL FREQUENCIES

Author(s)

ESFANDIARI A. | Issue Writer Certificate

Keywords

DAMAGE

STRUCTURE

PLATE

FREQUENCY RESPONSE FUNCTION

NATURAL FREQUENCIES

Abstract

In this paper, a structural DAMAGE identification method (SDIM) is developed for PLATE-like STRUCTUREs. This method is derived using dynamic equation of unDAMAGEd/DAMAGEd PLATE, in which local change in flexural rigidity is characterized utilizing a DAMAGE distribution function. The SDIM requires to modal data in the intact state and frequency response of DAMAGE state where most of vibration based DAMAGE identification techniques requires to modal data in both states. Change of mode shapes of DAMAGEd PLATE are approximated as a linear combination of mode shapes of intact PLATE and are considered in dynamic equation of DAMAGEd PLATE. Constant Coefficients of linear combination have been evaluated using perturbed equation of motion and the DAMAGE distribution function. Two strategies for making the inverse problem DAMAGE identification are introduced in connection with DAMAGE the present SDIM: (1) by using sensitivity of NATURAL FREQUENCIES and (2) by using FRF-data, a sufficient number of equations can be derived to detect magnitude and location of DAMAGE. The feasibility of presented method is validated through some numerically simulated DAMAGE identification test taking into account random noise in FRF-data.

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APA: Copy

ESFANDIARI, A.. (2011). STRUCTURAL DAMAGE IDENTIFICATION OF PLATE STRUCTURES BASED ON FREQUENCY RESPONSE FUNCTION AND NATURAL FREQUENCIES. JOURNAL OF STRUCTURAL ENGINEERING AND GEOTECHNICS, 1(PRI. NO. 2), 11-15. SID. https://sid.ir/paper/339374/en

Vancouver: Copy

ESFANDIARI A.. STRUCTURAL DAMAGE IDENTIFICATION OF PLATE STRUCTURES BASED ON FREQUENCY RESPONSE FUNCTION AND NATURAL FREQUENCIES. JOURNAL OF STRUCTURAL ENGINEERING AND GEOTECHNICS[Internet]. 2011;1(PRI. NO. 2):11-15. Available from: https://sid.ir/paper/339374/en

IEEE: Copy

A. ESFANDIARI, “STRUCTURAL DAMAGE IDENTIFICATION OF PLATE STRUCTURES BASED ON FREQUENCY RESPONSE FUNCTION AND NATURAL FREQUENCIES,” JOURNAL OF STRUCTURAL ENGINEERING AND GEOTECHNICS, vol. 1, no. PRI. NO. 2, pp. 11–15, 2011, [Online]. Available: https://sid.ir/paper/339374/en

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