Growth of multiple fatigue cracks in plates under cyclic tension (CROSBI ID 161121)
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Podaci o odgovornosti
Božić, Željko ; Wolf, Hinko ; Semenski, Damir
engleski
Growth of multiple fatigue cracks in plates under cyclic tension
Fatigue life of plates damaged with multiple collinear cracks and subjected to cyclic tension loading was investigated. Results of fatigue crack growth tests with a constant tensile stress range were reported for a plate with a single crack and a plate with three collinear equidistant cracks. A simulation procedure based on numerical integration of the differential equation of a crack growth model was introduced. The Mode I stress intensity factor values, KI, were calculated by a FEM program using singular elements and assuming plane stress conditions. Using the Paris law, Klesnil- Lukáš and Zheng-Hirt crack growth models, the fatigue life was simulated for the test specimens. Experiments and simulations showed a higher crack growth rate for the specimen with three cracks and 40% shorter fatigue life compared to the specimen with a single crack, which is due to the interaction of multiple cracks.
multiple fatigue cracks; crack growth simulation; fatigue test
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nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
Povezanost rada
Grafička tehnologija, Strojarstvo, Zrakoplovstvo, raketna i svemirska tehnika