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Title: | A Study on Low Cycle Fatigue Life Assessment of Notched Specimens Made of 316 LN Austenitic Stainless Steel |
Authors: | Abarkan, I Khamlichi, A Shamass, R |
Keywords: | finite element analysis;316 LN stainless steel;notched specimens;local strain approaches;low cycle fatigue |
Issue Date: | 18-Aug-2021 |
Publisher: | The American Society of Mechanical Engineers (ASME) |
Citation: | Abarkan, I., Khamlichi, A. and Shamass, R. (2021) 'A Study on Low Cycle Fatigue Life Assessment of Notched Specimens Made of 316 LN Austenitic Stainless Steel', Journal of Pressure Vessel Technology, 144 (2), 021503, pp. 1 - 12. doi: 10.1115/1.4051627. |
Abstract: | The local strains obtained from the best-known analytical approximations, namely, Neuber's rule, equivalent strain energy density method, and linear rule, were compared with those resulting from finite element analysis. It was found that apart from Neuber's rule with the elastic stress concentration factor 𝐾𝑡, all the aforementioned analytical methods underestimate the local strains for all notch root radius, strain amplitude levels, at room temperature and 550 °C. Neuber's rule with 𝐾𝑡 slightly overestimates the maximum strains for lower notch root radius, namely, 1.25 mm, at high temperature. Based on the analytically and numerically obtained notch root strains, the fatigue lives were estimated using the Coffin–Manson–Basquin equation. Besides, a numerical assessment of fatigue lives was made based on Brown–Miller and maximum shear strain multi-axial fatigue life criteria. It was found that all these methods provide inaccurate fatigue life results for all notch root radius, strain amplitude level, and under both temperatures conditions. Therefore, a new method was suggested, for which only the applied strain amplitude is needed to calculate the fatigue life of notched components. It was revealed that the suggested method provides a good fatigue life prediction at a higher temperature loading state. |
URI: | https://bura.brunel.ac.uk/handle/2438/28235 |
DOI: | https://doi.org/10.1115/1.4051627 |
ISSN: | 0094-9930 |
Other Identifiers: | ORCID iD: Rabee Shamass https://orcid.org/0000-0002-7990-8227 021503 PVT-20-1150 |
Appears in Collections: | Dept of Civil and Environmental Engineering Research Papers |
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FullText.pdf | Copyright © 2021 by ASME. This is the author accepted manuscript It may be downloaded for personal use only. Any other use requires prior permission of the American Society of Mechanical Engineers (see: https://www.asme.org/publications-submissions/journals/information-for-authors/journal-guidelines/rights-and-permissions). The published version, Abarkan, I., Khamlichi, A. and Shamass, R. (2021) 'A Study on Low Cycle Fatigue Life Assessment of Notched Specimens Made of 316 LN Austenitic Stainless Steel', Journal of Pressure Vessel Technology, 144 (2), 021503, pp. 1 - 12, may be accessed at DOI URL: https://doi.org/10.1115/1.4051627 . | 1.46 MB | Adobe PDF | View/Open |
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