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Conference Paper

FE modelling of small punch creep test using Kocks-Mecking-Estrin model

Authors:

H.K. Al-Abedy ,

Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
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I.A. Jones,

Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
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W. Sun

Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
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Abstract

Small punch creep testing (SPCT) of thin disc specimens can be considered as a useful technique for determination of creep properties of exposed components of power generation. In this work, the Kocks-Mecking-Estrin (KME) constitutive model is used to simulate the small punch creep behaviour of the P91 steel at 600℃ based on a full set of experimental results. An implicit computational algorithm is developed based on the radial return mapping approach. Finite element analyses of a small punch creep test is carried out using ABAQUS software coupled with a UMAT material subroutine which has been developed by the authors. The small punch creep test results are compared with the corresponding results from modelling using the UMAT code. In addition, a comparison of results of the uniaxial tensile test for the P91 steel at 600℃ with the corresponding modelling results is also presented. The numerical results obtained have shown the model’s versatility and good predictive capability for the P91 steel at 600℃.
How to Cite: Al-Abedy, H.K., Jones, I.A. and Sun, W., 2018. FE modelling of small punch creep test using Kocks-Mecking-Estrin model. Ubiquity Proceedings, 1(S1), p.3. DOI: http://doi.org/10.5334/uproc.3
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Published on 10 Sep 2018.
Peer Reviewed

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