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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mackenzie, Donald
University of Strathclyde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2019New formulation of nonlinear kinematic hardening model, part IIcitations
- 2019New formulation of nonlinear kinematic hardening model, part Icitations
- 2018High cycle fatigue analysis in the presence of autofrettage compressive residual stresscitations
- 2018Fatigue and corrosion fatigue life assessment with application to autofrettaged partscitations
- 2017Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction
- 2017On cyclic yield strength in definition of limits for characterisation of fatigue and creep behaviourcitations
- 2017Implementation of plasticity model for a steel with mixed cyclic softening and hardening and its application to fatigue assessments
- 2014Safe structural design for fatigue and creep using cyclic yield strength
- 2014Cyclic yield strength in definition of design limits for fatigue and creepcitations
- 2013A fully implicit, lower bound, multi-axial solution strategy for direct ratchet boundary evaluationcitations
- 2012A fully implicit multi-axial solution strategy for direct ratchet boundary evaluation
- 2010Parametric finite-element studies on the effect of tool shape in friction stir weldingcitations
Places of action
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article
Cyclic yield strength in definition of design limits for fatigue and creep
Abstract
This study proposes a cyclic yield strength (CYS, σc ) as a key characteristicfor the definitionof safe design for engineering structures operating under fatigue and creep conditions.CYS is defined on a cyclic stress-straincurve, while monotonic yield strength (MYS, σm ) is defined on a monotonicstress-strain curve.Both values of σcand σmare identifiedusing a 2-steps fitting procedure of the experimental stress-strain curves using Ramberg-Osgood and Chaboche material models. Comparison of σcand fatigue endurance limit σf on the S-N fatigue curve reveals that they are approximatelyequal. Hence, basically safe fatigue design is guaranteed in purely elastic domain defined by the σc . A typical creep rupture curve in time-to-failure approach for creep analysis has 2 inflections corresponding to the σcand σm .These stresses separate 3 sections on the creep rupture curve, which are characterised by 3 different creep fracture modes and 3 creepdeformation mechanisms. Thus, basically safe creep design is guaranteed in linear creep domain withbrittle failure mode defined by the σc . These assumptions are confirmed for several structural low- and high-alloy steels for normal and high-temperature <br/>applications.<br/>