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Title: A Comparison of 3D Finite Element Simulations for Berkovich and Conical Indentation of Fused Silica

Abstract

Much of our understanding of elastic-plastic contact mechanics as it relates to the interpretation of nanoindentation data comes from two-dimensional, axisymmetric finite element simulations of conical indentation. In many instances, conical results adequately describe real experimental results; however, there are instances where conical simulations fail to capture important behavior. Three-dimensional finite element simulations of Berkovich triangular pyramidal indentation of fused silica are compared to similar simulations with a 70.3{sup o} cone. It is shown that a potentially significant difference between the two indenters exists for the contact areas and contact stiffnesses. Implications for the interpretation of nanoindentation data are discussed.

Authors:
 [1];  [2];  [1]
  1. ORNL
  2. MTS Nanoinstruments Innovation Center, Oak Ridge
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Shared Research Equipment Collaborative Research Center
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
935723
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Surface Science and Engineering; Journal Volume: 1; Journal Issue: 2-3
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SILICA; THREE-DIMENSIONAL CALCULATIONS; FINITE ELEMENT METHOD; ELASTICITY; PLASTICITY; CONICAL CONFIGURATION

Citation Formats

Shim, Sang Hoon, Oliver, Warren C., and Pharr, George Mathews. A Comparison of 3D Finite Element Simulations for Berkovich and Conical Indentation of Fused Silica. United States: N. p., 2007. Web. doi:10.1504/IJSURFSE.2007.015028.
Shim, Sang Hoon, Oliver, Warren C., & Pharr, George Mathews. A Comparison of 3D Finite Element Simulations for Berkovich and Conical Indentation of Fused Silica. United States. doi:10.1504/IJSURFSE.2007.015028.
Shim, Sang Hoon, Oliver, Warren C., and Pharr, George Mathews. Mon . "A Comparison of 3D Finite Element Simulations for Berkovich and Conical Indentation of Fused Silica". United States. doi:10.1504/IJSURFSE.2007.015028.
@article{osti_935723,
title = {A Comparison of 3D Finite Element Simulations for Berkovich and Conical Indentation of Fused Silica},
author = {Shim, Sang Hoon and Oliver, Warren C. and Pharr, George Mathews},
abstractNote = {Much of our understanding of elastic-plastic contact mechanics as it relates to the interpretation of nanoindentation data comes from two-dimensional, axisymmetric finite element simulations of conical indentation. In many instances, conical results adequately describe real experimental results; however, there are instances where conical simulations fail to capture important behavior. Three-dimensional finite element simulations of Berkovich triangular pyramidal indentation of fused silica are compared to similar simulations with a 70.3{sup o} cone. It is shown that a potentially significant difference between the two indenters exists for the contact areas and contact stiffnesses. Implications for the interpretation of nanoindentation data are discussed.},
doi = {10.1504/IJSURFSE.2007.015028},
journal = {International Journal of Surface Science and Engineering},
number = 2-3,
volume = 1,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}