Fretting fatigue crack initiation lifetime predictor tool: Using damage mechanics approach |
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| Affiliation: | 1. Department of Electrical Energy, Metals, Mechanical Constructions and Systems, Faculty of Engineering and Architecture, Ghent University, Belgium;2. Division of Computational Mechanics, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;3. Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Soete Laboratory, Faculty of Engineering and Architecture, Ghent University, Technologiepark Zwijnaarde 903, Zwijnaarde, B-9052, Belgium;1. Purdue University, School of Mechanical Engineering, West Lafayette, IN 47907, USA;2. Sentient Corporation, 672 Delaware Avenue, Buffalo, NY 14209, USA;1. Laboratoire de Mécanique et Technologie (LMT), ENS Paris–Saclay/CNRS/Université Paris–Saclay, 61 avenue du Président Wilson, 94235 Cachan, France;2. Safran Aircraft Engines, Rond-Point René Ravaud, Réau, 77550 Moissy-Cramayel, France;1. Surface Technologies, Mondragon University, Loramendi 4, 20500 Arrasate-Mondragon, Spain;2. Orona EIC, Orona Ideo, Jauregi Bidea s/n, 20120 Hernani, Spain;1. Center of Materials Engineering and Performance, Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathumthani 12120, Thailand;2. National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), 114 Thailand Science Park, Paholyothin Rd., Klong 1, Klong Luang, Pathumthani 12120, Thailand;3. Department of System Safety, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan |
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| Abstract: | Fretting fatigue is a combination of two complex mechanical phenomena. Fretting appears between components that are subjected to small relative oscillatory motions. Once these connected components undergo cyclic fatigue load, fretting fatigue occurs. In general, fretting fatigue failure process can be divided into two main portions, namely crack initiation and crack propagation. Fretting fatigue crack initiation characteristics are very difficult to detect because damages such as micro-cracks are always hidden between two contact surfaces.In this paper Continuum Damage Mechanics (CDM) approach in conjunction with Finite Element Analyses (FEA) is used to find a predictor tool for fretting fatigue crack initiation lifetime. For this purpose an uncoupled damage evolution law is developed to model fretting fatigue crack initiation lifetime at various fretting condition such as contact geometry, axial stress, normal load and tangential load. The predicted results are validated with published experimental data from literature. |
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