Steel and Composite Structures

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Effect of crack location on buckling analysis and SIF of cracked plates under tension

  • Memarzadeh, Parham (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Mousavian, Sayedmohammad (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Ghehi, Mohammad Hosseini (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Zirakian, Tadeh (Department of Civil Engineering and Construction Management, California State University)
  • Received : 2019.10.13
  • Accepted : 2020.02.17
  • Published : 2020.04.25
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Abstract

Cracks and defects may occur anywhere in a plate under tension. Cracks can affect the buckling stability performance and even the failure mode of the plate. A search of the literature reveals that the reported research has mostly focused on the study of plates with central and small cracks. Considering the effectiveness of cracks on the buckling behavior of plates, this study intends to investigate the effects of some key parameters, i.e., crack size and location as well as the plate aspect ratio and support conditions, on the buckling behavior, stress intensity factor (SIF), and the failure mode (buckling or fracture) in cracked plates under tension. To this end, a sophisticated mathematical code was developed using MATLAB in the frame-work of extended finite element method (XFEM) in order to analyze the buckling stability and collapse of numerous plate models. The results and findings of this research endeavor show that, in addition to the plate aspect ratio and support conditions, careful consideration of the crack location and size can be quite effective in buckling behavior assessment and failure mode prediction as well as SIF evaluation of the cracked plates subjected to tensile loading.

Keywords

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