PSI - Issue 42

Roman Vodička et al. / Procedia Structural Integrity 42 (2022) 927 – 934

934

8

R. Vodicˇka / Structural Integrity Procedia 00 (2019) 000–000 t = 0 . 097 s t = 0 . 108 s

Fig. 9. Crack propagation as distribution of the phase-field variable at the selected instants in the option G II c / G I c = 1.

fracture energy values in various fracture modes were sketched in simple tests. The values of such parameters modify degradation processes in materials, setting of them have to be done in comparison with experimental measurements. The implementation of the computational model was not described in details. They include a staggered time step ping which assists to render a variationally based solution process, then utilisation of sequential quadratic program ming methods, and discretisation by finite elements. All these calculations are performed in an own MATLAB code. Based on the presented results it is expected that the computational approach will be applicable to the calculations of more tangled engineering problems that are awaited in forthcoming studies.

Acknowledgements

The author acknowledges support by the grants VEGA 1 / 0374 / 19 and VEGA 1 / 0363 / 21.

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