|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Fatigue in Materials: Fundamentals, Multiscale Modeling and Prevention
||A Voxel-based Meshing Framework for the Simulation of Arbitrary 3D Crack Growth in Heterogeneous Materials
||Brian Phung, Ashley Spear
|On-Site Speaker (Planned)
This talk will describe a meshing framework that enables explicit representation of 3D cracks and their arbitrary evolution throughout heterogeneous (e.g., polycrystalline) materials. The methodology relies on a voxel-based description of the heterogeneous volume and a recently proposed methodology for converting the voxel-based volume to a 3D finite element mesh that conforms to both internal material boundaries and to 3D crack surfaces. The proposed framework leverages surface-meshing capabilities within DREAM.3D and allows for the propagation of discontinuities between, across, and along material boundaries within a volume. The meshing framework is independent of constitutive model and of crack-propagation criterion. As a proof-of-concept, the framework is used to demonstrate the arbitrary evolution of a 3D crack as it transitions between transgranular and intergranular propagation, as well as the coalescence of two non-coplanar cracks in a 3D polycrystalline domain. The new meshing framework provides a powerful tool for multiscale modeling in fatigue applications.
||Planned: Supplemental Proceedings volume