A Damage Identification Numerical Model Based on the Sensitivity of Orthogonality Conditions and Least Squares Techniques
نویسنده
چکیده
This paper presents a numerical model for damage identification of composite structures. The model is based on the orthogonality conditions sensitivities of the damaged and undamaged structures mode shapes and relies on a discretisation by finite elements. The damage is directly related to the stiffness reduction of the damaged element. A study on the use of eigenvector sensitivities for damage identification and the influence of measurements errors and noise in the modal data is also presented. The model is applied to a laminated rectangular plate, free in space and the efficiency of the numerical tools used to solve the defined set of equations is discussed.
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