Structural Engineering and Mechanics

  • 제61권4호
  • /
  • Pages.551-561
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  • 2017
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

An approximate spectral element model for the dynamic analysis of an FGM bar in axial vibration

  • Lee, Minsik (Department of Mechanical Engineering, Inha University) ;
  • Park, Ilwook (Department of Mechanical Engineering, Inha University) ;
  • Lee, Usik (Department of Mechanical Engineering, Inha University)
  • 투고 : 2016.06.28
  • 심사 : 2017.01.18
  • 발행 : 2017.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

As FGM (functionally graded material) bars which vibrate in axial or longitudinal direction have great potential for applications in diverse engineering fields, developing a reliable mathematical model that provides very reliable vibration and wave characteristics of a FGM axial bar, especially at high frequencies, has been an important research issue during last decades. Thus, as an extension of the previous works (Hong et al. 2014, Hong and Lee 2015) on three-layered FGM axial bars (hereafter called FGM bars), an enhanced spectral element model is proposed for a FGM bar model in which axial and radial displacements in the radial direction are treated more realistic by representing the inner FGM layer by multiple sub-layers. The accuracy and performance of the proposed enhanced spectral element model is evaluated by comparison with the solutions obtained by using the commercial finite element package ANSYS. The proposed enhanced spectral element model is also evaluated by comparison with the author's previous spectral element model. In addition, the effects of Poisson's ratio on the dynamics and wave characteristics in example FGM bars are numerically investigated.

키워드

과제정보

연구 과제 주관 기관 : Inha University

참고문헌

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