Fatigue Life Prediction Using Simplified Endurance Function Model

A methodology is proposed to apply an endurance function model with a genetic algorithm to estimate the fatigue life of notched or smooth components. The endurance function model is based on stress tensor invariants and deviatoric stress invariants. In the proposed methodology, FEA is used to simplify the application of the endurance function model. Experimental results from published literature are considered for the case studies to evaluate the proposed methodology. The results show that the proposed methodology simplified the application of the endurance function model, particularly by reducing the need for notch sensitivity factors, and the stress invariants can be calculated directly from the stresses at the critical point. The comparison with experimental results shows that, with proper calibration, the model can predict fatigue life accurately.

[1]  M. RahmanM.,et al.  Multiaxial fatigue behavior of cylinder head for a free piston linear engine , 2009 .

[2]  David Taylor,et al.  The Modified Wöhler Curve Method applied along with the Theory of Critical Distances to estimate finite life of notched components subjected to complex multiaxial loading paths , 2008 .

[3]  A. Carpinteri,et al.  Damage mechanics and Paris regime in fatigue life assessment of metals , 2013 .

[4]  Marco Perillo,et al.  Optimization and robustness of complex material model simulations with modeFRONTIER , 2009 .

[5]  Christine M. Anderson-Cook,et al.  A genetic algorithm with memory for mixed discrete–continuous design optimization , 2003 .

[6]  Luca Susmel,et al.  A critical distance/plane method to estimate finite life of notched components under variable amplitude uniaxial/multiaxial fatigue loading , 2012 .

[7]  Adam Niesłony,et al.  Critical plane fatigue life models of materials and structures under multiaxial stationary random loading: The state-of-the-art in Opole Research Centre CESTI and directions of future activities , 2012 .

[8]  Andrea Carpinteri,et al.  A notch multiaxial-fatigue approach based on damage mechanics , 2012 .

[9]  Andrea Carpinteri,et al.  A genetic algorithm applied to optimisation of patch repairs for cracked plates , 2006 .

[10]  Jwo Pan,et al.  Fatigue Testing and Analysis: Theory and Practice , 2004 .

[11]  Ahmad Kamal Ariffin,et al.  Durability Assessment of Cylinder Block for Two Stroke Free Piston Linear Engine using Random Loading , 2009 .

[12]  K. Kadirgama,et al.  Fatigue Life Prediction of Lower Suspension Arm Using Strain-Life Approach , 2009 .

[13]  Md. Abdul Maleque,et al.  Finite Element Based Fatigue Life Prediction of Cylinder Head for Two-Stroke Linear Engine Using Stress-Life Approach , 2008 .

[14]  Filippo Berto,et al.  Multi-axial fatigue behaviour of a severely notched carbon steel , 2006 .

[15]  Salha Abdullah,et al.  Finite Element Based Durability Assessment of a Free Piston Linear Engine Component , 2007 .

[16]  Abdul Rahman Abdul Ghaffar,et al.  Fatigue Life Evaluation of Suspension Knuckle Using Multibody Simulation Technique , 2012 .

[17]  Gary R. Halford,et al.  Fatigue And Durability of Structural Materials , 2005 .

[18]  Alberto Clarich,et al.  MULTI-OBJECTIVE OPTIMIZATION WITH MODEFRONTIER INTERFACES FOR ANSA AND METAPOST , 2011 .

[19]  Siti Norul Huda Sheikh Abdullah,et al.  Finite Element Based Fatigue Life Prediction of a New Free Piston Engine Mounting , 2008 .

[20]  Marina Franulović,et al.  Genetic algorithm in material model parameters’ identification for low-cycle fatigue , 2009 .

[21]  Matti Ristinmaa,et al.  Continuum approach to high-cycle fatigue modeling , 2008 .

[22]  Christine M. Anderson-Cook,et al.  A Genetic Algorithm with Memory for Mixed Discrete-Continuous Design Optimization , 2002 .

[23]  Che Hassan Che Haron,et al.  Influence of surface treatments on fatigue life of a two-stroke free piston linear engine component using random loading , 2006 .

[24]  Krishnaswamy Hariharan,et al.  Weighted error criterion to evaluate strain–fatigue life prediction methods , 2011 .

[25]  Luca Susmel,et al.  Estimating fatigue damage under variable amplitude multiaxial fatigue loading , 2011 .

[26]  M. RahmanM.,et al.  Fatigue Life Prediction of Lower Suspension Arm UsingStrain-Life Approach , 2009 .