Investigation on the effect of material mismatch between two dissimilar materials using an adaptive phase‑field method
Author (s): Khan, S.; Annavarapu, C. and Rodríguez-Ferran, A.Journal: International Journal of Advances in Engineering Sciences and Applied Mathematics
Volume: 15(4)
Pages: 173 - 186
Date: 2023
Abstract:
This paper uses an adaptive phase-field model to investigate the influence of material mismatch on fracture propagation in bi-material systems. We begin by simulating a model with mismatches in elastic stiffness and fracture toughness to explore the competition between crack deflection and penetration at the material interface. Next, we examine the interaction between elastic stiffness mismatch and fracture toughness mismatch and its impact on crack propagation behavior. We then explore the effect of interface inclination on crack propagation in a bi-material model. Finally, we study the influence of interface strength on fracture propagation. Through this numerical study, we provide valuable insights into different fracture patterns and failure mechanisms in bi-material systems.
