Effects of fretting wear process on fatigue crack propagation and life assessment
| Autor: | Reza Hojjati Talemi, José Alexander Araújo, André Luiz Pinto |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Process (computing) Fatigue life assessment Fracture mechanics Fretting 02 engineering and technology Surfaces and Interfaces Structural engineering 021001 nanoscience & nanotechnology Surfaces Coatings and Films Fatigue crack propagation Fretting wear 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Life assessment 0210 nano-technology business Extended finite element method |
| Popis: | This paper proposes a new methodology for fretting fatigue life assessment. It uses a combination of multiaxial fatigue criteria, the theory of critical distances and a node-displacement wear algorithm to account for the initiation life under fretting. Further, the extended finite element method is considered to compute the propagation life. A new method is also introduced to predict the crack propagation path under nonproportional loading conditions. To validate the analysis, available fretting fatigue data using an Al 2024-T3 alloy was considered. All the total lives estimated by the proposed approach fell within a scatter band 2, with an error between 11% and −39%. An analysis of the energy dissipated on the contact surface was performed and showed that for certain cases the inclusion of wear in the modeling of the problem is indeed essential to obtain more accurate fretting fatigue life assessments. ispartof: Tribology International vol:156 status: Published online |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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