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Dynamical stress distribution analysis of a non-uniform cross-section beam under moving mass

Ahmadian, M. T ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2006-15429
  3. Publisher: American Society of Mechanical Engineers (ASME) , 2006
  4. Abstract:
  5. One of the engineers concern in designing bridges and structures under moving load is the uniformity of stress distribution. In this paper the analysis of a variable cross-section beam subjected to a moving concentrated force and mass is investigated. Finite element method with cubic Hermitian interpolation functions is used to model the structure based on Euler-Bernoulli beam and Wilson-⊖ direct integration method is implemented to solve time dependent equations. Effects of cross-section area variation, boundary conditions, and moving mass inertia on the deflection, natural frequencies and longitudinal stresses of beam are investigated. Results indicates using a beam of parabolically varying thickness with constant mass can decrease maximum deflection and stresses along the beam while increasing natural frequencies of the beam. The effect of moving mass inertia of moving load is found to be significant at high velocity. Copyright © 2006 by ASME
  6. Keywords:
  7. Boundary conditions ; Deflection (structures) ; Finite element method ; Integration ; Interpolation ; Movable bridges ; Natural frequencies ; Hermitian interpolation ; Longitudinal stresses ; Moving load ; Moving mass inertia ; Stress concentration
  8. Source: 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006, Chicago, IL, 5 November 2006 through 10 November 2006 ; 2006 ; 10716947 (ISSN); 0791837904 (ISBN); 9780791837900 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2006/47683/1657/322936