|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Field Modeling of Crack Propagation, Deflection and Delamination in Engineered Interfaces
||Vinamra Agrawal, Brandon Runnels
|On-Site Speaker (Planned)
Nanolayered composites with engineered interfaces offer excellent potential for damage resistance and improved fracture toughness. In this work, we use phase field model to study the crack propagation in nanolayered composites with engineered interfaces. We study the case of a notch crack propagating under mode-I loading. The domain comprised of two isotropic materials with different elastic properties and fracture energies, with an interface of a different fracture energy. As the crack propagates and approaches the interface, depending on the moduli, fracture energy ratios and geometry of the interface, the crack can either deflect towards or away from the interface leading to either delamination or material fracture. We implement the phase field model using Alamo, a finite difference multilevel multigrid and multicomponent solver, on a block structured adaptively refined grid. We conduct a systematic analysis of crack interaction with interface by varying moduli, fracture energies and interface geometries.
||Modeling and Simulation, Computational Materials Science & Engineering, Composites