NDLI: A Direct Method on the Evaluation of Cyclic Behaviour With Creep Effect

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Chen, Haofeng Chen, Weihang Ure, James
Copyright Year	2012
Abstract	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.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	823
Ending Page	831
Page Count	9
File Format	PDF
ISBN	9780791855003
DOI	10.1115/PVP2012-78065
Volume Number	Volume 1: Codes and Standards
Conference Proceedings	ASME 2012 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2012-07-15
Publisher Place	Toronto, Ontario, Canada
Access Restriction	Subscribed
Subject Keyword	Direct method Fatigue Creep Creep ratcheting
Content Type	Text
Resource Type	Article

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