PSI - Issue 52

Made Wiragunarsa et al. / Procedia Structural Integrity 52 (2024) 583–593 Wiragunarsa et al. / Structural Integrity Procedia 00 (2023) 000–000

592

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hand, the interaction deletion algorithm requires a more complex procedure, making the implementation is di ffi cult, especially for a complex-shaped crack surface.

5. Conclusions

This research uses the updated Lagrangian SPH for crack growth analysis. The study compares the performance of two crack modelling techniques in SPH: the particle deletion and the interaction deletion frameworks. The particle deletion method removes the corresponding particle at the crack tip when the crack propagation or fracture criterion is reached. The space occupied by the removed particle will become empty and serve as a new crack surface. The method o ff ers a simple algorithm that makes the application straightforward. On the other hand, the interaction deletion method represents the crack between the particles. The corresponding particle interaction at the crack tip will be removed when the crack propagation or fracture criterion is reached. This method keeps the particles remaining, and the kernel value is set to zero for the corresponding interaction pair. The interaction deletion method o ff ers better accuracy. However, the algorithm is more complicated.

Acknowledgements

The authors gratefully acknowledge the Research, Community Service, and Innovation Program (P2MI) 2023, Institut Teknologi Bandung, Indonesia, for their support of this research.

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