Iranian Journal of Mechanical Engineering Transactions of the ISME

Iranian Journal of Mechanical Engineering Transactions of the ISME

Elasto-plastic Analysis of Thick Cylinders using Shear Deformation Theories and Radial Return Mapping Method

Document Type : Research Paper

Authors
1 Ph.D. Candidate, Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
2 Professor, Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
Abstract
In this paper, the elasto-plastic stress analysis of the axisymmetric thick cylindrical shells undergoing internal pressure is investigated. The displacement field is considered according to first-order and higher-order shear deformation theories. The material is supposed to be elastic-perfectly plastic and the von Mises yield criterion is considered to determine the state of stress. The radial return method is applied to obtain the plastic stress components in the plastic region. Finally, the problem is solved for a thick cylindrical shell under internal pressure which is fixed at both ends and the results are compared with finite element results. The stresses, displacement, and elastic limit pressure results are indicated the effectiveness of higher-order shear deformation theory than first-order shear deformation theory.
Keywords

Subjects


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