複合材積層板中の多重位置損傷の逐次領域絞り込み法を用いた効率的同定法の提案

概要

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This study is concerned with an effective damage identification method for composite laminated plates with multiple site damage using a successive iteration method of bounding domain. First we use a flexibility method to determine the subdomains of composite laminated plate which contain damage areas. The subdomains are subdivided into smaller subdomains using a successive iteration method of bounding domain, and finally we determine the areas of the multiple site damage. In order to reduce computational time and number of design variables, we use the domain decomposition finite element technique to get frequencies and mode shapes of the whole domain by assembling subdomain frequencies and subdomain mode shapes. For a numerical example, the damage identification is conducted for a composite laminated plate with multiple site damage. As the result, it is revealed that the present damage identification method is effective and computationally efficient.
社団法人日本航空宇宙学会の論文
2004-12-05