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Probabilistic simulation of fatigue damage and life scatter of metallic components

Naderi, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ijplas.2012.11.001
  3. Publisher: 2013
  4. Abstract:
  5. A three-dimensional (3D) finite element model (FEM) is developed to predict the progressive fatigue damage with provision for stochastic distribution of material properties. Fatigue damage model for low and high cycle fatigue considering plastic deformation is implemented in the FEM and the results are presented for Al 6061-T6, Al 7075-T6, Ti 6Al-4V and SS 316. Comparisons of the numerical and experimental results of stress-life reveal the validity of the approach. Also presented is the result of an investigation showing the effect of element types, element size, variation of material properties, and initial flaws on the randomness of fatigue life. The present fatigue damage simulation allows determining the scatter lifespan of mechanical components subjected to low and high cycle fatigue loading
  6. Keywords:
  7. A. Fatigue ; A. Microstructures ; B. Elastic-plastic material ; B. Metallic materials ; C. Finite elements ; Al 6061-T6 ; Al 7075-t6 ; Damage simulation ; Elastic-plastic Material ; Element sizes ; Element type ; Fatigue damage models ; Finite Element ; High cycle fatigue ; Initial flaw ; Life span ; Material property ; Mechanical components ; Metallic component ; Metallic material ; Probabilistic simulation ; Stochastic distribution ; Stress-life ; Three-dimensional (3D) finite element models ; Aluminum ; Elastoplasticity ; Finite element method ; Fatigue damage
  8. Source: International Journal of Plasticity ; Volume 43 , April , 2013 , Pages 101-115 ; 07496419 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0749641912001660