A phase field model to simulate crack initiation from pitting site in isotropic and anisotropic elastoplastic material
Abstract
A multiphysics phase field framework for coupled electrochemical and elastoplastic behaviors is presented, where the evolution of complex solid-electrolyte is described by the variation of the phase field variable with time. The solid-electrolyte interface kinetics nonlinearly depends on the thermodynamic driving force and can be accelerated by mechanical straining according to the film rupture-dissolution mechanism. A number of examples in two- and three- dimensions are demonstrated based on the finite element-based MOOSE framework. The model successfully captures the pit-to-crack transition under simultaneous electrochemical and mechanical effects. The crack initiation and growth has been demonstrated to depend on a variety of materials properties. The coupled corrosion and crystal plasticity framework also predict the crack initiation away from the perpendicular to the loading direction.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 10, 2023
- Source ID
- 10.1088/1361-651x/acd132
Entities
People
- Christian Matthew
- Jie Song
- Kevin Sangoi
- Yao Fu
Organizations
- National Science Foundation
- Office of Naval Research