Chen, Haofeng and Chen, Weihang and Ure, James Michael (2012) Linear matching method on the evaluation of cyclic behaviour with creep effect. In: ASME Pressure Vessels and Piping Conference 2012, 2012-07-15 - 2012-07-20.
Chen_HF_Pure_Linear_matching_method_on_the_evaluation_of_cyclic_behaviour_with_creep_effect_Jul_2012.pdf - Preprint
This paper describes a new Linear Matching Method (LMM) technique for the direct evaluation of cyclic behaviour with creep effects of structures subjected to a general load condition in the steady cyclic state. The creep strain and plastic strain range for use in creep damage and fatigue assessments, respectively, are obtained. A benchmark example of a Bree cylinder subjected to cyclic thermal load and constant mechanical load is analysed to verify the applicability of the new LMM to deal with the creep fatigue damage. The cyclic responses for different loading conditions and dwell time periods within the Bree boundary are obtained. To demonstrate the efficiency and effectiveness of the method for more complex structures, a 3D holed plate subjected to cyclic thermal loads and constant axial tension is analysed. The results of both examples show that with the presence of creep the cyclic responses change significantly. The new LMM procedure provides a general purpose technique for the evaluation of cyclic behaviour, the plastic strain range and creep strain for the creep fatigue damage assessment with creep fatigue interaction.
|Item type:||Conference or Workshop Item (Paper)|
|Keywords:||creep, fatigue, creep ratcheting, direct method, Mechanical engineering and machinery, Mechanical Engineering, Computational Mechanics, Mechanics of Materials|
|Subjects:||Technology > Mechanical engineering and machinery|
|Department:||Faculty of Engineering > Mechanical and Aerospace Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||25 Apr 2012 08:41|
|Last modified:||29 Mar 2017 00:44|