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Damage-plasticity model for mixed hinges in steel frames

Kazemi, M. T ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jcsr.2011.03.010
  3. Publisher: 2011
  4. Abstract:
  5. A damage-plasticity based mixed axial-shear-flexural (PVM) link element for the inelastic analysis of frames is introduced in this paper. The multi-surfaces yield concept is utilized in the definition of the element. The yield surfaces are defined in deformation space and interaction of axial-shear-flexural deformations is considered by defining non-rectangular yield surfaces. The element is capable of considering damage and post-peak softening behavior. The analytical results of introduced element are verified by existing experimental results of steel beam to column connection and it is indicated that the analytical results have reasonable agreement with the test results. Nonlinear dynamic analyses are performed on moment frames with the verified element in two cases: with and without consideration of damage. The results exhibit that damage consideration considerably changes the results. The effect of consideration of the interaction between shear deformation and flexural deformation at the ends of beams of frames under lateral and gravity loads is also investigated. The results for the long beams show that, although in the stage of small plastic deformations the shear-flexural interaction is negligible, for the extensive plastic deformation near the failure point, it could be decisive
  6. Keywords:
  7. Mixed link element ; Damage-plasticity ; Deformation space ; Mixed link element ; Multi-surface plasticity ; Shear-flexural interaction ; Softening ; Plastic deformation ; Plasticity ; Shear flow
  8. Source: Journal of Constructional Steel Research ; Volume 67, Issue 8 , 2011 , Pages 1272-1281 ; 0143974X (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0143974X11000769