Plastic-Buckling of Rectangular Plates under Combined Uniaxial and Shear Stresses

• Published in: Journal of engineering mechanics Vol. 135; no. 8; pp. 892 - 895
• Main Authors: Wang, C. M, Aung, Tun Myint, Kitipornchai, S, Xiang, Y
• Format: Journal Article
• Language: English
• Published: Reston, VA American Society of Civil Engineers 01.08.2009
• Subjects: Buckling; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Inelasticity (thermoplasticity, viscoplasticity...); Physics; Solid mechanics; Static elasticity (thermoelasticity...); Structural and continuum mechanics; TECHNICAL NOTES; Plastic analysis; Stress strain relation; Thin plate; Thick plate; Aspect ratio; Modeling; Combined load; Inelasticity; Inelastic stability; Uniaxial stress; Plasticity; Shear deformation; Critical load; Mindlin model; Rectangular plate; Ritz method; Buckling; Transverse shear; Plates; Combined stress
• ISSN: 0733-9399; 1943-7889
• DOI: 10.1061/(ASCE)0733-9399(2009)135:8(892)

This paper is concerned with the plastic-buckling of rectangular plates under uniaxial compressive and shear stresses. In the prediction of the plastic-buckling stresses, we have adopted the incremental theory of plasticity for capturing the inelastic behavior, the Mindlin plate theory for the effect of transverse shear deformation, the Ramberg-Osgood stress–strain relation for the plate material, and the Ritz method for the bifurcation buckling analysis. The interaction curves of the plastic uniaxial buckling stress and the plastic shear buckling stress for thin and thick rectangular plates are presented for various aspect ratios. The effect of transverse shear deformation is examined by comparing the interaction curves obtained based on the Mindlin plate theory and the classical thin plate theory.