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논문 기본 정보

자료유형
학술저널
저자정보
Luo, Tzuo-Liang (Institute of Mechanical Engineering, National Chung-Hsing University) Wu, James Shih-Shyn (Institute of Mechanical Engineering, National Chung-Hsing University) Hung, Jui-Pin (Institute of Precision Machinery and Manufacturing Technology, National chin-Yi Institute of Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제23권 제1호
발행연도
2006.1
수록면
1 - 13 (13page)

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Structural cracks may cause variations in structural stiffness and thus produce bilinear vibrations to structures. This study examines the dynamic behavior of structures with breathing cracks. A generalized algorithm based on the finite element method and bilinear theory was developed to study the influence of a breathing crack on the vibration characteristic. All the formulae derived in the time domain were applied to estimate the period of the overall bilinear motion cycle, and the contact effect was considered in the calculations by introducing the penetration of the crack surface. Changes in the dynamic characteristics of cracked structures are investigated by assessing the variation of natural frequencies under different crack status in either the open or closed modes. Results in estimation with vibrational behavior variation are significant compared with the experimental results available in the literature as well as other numerical calculations.

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