New modeling for moment-rotation behavior of bolted endplate connections

Mohamadi Shoore, M. R ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1016/j.scient.2011.07.015
  3. Publisher: 2011
  4. Abstract:
  5. A new exponential model to depict the moment-rotation (M-θ) relationship of Bolted Endplate Connections (BEC) is proposed. The proposed model represents an approach to the prediction of M-O curves, taking into account the possible failure modes and the deformation characteristics of the connection elements. The presented model has three physical parameters, along with two curve-fitted factors. These physical parameters are generated from dimensional details of the connection, as well as the material properties. By employing simplified connection behavioral models to estimate the connection M-θ behavior, analytical expressions for evaluating major connection parameters, such as initial stiffness and ultimate moment, are derived. The M-O curves obtained by the model are compared with published connection tests and 3D FEM research. The model yields acceptable results in good agreement with actual connection behavior. Besides, comparison between the presented model and other existing equations, in prediction of the derived BECs M-θ curve, shows the reasonably accurate results of the proposed model
  6. Keywords:
  7. Endplate ; Semi-rigid ; Actual connections ; Analytical expressions ; Behavioral model ; Bolted connections ; Bolted end-plate ; Connection element ; Deformation Characteristics ; Endplates ; Exponential models ; Initial stiffness ; Material property ; Model yields ; Moment-rotation ; Physical parameters ; Moment-rotation curve ; Bolts ; Failure analysis ; Steel beams and girders ; Three dimensional ; Bolt ; Comparative study ; Stiffness ; Three-dimensional modeling ; Accuracy assessment ; Momentum ; Numerical model ; Rotation
  8. Source: Scientia Iranica ; Volume 18, Issue 4 A , August , 2011 , Pages 827-834 ; 10263098 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1026309811001295