Structural Engineering and Mechanics

  • 제39권4호
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  • Pages.541-558
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  • 2011
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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

On eigenvalue problem of bar structures with stochastic spatial stiffness variations

  • Rozycki, B. (Voivodeship Roads Administration in Opole) ;
  • Zembaty, Z. (Faculty of Civil Engineering, The Opole University of Technology)
  • 투고 : 2010.09.03
  • 심사 : 2011.05.25
  • 발행 : 2011.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents an analysis of stochastic eigenvalue problem of plane bar structures. Particular attention is paid to the effect of spatial variations of the flexural properties of the structure on the first four eigenvalues. The problem of spatial variations of the structure properties and their effect on the first four eigenvalues is analyzed in detail. The stochastic eigenvalue problem was solved independently by stochastic finite element method (stochastic FEM) and Monte Carlo techniques. It was revealed that the spatial variations of the structural parameters along the structure may substantially affect the eigenvalues with quite wide gap between the two extreme cases of zero- and full-correlation. This is particularly evident for the multi-segment structures for which technology may dictate natural bounds of zero- and full-correlation cases.

키워드

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