Interaction and multiscale mechanics

  • 제3권4호
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  • Pages.343-363
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  • 2010
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  • 1976-0426(pISSN)
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  • 2092-6200(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Dynamic response of an elastic bridge loaded by a moving elastic beam with a finite length

  • Cojocaru, Eugenia C. (Linz Center of Mechtronics GmbH) ;
  • Irschik, Hans (Institute of Technical Mechanics, Johannes-Kepler University)
  • 투고 : 2010.08.08
  • 심사 : 2010.10.22
  • 발행 : 2010.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

The present paper is concerned with vibrations of an elastic bridge loaded by a moving elastic beam of a finite length, which is an extension of the authors' previous study where the second beam was modeled as a semi-infinite beam. The second beam, which represents a train, moves with a constant speed along the bridge and is assumed to be connected to the bridge by the limiting case of a rigid interface such that the deflections of the bridge and the train are forced to be equal. The elastic stiffness and the mass of the train are taken into account. The differential equations are developed according to the Bernoulli-Euler theory and formulated in a non-dimensional form. A solution strategy is developed for the flexural vibrations, bending moments and shear forces in the bridge by means of symbolic computation. When the train travels across the bridge, concentrated forces and moments are found to take place at the front and back side of the train.

키워드

참고문헌

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  1. Instance of hidden instability traps in intermittent transition of moving masses along a flexible beam vol.227, pp.4, 2016, https://doi.org/10.1007/s00707-015-1551-8
  2. Reliable dynamic analysis of an uncertain compound bridge under traffic loads vol.223, pp.8, 2012, https://doi.org/10.1007/s00707-012-0641-0
  3. On the parametric excitation of a Timoshenko beam due to intermittent passage of moving masses: instability and resonance analysis vol.226, pp.4, 2015, https://doi.org/10.1007/s00707-014-1240-z
  4. Mechanics and Model Based Control vol.83, pp.1662-0356, 2012, https://doi.org/10.4028/www.scientific.net/AST.83.85
  5. Time-frequency analysis of a coupled bridge-vehicle system with breathing cracks vol.5, pp.3, 2012, https://doi.org/10.12989/imm.2012.5.3.169