Estimation of fretting fatigue life using a multiaxial stress-based critical distance methodology
| Autor: | M. S. T. Pires, Luca Susmel, José Alexander Araújo, F.C. Castro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Critical distance
Materials science business.industry Multiaxial fatigue Mechanical Engineering lcsh:Mechanical engineering and machinery Work (physics) lcsh:TA630-695 Fretting Structural engineering lcsh:Structural engineering (General) Theory of Critical Distances Life estimation Stress (mechanics) Amplitude Mechanics of Materials Fretting fatigue Hull Shear stress lcsh:TJ1-1570 business Vibration fatigue |
| Zdroj: | Frattura ed Integrità Strutturale; Vol 9 No 33 (2015): July 2015; pages 444-450 Frattura ed Integrità Strutturale; V. 9 N. 33 (2015): July 2015; pages 444-450 Frattura ed Integrità Strutturale, Vol 9, Iss 33 (2015) Frattura ed Integrità Strutturale, Vol 9, Iss 33, Pp 444-450 (2015) |
| ISSN: | 1971-8993 |
| Popis: | This work presents a methodology for life estimation of mechanical couplings subjected to fretting fatigue. In this approach, a stress-based multiaxial fatigue parameter is evaluated at a critical distance below the contact surface. The fatigue parameter is based on an improved formulation of the Modified Wöhler Curve Method, in which the shear stress amplitude is measured via the Maximum Rectangular Hull method. To apply the Theory of Critical Distances in the medium-cycle fatigue regime, the critical distance is assumed to depend on the number of cycles to failure. Available fretting fatigue data, conducted on a cylinder-plane contact configuration made of Al alloy 4% Cu, were used to assess the methodology. Most of the life estimates were within an error band given by a factor of 2. |
| Databáze: | OpenAIRE |
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