Structural Engineering and Mechanics

  • 제23권1호
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  • Pages.1-13
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  • 2006
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A generalized algorithm for the study of bilinear vibrations of cracked structures

  • 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)
  • 투고 : 2005.02.24
  • 심사 : 2006.01.23
  • 발행 : 2006.05.10
⟨ 이전 논문 다음 논문 ⟩

초록

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.

키워드

참고문헌

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피인용 문헌

  1. Fatigue crack growth, free vibrations, and breathing crack detection of aluminium alloy and steel beams vol.44, pp.7, 2009, https://doi.org/10.1243/03093247JSA527
  2. On the dynamics of a beam with switching crack and damaged boundaries vol.19, pp.1, 2013, https://doi.org/10.1177/1077546311428640
  3. Modal Analysis of Annular Plate with Crack and its Effect on Natural Frequency vol.813-814, pp.1662-7482, 2015, https://doi.org/10.4028/www.scientific.net/AMM.813-814.910
  4. Nonlinear Dynamic Analysis of a Cracked Rotor-Bearing System With Fractional Order Damping vol.8, pp.3, 2013, https://doi.org/10.1115/1.4023010