Damage Analysis of Medium Carbon Steel in Low Cycle Fatigue

Zhi Yuan Rui; Chun Peng Lu; Emin Li; Wu Yin Jin

doi:10.4028/www.scientific.net/KEM.353-358.1141

Paper Titles

Analysis of Slant Surface Cracks with Step Notches Subject to Contact Loadings by a Variational Boundary Integral Method
p.1125

Effects of Joint Width on Strength, Stress-Strain Curve and Strain Localization of Rock Mass in Uniaxial Plane Strain Compression
p.1129

Failure Process and Stress-Strain Curve of Plane Strain Rock Specimen with Initially Random Material Imperfections
p.1133

A Statistical Analysis on the Fatigue Life Characteristics of Structural Materials
p.1137

Damage Analysis of Medium Carbon Steel in Low Cycle Fatigue
p.1141

A Simple Plastic-Damage Model for the Cement-Soil Admixture
p.1145

Generalized Thermoelastic Responses of a Piezoelectric Rod Subjected to a Moving Heat Source
p.1149

A Generalized Magneto-Thermoelastic Coupled Problem
p.1153

Study of Damage Mechanism on Aluminum Alloy under Two Kinds of Stress States and FEM Simulation
p.1157

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Damage Analysis of Medium Carbon Steel in Low Cycle Fatigue

Abstract:

By the test of rotational bending for bar of 45 steel with V notch in low cycle fatigue, the bar’s fatigue life is studied under strain-controlled condition. The characteristics of several kinds of specimens' crack propagations are analyzed. The accumulative effect of crack propagation is discussed to find the appropriate load for quick fracture. Based on the theory of continuum medium damage mechanics, the damage evolution model in low cycle fatigue is obtained. The predicted curves and strain-life curves agree with experimental data for medium carbon steel well in this work. These results are very important for the life estimation of medium carbon steel.