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Ratcheting behaviour of elasto-plastic thin-walled pipes under internal pressure and subjected to cyclic axial loading.
- Source :
-
Thin-Walled Structures . Aug2015, Vol. 93, p102-111. 10p. - Publication Year :
- 2015
-
Abstract
- The present paper is concerned with the analysis of the ratcheting behaviour of elasto-plastic thin-walled pipes under internal pressure and subjected to cyclic axial loading. Understanding the behaviour of this kind of structure at different load levels is of critical importance in a range of engineering applications such as in the design of structural components of power and chemical reactors. Depending on the kinematic hardening, the pipe may exhibit a ratcheting behaviour in the circumferential direction, which leads to a progressive accumulation of deformation. Many different constitutive theories have been proposed to model the kinematic hardening under such kind of loading history. The present paper presents a simple local criterion to indicate whether or not the pipe may exhibit a progressive accumulation of deformation. Such criterion is independent of the choice of the evolution law adopted for the backstress tensor. As an example, a semi-analytic approach using a mixed nonlinear kinematic/isotropic hardening model is proposed to be used in a preliminary analysis of this kind of structure. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ELASTOPLASTICITY
*RATCHETS
*PIPE
*PRESSURE
*CYCLIC loads
*DEFORMATIONS (Mechanics)
Subjects
Details
- Language :
- English
- ISSN :
- 02638231
- Volume :
- 93
- Database :
- Academic Search Index
- Journal :
- Thin-Walled Structures
- Publication Type :
- Academic Journal
- Accession number :
- 102463325
- Full Text :
- https://doi.org/10.1016/j.tws.2015.03.011