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Title |
Forced-Vibration-Based Identification of Stiffness Reduction Distribution in Thin Plates with an Arbitrary Damage Shape
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Keywords |
임의의 손상 형태 ; 손상 규명 ; 손상 탐지 기법 ; 유한요소법 ; 강제진동 ; Arbitrary damage shapes ; Damage identification ; Damage search technique ; Finite element method ; Forced vibration |
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Abstract |
This study deals with a method to identify structural damage using the combined finite element method (FEM) and the advanced damage search technique. The novelty of this study is the application of plates with arbitrary damage shapes and their response due to the anomalies in a structure subjected to impact loading. The technique described in this paper may allow us not only to detect the stiffness distribution of the damaged areas but also to find locations and the extent of damage. To demonstrate the feasibility of the method, the algorithm is applied to a steel thin plate structures with an arbitrary damage shape. The results demonstrate the excellencies of the method from the standpoints of computation efficiency as well as its ability to investigate the arbitrary stiffness reductions.
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