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Internal stress model for pre-primary stage of low-stress creep
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SYSNO ASEP 0346624 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Internal stress model for pre-primary stage of low-stress creep Author(s) Kloc, Luboš (UFM-A) RID, ORCID Source Title Journal of Physics: Conference Series. - : Institute of Physics Publishing - ISSN 1742-6588
Roč. 240, - (2010), 012086Number of pages 4 s. Action ICSMA-15 (15th International Conference on the Strength of Materials) Event date 16.08.2009-21.08.2009 VEvent location Dresden Country DE - Germany Event type WRD Language eng - English Country GB - United Kingdom Keywords low-stress creep ; transient stage ; elastoplastic model Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects IAA200410701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000286515800086 DOI 10.1088/1742-6596/240/1/012086 Annotation Initial transient stage in low-stress creep experiments was observed in all such experiments. Recently, evidences were presented that this stage cannot be considered as a normal creep primary stage, though the shape of the creep curve is similar. The strain reached during this so called pre-primary stage is fully recoverable upon unloading; the internal stresses must play important role in the effect. Model of standard linear anelastic solid was modified by introduction of creeping body instead of viscous dashpot. Both power law and hyperbolic sine creep law were used to fit observed creep curves of model and structural materials. Mainly the model using hyeprbolic sine creep law provides good fit to individual creep curves and sets of creep curves at different stresses. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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