A multiaxial high-cycle fatigue life evaluation model for notched structural components |
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| Affiliation: | 1. Faculty of Engineering, University of Porto, Campus FEUP, 4200-465 Porto, Portugal;2. Department of Structural Engineering, Federal University of Minas Gerais, 31270-901 Belo Horizonte MG, Brazil;3. Faculty of Mechanical Engineering, Department of Mechanics, Materials Science and Engineering, Wroclaw University of Science and Technology, PL-50370 Wrocław, Poland;1. Montanuniversität Leoben, Chair of Mechanical Engineering, Leoben, Austria;2. Technische Universität Darmstadt, Materials Mechanics Group, Darmstadt, Germany;3. Aalto University, Department of Mechanical Engineering, Espoo, Finland;1. Univ. Lille, CNRS, Centrale Lille, Arts et Métiers Paris Tech, FRE 3723 – LML – Laboratoire de mécanique de lille, F-59000 Lille, France;2. MG-Valdunes, Trith St. Léger, France;1. Department of Civil Engineering, Indian Institute of Technology Roorkee, Rookee 247667, India;2. Department of Civil Engineering, Indian Institute of Technology Patna, Patna 801103, India;1. Department of Management and Engineering, University of Padova, Stradella San Nicola 3, 36100 Vicenza, Italy;2. NTNU, Department of Engineering Design and Materials, Richard Birkelands vei 2b, 7491, Trondheim, Norway;3. Institut Jean Le Rond d’Alembert, CNRS UMR 7190, Sorbonne Universités, UPMC Université Paris 06, 75252 Paris Cedex 05, France;1. Department of Bridge Engineering, MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China;2. Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA |
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| Abstract: | A model for multiaxial high-cycle fatigue life evaluation of notched structural components is proposed, which considers the impact of the stress field on fatigue life by utilizing the Theory of Critical Distances (TCD) and Finite Element Method (FEM). The maximum shear stress range plane is defined as the critical plane, and the damage parameters are the maximum effective shear stress amplitude and the maximum effective normal stress, which are obtained by averaging the stress in the hemisphere volume around the maximum stress point. To validate the accuracy of the model, multiaxial fatigue tests are carried out for both smooth and notched specimens of Aluminum–Silicon alloy. The results indicate that the evaluated life and experimental life have a good agreement. |
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| Keywords: | Multiaxial fatigue Life evaluation Notched structural components Critical plane Critical distances |
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