International journal of steel structures (국제강구조저널)

Korean Society of Steel Construction (한국강구조학회)
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Buckling Strength Increment of Curved Panels Due to Rotational Stiffness of Closed-Section Ribs Under Uniaxial Compression

  • Andico, Arriane Nicole P. (Department of Civil Engineering, Hanbat National University) ;
  • Park, Yong-Myung (Department of Civil Engineering, Pusan National University) ;
  • Choi, Byung H. (Department of Civil Engineering, Hanbat National University)
  • Received : 2017.12.14
  • Accepted : 2018.07.30
  • Published : 2018.11.30
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Abstract

Recently, there have been studies about the increasing effect on the local plate buckling strength of flat plates when longitudinally stiffened with closed-section ribs and an approximate solution to quantitatively estimate these effects were suggested for flat plates. Since there are few studies to utilize such increasing effect on curved panels and a proper design method is not proposed, thus, this study aims to numerically evaluate such effect due to the rotational stiffness of closed-section ribs on curved panels and to propose an approximate method for estimating the buckling strength. Three-dimensional finite element models were set up using a general structural analysis program ABAQUS and a series of parametric numerical analyses were conducted in order to examine the variation of buckling stresses along with the rotational stiffness of closed-section ribs. By using a methodology that combine the strength increment factor due to the restraining effect by closed-section ribs and the buckling coefficient of the panel curvature, the approximate solutions for the estimation of buckling strength were suggested. The validity of the proposed methods was verified through a comparative study with the numerical analysis results.

Keywords

Acknowledgement

Supported by : Korea Agency for Infrastructure Technology Advancement

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  1. Rotational Stiffness Requirements of Closed-Section Stiffeners for Buckling Strength Increment of Stiffened Plates Under Uniaxial Compression vol.19, pp.6, 2018, https://doi.org/10.1007/s13296-019-00240-4