Structural Engineering and Mechanics

  • 제20권4호
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  • Pages.435-450
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  • 2005
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Dynamic instability of functionally graded material plates subjected to aero-thermo-mechanical loads

  • Prakash, T. (Department of Applied Mechanics, Indian Institute of Technology Delhi) ;
  • Ganapathi, M. (FEA Group, Institute of Armament Technology)
  • 투고 : 2004.10.21
  • 심사 : 2005.04.15
  • 발행 : 2005.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

Here, the dynamic instability characteristics of aero-thermo-mechanically stressed functionally graded plates are investigated using finite element procedure. Temperature field is assumed to be a uniform distribution over the plate surface and varied in thickness direction only. Material properties are assumed to be temperature dependent and graded in the thickness direction according to simple power law distribution. For the numerical illustrations, silicon nitride/stainless steel is considered as functionally graded material. The aerodynamic pressure is evaluated based on first-order high Mach number approximation to the linear potential flow theory. The boundaries of the instability region are obtained using the principle of Bolotin's method and are conveniently represented in the non-dimensional excitation frequency-load amplitude plane. The variation dynamic instability width is highlighted considering various parameters such as gradient index, temperature, aerodynamic and mechanical loads, thickness and aspect ratios, and boundary condition.

키워드

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피인용 문헌

  1. Parametric instability of functionally graded beams with an open edge crack under axial pulsating excitation vol.93, pp.7, 2011, https://doi.org/10.1016/j.compstruct.2011.01.019
  2. Finite element analysis of functionally graded plates for coupling effect of extension and bending vol.45, pp.1, 2010, https://doi.org/10.1007/s11012-009-9225-z
  3. DYNAMIC STABILITY CHARACTERISTICS OF FUNCTIONALLY GRADED PLATES UNDER ARBITRARY PERIODIC LOADS vol.13, pp.06, 2013, https://doi.org/10.1142/S0219455413500260
  4. Dynamic characteristics of functionally graded material sandwich plates in thermal environments vol.24, pp.2, 2017, https://doi.org/10.1080/15376494.2015.1124949
  5. Parametric resonance of composite skew plate under non-uniform in-plane loading vol.55, pp.2, 2015, https://doi.org/10.12989/sem.2015.55.2.435
  6. Elasticity solutions for a uniformly loaded annular plate of functionally graded materials vol.30, pp.4, 2005, https://doi.org/10.12989/sem.2008.30.4.501