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Tehnički fakultet, University of Bihać , Bihać , Bosnia and Herzegovina
Tehnički fakultet, University of Bihać , Bihać , Bosnia and Herzegovina
Tehnički fakultet, University of Bihać , Bihać , Bosnia and Herzegovina
Vojno-tehnički institut , Beograd , Serbia
The paper presents numerical procedure for determining fracture mechanics parameters in elasticplastic conditions aroundthe crack tip. Applied to this instance, the analysis included the determination of contour J integral by the energy domain integral method. Both, numerical model of standard dimensions SENB specimen and network of finite elements were created during the analysis.Numerical model network around the crack tip was defined by the singular finite elements. Contour J integral was calculated in 10 contour lines around the crack tip, and the final value was shown as the arithmetic mean. J integral values were calculated according to different values of load and crack length. Diagrams of dependence of J integral to the load, i.e. the size of the crack, were formed from the obtained results. The results of numerical analysis were compared to experimental results and conclusions and guidelines are provided accordingly.
finite elements method, crack, numerical analysis, contour J integral, energy domain integral, SENB specimen
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