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Title: Plastic buckling analysis of thick plates using p-Ritz method
Authors: Wang, C.M. 
Aung, T.M.
Keywords: Mindlin plate theory
Plastic buckling
Ritz method
Thick plates
Issue Date: Sep-2007
Citation: Wang, C.M., Aung, T.M. (2007-09). Plastic buckling analysis of thick plates using p-Ritz method. International Journal of Solids and Structures 44 (18-19) : 6239-6255. ScholarBank@NUS Repository.
Abstract: This paper is concerned with the application of the p-Ritz method for the plastic buckling analysis of thick plates. In order to allow for the effect of transverse shear deformation in thick plates, the Mindlin plate theory is adopted. The plastic buckling behaviour of the plate is captured by using the incremental and deformation theories of plasticity. The material property of the plate is assumed to obey the Ramberg-Osgood stress-strain relation. The p-Ritz method will be applied to obtain the governing eigenvalue equation for the plastic buckling analysis of uniformly stressed plates with edges defined by polynomial functions. In the p-Ritz method, the displacement functions of the plate are approximately represented by the product of mathematically complete two-dimensional polynomial functions and boundary equations raised to appropriate powers that ensure the satisfaction of the geometric boundary conditions. The validity, convergence and accuracy of the method were demonstrated for various plate shapes such as rectangular, triangular and elliptical shapes. A parametric study was also undertaken to study the plastic buckling behaviour and the effect of transverse shear deformation. © 2007 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Solids and Structures
ISSN: 00207683
DOI: 10.1016/j.ijsolstr.2007.02.026
Appears in Collections:Staff Publications

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