A New High-Cycle Fatigue Criterion Based on a Self-consistent Scheme for Hard Metals Under Non-proportional Loading
| Autor: | Eric Charkaluk, Kékéli Eva K. Amouzou |
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| Rok vydání: | 2017 |
| Předmět: |
Work (thermodynamics)
Mathematical analysis 02 engineering and technology Extension (predicate logic) 021001 nanoscience & nanotechnology Fatigue limit 020303 mechanical engineering & transports 0203 mechanical engineering Ferrite (iron) Scheme (mathematics) Forensic engineering Representative elementary volume 0210 nano-technology Non proportional Anisotropy Mathematics |
| Zdroj: | Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture ISBN: 9783319703640 |
| DOI: | 10.1007/978-3-319-70365-7_4 |
| Popis: | Elastic anisotropy has a great influence on high-cycle fatigue but is rarely taken into account in the micro-macro fatigue criteria. The aim of this paper is to overcome this deficiency by developing a new fatigue limit criterion suitable for non-proportional loads and taking into account anisotropic cubic crystals. Attention is focused upon the Papadopoulos’s integral criterion. This criterion supposes that the elastic properties of the representative elementary volume of the material and its constituent grains were the same. In general, this assumption is not hold true. To describe the meso-macro transition, the author uses the Lin-Taylor scheme. In this work we propose the extension of this integral criterion, using the self-consistent scheme of Bui. This makes it possible to take into account the cubic anisotropy of the ferrite inclusions. The application of the new criterion on 42CrMo4, 34Cr4, CK45 and 25CrMo4 steels gives very satisfactory results. |
| Databáze: | OpenAIRE |
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