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Title: Unified Description of Aging and Rate Effects in Yield of Glassy Solids

Abstract

The competing effects of slow structural relaxations (aging) and deformation at constant strain rate on the shear yield stress {tau}{sup y} of simple model glasses are examined using molecular simulations. At long times, aging leads to a logarithmic increase in density and {tau}{sup y}. The yield stress also rises logarithmically with rate but shows a sharp transition in slope at a rate that decreases with increasing age. We present a simple phenomenological model that includes both intrinsic rate dependence and the change in properties with the total age of the system at yield. As predicted by the model, all data for each temperature collapse onto a universal curve.

Authors:
 [1];  [2]
  1. Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University, Princeton, New Jersey 08544 (United States)
  2. Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 (United States)
Publication Date:
OSTI Identifier:
20699613
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 95; Journal Issue: 22; Other Information: DOI: 10.1103/PhysRevLett.95.225504; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AGING; DEFORMATION; DENSITY; GLASS; LENNARD-JONES POTENTIAL; RELAXATION; SHEAR; SIMULATION; SOLIDS; STRAIN RATE; STRESSES; YIELDS

Citation Formats

Rottler, Joerg, and Robbins, Mark O. Unified Description of Aging and Rate Effects in Yield of Glassy Solids. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.225504.
Rottler, Joerg, & Robbins, Mark O. Unified Description of Aging and Rate Effects in Yield of Glassy Solids. United States. doi:10.1103/PhysRevLett.95.225504.
Rottler, Joerg, and Robbins, Mark O. Fri . "Unified Description of Aging and Rate Effects in Yield of Glassy Solids". United States. doi:10.1103/PhysRevLett.95.225504.
@article{osti_20699613,
title = {Unified Description of Aging and Rate Effects in Yield of Glassy Solids},
author = {Rottler, Joerg and Robbins, Mark O.},
abstractNote = {The competing effects of slow structural relaxations (aging) and deformation at constant strain rate on the shear yield stress {tau}{sup y} of simple model glasses are examined using molecular simulations. At long times, aging leads to a logarithmic increase in density and {tau}{sup y}. The yield stress also rises logarithmically with rate but shows a sharp transition in slope at a rate that decreases with increasing age. We present a simple phenomenological model that includes both intrinsic rate dependence and the change in properties with the total age of the system at yield. As predicted by the model, all data for each temperature collapse onto a universal curve.},
doi = {10.1103/PhysRevLett.95.225504},
journal = {Physical Review Letters},
number = 22,
volume = 95,
place = {United States},
year = {Fri Nov 25 00:00:00 EST 2005},
month = {Fri Nov 25 00:00:00 EST 2005}
}