Abstract
The crack initiation and propagation phases of the fatigue life of a plate specimen with a center hole are analyzed. The local transient stress–strain relationship is investigated by means of finit...
Highlights
A frequent goal of simulation engineers is to determine the service life of a structural component
Since accurate multiaxial total life approaches have not been established, total fatigue life is considered the sum of crack initiation and propagation life
The less than 5% difference in the calculated strain amplitudes leads to a larger difference in the calculated initiation life; analytical results remain on the safe side
Summary
A frequent goal of simulation engineers is to determine the service life of a structural component. Since accurate multiaxial total life approaches have not been established, total fatigue life is considered the sum of crack initiation and propagation life. This two-stage approach has been used by de Jesus et al.[1] for the fatigue assessment of riveted and bolted joints. Kim et al.[4] developed a fatigue model using a cycledependent cohesive zone law, where the reduction of fracture energy and degradation of stiffness describe the material fatigue. Qukaszewicz[5] used the criterion of averaged structural microdamage resulting from local slips for the fatigue life estimation of test specimens under tension and torsion Kim et al.[4] developed a fatigue model using a cycledependent cohesive zone law, where the reduction of fracture energy and degradation of stiffness describe the material fatigue. qukaszewicz[5] used the criterion of averaged structural microdamage resulting from local slips for the fatigue life estimation of test specimens under tension and torsion
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