한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제46권2호
  • /
  • Pages.67-75
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  • 2004
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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Dynamic Behavior of Plane Parabolic Arches with Initial Deflections

  • 조진구 (전남대학교 농과대학, 농업과학기술 연구소) ;
  • 박근수 (전남대학교 대학원, 금광기업(주))
  • 발행 : 2004.01.01
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초록

This study aims to investigate the dynamic behaviour of a parabolic arch with initial deflection by using the elasto-plastic finite element model where the von-Mises yield criteria have been adopted. The initial deflection of arch was assumed by the high order polynomial of ${\omega}_i$ = ${\omega}_o$${(1-{(2x/L)}^m)}^n$) and the sinusoidal profile of ${\omega}_i$ = ${\omega}_o$$\sin$(n$\pi$x/L). Several numerical examples were tested considering symmetric initial deflection modes when the maximum initial deflection of an arch is fixed as L/500, L/1000, L/2000 or L/5000. The effects of polynomials order on the dynamic behavior of arch were not conspicuous. The most unfavorite dynamic response occurs when the maximum initial deflection varies from L/1000 to L/4000 if the initial deflection mode is represented by high order polynomials.

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참고문헌

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