Three-dimensional Digital Microstructure
Author(s)
C. F. Cornwell & R. W. Noack
Abstract
We report on a systematic means of generating a finite element (FE) mesh for realistic
three-dimensional (3D) microstructure systems that are suitable for FE analysis.
The relationship between a materials microstructure and its properties are well
documented and drive efforts to model the substructure evolution of textured materials.
An accurate 3D computer representation of the microstructure arrangement
of a material is essential to modeling the behavior and performance of materials
at the microstructure level. We describe a method that uses a combination of
experimental and computational techniques to produce an accurate statistical representation
of its microstructure arrangement. The experimental results are used
to guide the construction of the abstract 3D digital model and to provide a quantitative
measure for gauging the accuracy and quality of the model upon completion.
Information about the size, shape, and orientation of the grains as well as the
crystallographic orientation and miss-orientation between adjacent grains can be
reproduced. A 3D advancing front grid-generating technique then uses this information
to produce a tetrahedral volume mesh for the material that is suitable for
FE analysis.
1 Introduction
The goal of the current work is to provide polycrystallinematerial modelers access
to accurate three-dimensional (3D) digital microstructure models that are validated
by direct comparison to experimental recrystallization data and an auto-
Keywords
Related Book
Other papers in this volume
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