Structural Engineering and Mechanics

  • 제41권6호
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  • Pages.751-758
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  • 2012
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Locating a weakened interface in a laminated elastic plate

  • Zhu, J. (Department of Civil Engineering, Zhejiang University, Zijingang Campus) ;
  • Yang, J.S. (Department of Engineering Mechanics, University of Nebraska) ;
  • Chen, W.Q. (State Key Lab of CAD & CG, Zhejiang University, Zijingang Campus)
  • 투고 : 2011.03.08
  • 심사 : 2012.02.21
  • 발행 : 2012.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

We study thickness-shear (TSh) free vibrations of an unbounded, laminated elastic plate with three layers of different materials. One of the two interfaces is slightly weakened as described by the shear-lag model that allows the displacement to be discontinuous across the interface. A frequency equation is obtained from the linear theory of elasticity. A perturbation solution of the frequency equation is obtained from which the frequency shifts of TSh modes due to the weakened interface can be calculated. It is shown that the frequency shifts of TSh modes of different orders are different, and they satisfy different conditions when different interfaces are weakened. These conditions are obtained which can potentially be used as criteria for determining specifically which interface is weakened.

키워드

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피인용 문헌

  1. Effects of interface bonding on acoustic wave generation in an elastic body by surface-mounted piezoelectric transducers vol.60, pp.9, 2013, https://doi.org/10.1109/TUFFC.2013.2780
  2. Coupled Extensional and Flexural Motions of a Two-Layer Plate With Interface Slip vol.141, pp.2, 2019, https://doi.org/10.1115/1.4041512
  3. Extensional Waves in a Sandwich Plate With Interface Slip vol.137, pp.3, 2012, https://doi.org/10.1115/1.4029334