Journal
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Volume 50, Issue 18, Pages 2737-2748Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2013.04.029
Keywords
Stress concentration; Nanovoid; Half-space; Displacement potentials method
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Funding
- Ph.D. Programs Foundation of Ministry of Education of China [20110092120018]
- Science Foundation of Ministry of Human Resources and Social Security of China for Returned Scholars
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Stress concentrations typically occur near discontinuities in structural elements and are often responsible for crack initiation. The aim of this study is to assess the stress concentration effects in the vicinity of a nanovoid located near a free surface. A semi-analytical investigation was carried out using the method of displacement potentials and coherent surface models. We investigated the dependence of stress concentration on a few important parameters like surface properties, external loads, bulk properties, as well as void size and location. Our analysis highlighted a few possible combinations of governing parameters that can reduce, prevent, and even reverse stress concentrations in nanoporous media. (C) 2013 Elsevier Ltd. All rights reserved.
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