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논문 기본 정보

자료유형
학술저널
저자정보
Xia, Yong (Department of Civil & Structural Engineering, The Hong Kong Polytechnic University) Weng, Shun (Department of Civil & Structural Engineering, The Hong Kong Polytechnic University) Xu, You-Lin (Department of Civil & Structural Engineering, The Hong Kong Polytechnic University) Zhu, Hong-Ping (School of Civil Engineering & Mechanics, Huazhong University of Science and Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제36권 제1호
발행연도
2010.1
수록면
37 - 55 (19page)

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For large-scale structures, the calculation of the eigensolution and the eigensensitivity is usually very time-consuming. This paper develops the Kron's substructuring method to compute the first-order derivatives of the eigenvalues and eigenvectors with respect to the structural parameters. The global structure is divided into several substructures. The eigensensitivity of the substructures are calculated via the conventional manner, and then assembled into the eigensensitivity of the global structure by performing some constraints on the derivative matrices of the substructures. With the proposed substructuring method, the eigenvalue and eigenvector derivatives with respect to an elemental parameter are computed within the substructure solely which contains the element, while the derivative matrices of all other substructures with respect to the parameter are zero. Consequently this can reduce the computation cost significantly. The proposed substructuring method is applied to the GARTEUR AG-11 frame and a highway bridge, which is proved to be computationally efficient and accurate for calculation of the eigensensitivity. The influence of the master modes and the division formations are also discussed.

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