Uniaxial and biaxial ratchetting in piping materials-experiments and analysis

Kulkarni, S. C. ; Desai, Y. M. ; Kant, T. ; Reddy, G. R. ; Prasad, P. ; Vaze, K. K. ; Gupta, C. (2004) Uniaxial and biaxial ratchetting in piping materials-experiments and analysis International Journal of Pressure Vessels and Piping, 81 (7). pp. 609-617. ISSN 0308-0161

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03080...

Related URL: http://dx.doi.org/10.1016/j.ijpvp.2004.04.001


The performance of the Chaboche kinematic hardening model has been evaluated in this paper to predict the ratchetting responses for a broad set of uniaxial and biaxial loading histories. The investigations have been performed with reference to both uniaxial and biaxial experimental data, viz. (a) strain and stress controlled uniaxial tests on tensile specimens; (b) biaxial tests on straight pipes with constant internal pressure and cyclic bending load; and (c) a shake table test on elbow. The parameters of the Chaboche model have been calculated from the uniaxial strain controlled stable hysteresis loop. Amongst the various parameters in the Chaboche model, it has been found that the selection of the value of γ3 plays a crucial role in achieving better simulation. The Chaboche model was observed to predict complete shakedown for γ3=0. On the other hand, the model closely simulated the experimental results for γ3=9. The same parameters have been used to analyze the biaxial loading condition. Ratchetting simulation studies by the Chaboche model have resulted in reasonably good agreement with experiments.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Uniaxial and Biaxial Ratchetting; Chaboche Model; Uniaxial and Biaxial Experiments
ID Code:15872
Deposited On:13 Nov 2010 12:23
Last Modified:17 May 2016 00:43

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