PSI - Issue 23

Stepanova Larisa et al. / Procedia Structural Integrity 23 (2019) 322–327 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

327

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4. Conclusions

The paper is aimed at the different approaches for the determination of the initial crack propagation direction angle. The crack propagation angle is obtained by 1) the multi-parameter fracture mechanics approach based on three fracture mechanics criteria: MTS, SED and maximum circumferential strain criteria; 2) atomistic modeling for the mixed-mode loading of the plane medium with the central crack. It is shown that the initial crack propagation angles given by the both approaches are very close especially for the case when the higher order terms in the Williams series expansion are kept. One can conclude either that considerable efforts still remain while modeling the mechanical behavior of crystalline materials with empirical potential in the framework of MD simulations. The data obtained from these atomistic studies can be employed in hierarchical multiscale modelling of advanced materials.

Acknowledgements

Financial support from the Russian Foundation of Basic Research (project No. 19-01-00631) is gratefully acknowledged.

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