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Effects of welding distortions and residual stresses on the ultimate strength of long rectangular plates under uniaxial compression

Authors
Journal
Marine Structures
0951-8339
Publisher
Elsevier
Publication Date
Volume
11
Issue
6
Identifiers
DOI: 10.1016/s0951-8339(98)00012-4
Keywords
  • Unstiffened Plates
  • Ultimate Compressive Strength
  • Elastic Large Deflection Analysis
  • Rigid–Plastic Analysis
  • Initial Welding Distortion Shape
  • Residual Stresses
Disciplines
  • Design

Abstract

Abstract The ultimate compressive strength of unstiffened plates is very important from the design and safety viewpoint. However, the ultimate compressive strength of these panels will depend quite significantly on the initial welding distortions and residual stresses. Currently, most of the researches concerning the effect of welding distortions concentrate only on the maximum initial distortion amplitude. However, many evidences indicate that the welding distortion shape could also affect the ultimate compressive strength significantly. In this paper, we adopt a combination of the elastic large deflection theory and the rigid-plastic analysis, proposed by Paik and Pedersen and later was generalized by the present authors. Various factors including the initial deflection shape which affect the ultimate compressive strength of unstiffened plates are investigated.

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