Fatigue Damage Model for Numerical Assessment of Fatigue Characteristics

Chi Seung Lee; Myung Hyun Kim; Min Sung Chun; Tak Kee Lee; Jae Myung Lee

doi:10.4028/www.scientific.net/MSF.580-582.663

Paper Titles

Forefront in High Accurate Prediction of Welding Distortion in Japan
p.645

Development of Welding Distortion Analysis Method Using Residual Strain as Boundary Condition
p.649

Weldability Studies on the Replacement Repair Welded Joints of a Damaged Steel Bridge
p.655

Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc
p.659

Fatigue Damage Model for Numerical Assessment of Fatigue Characteristics
p.663

Study of Weldability for Circularly Input Heat
p.667

Investigation of Soundness of Welds in Welding under Static and Cyclic Loading
p.671

Effects of Different R Ratios on Fatigue Crack Growth in Laser Peened Friction Stir Welds
p.675

The Variations of Quality Characteristics According to Environmental Factors of High Tension Bolt, Nut and Washer Set
p.681

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Fatigue Damage Model for Numerical Assessment of Fatigue Characteristics

Abstract:

The aim of this study is the development of a numerical technique applicable for the fatigue assessment based on the damage mechanics approach. The generalized elasto-visco-plastic constitutive equation, which can consider the internal damage evolution behavior, is developed in order to numerically evaluate the material fatigue responses. Explicit information of the relationships between the mechanical properties and material constants, which are required for the mechanical constitutive and damage evolution equations, are derived. The performance of the developed technique has been verified using the S-N relationship assessment for STS304 stainless steel.