Abstract
A multi-axial, unified sinh viscoplastic material model has been developed to model the behaviour of advanced materials subjected to high temperature cyclic loading. The material model accounts for rate-dependent effects related to high temperature creep and cyclic plasticity effects such as isotropic and kinematic hardening. The material model, which is capable of simulating both isothermal and anisothermal loading conditions, is implemented in multi-axial form in a material user subroutine and validated against uniaxial test data. The results validate the implementation for both isothermal and anisothermal uniaxial loading conditions for as-new P91 steel.
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Acknowledgments
This publication has emanated from research conducted with the financial support of Science Foundation Ireland under Grant Number SFI/10/IN.1/I3015. SBL gratefully acknowledges receipt of a Millennium Travel Grant from NUI Galway.
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Barrett, R.A., O’Donoghue, P.E., Leen, S.B. (2013). Finite Element Modelling of the Thermo-Mechanical Behaviour of a 9Cr Martensitic Steel. In: Altenbach, H., Kruch, S. (eds) Advanced Materials Modelling for Structures. Advanced Structured Materials, vol 19. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35167-9_4
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DOI: https://doi.org/10.1007/978-3-642-35167-9_4
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