Publication Date
2011
Document Type
Thesis
Committee Members
George Huang (Other), Nathan Klingbeil (Committee Member), Ravi Penmetsa (Advisor), Joseph Slater (Committee Member)
Degree Name
Master of Science in Engineering (MSEgr)
Abstract
The focus of this research is to develop a framework to track damage evolution in a structural model subjected to a fatigue environment. This framework incorporates a micromechanical approach of continuous damage modeling, where damage in a homogenized representative microstructure is introduced at the continuum scale through the material constitutive matrix. In this research, damage in the representative microstructure is simulated utilizing cohesive zone models (CZM) whose properties are a function of the magnitude of applied stresses and the resulting separation. In order to minimize the mesh dependence of the cohesive zone model an adaptive meshing technique is employed. A fatigue simulation is performed to demonstrate the capability of the framework to predict the initiation and evolution of damage.
Page Count
82
Department or Program
Department of Mechanical and Materials Engineering
Year Degree Awarded
2011
Copyright
Copyright 2011, all rights reserved. This open access ETD is published by Wright State University and OhioLINK.
