AN EXTENDED FINITE ELEMENT METHOD FORMULATION FOR MODELING THE RESPONSE OF POLYCRYSTALLINE MATERIALS TO DYNAMIC LOADING

The eXtended Finite Element Method (X-FEM) is a finite-element based discretization technique developed originally to model dynamic crack propagation [1]. Since that time the method has been used for modeling physics ranging from static meso-scale material failure to dendrite growth. Here we adapt t...

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Bibliographic Details
Main Authors: Robbins, Joshua, Voth, Thomas E
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:The eXtended Finite Element Method (X-FEM) is a finite-element based discretization technique developed originally to model dynamic crack propagation [1]. Since that time the method has been used for modeling physics ranging from static meso-scale material failure to dendrite growth. Here we adapt the recent advances of Vitali and Benson [2] and Song et al. [3] to model dynamic loading of a polycrystalline material. We use demonstration problems to examine the method's efficacy for modeling the dynamic response of polycrystalline materials at the meso-scale. Specifically, we use the X-FEM to model grain boundaries. This approach allows us to i) eliminate ad-hoc mixture rules for multi-material elements and ii) avoid explicitly meshing grain boundaries.
ISSN:0094-243X
DOI:10.1063/1.2833025