Computer simulation of kinked fatigue crack propagation at sharp notches

Artem S. Semenov; Siegfried Saehn; Boris E. Melnikov

doi:10.1117/12.347466

5 May 1999 Computer simulation of kinked fatigue crack propagation at sharp notches

Artem S. Semenov, Siegfried Saehn, Boris E. Melnikov

Proceedings Volume 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (1999) https://doi.org/10.1117/12.347466
Event: International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 1998, St. Petersburg, Russian Federation

Abstract

The direct modeling of fatigue cracks propagation with nonlinear paths is carried out on the base of continuum damage mechanics concept. The crack initiation and propagation is assumed to occur within the current plane of maximal damage. The various damage measures are introduced and compared for the prediction of the crack growth direction. The influence of the crack configuration on the effect of crack closure and propagation rate is investigated for the different types of crack trajectory. Elasto-plastic finite element analysis of the steel sharp notched specimens with a single crack under plane cyclic bending is performed for the different cases of loading. Comparison of numerical results and experimental data has been presented and discussed.

Citation Download Citation

Artem S. Semenov, Siegfried Saehn, and Boris E. Melnikov "Computer simulation of kinked fatigue crack propagation at sharp notches", Proc. SPIE 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (5 May 1999); https://doi.org/10.1117/12.347466

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