Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 405, Issue 1-2, Pages 287-295Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2005.06.032
Keywords
polymer-matrix composites; particle-reinforcement; stress concentrations; finite element analysis; random unit cell
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The effects of particle arrangement on stress concentrations within particle-reinforced composites are investigated. Both periodic and random particle arrangement models are employed to calculate stress concentration factors for a composite with a filler volume fraction of 0.3. A self-consistent scheme is used to minimize boundary effects on stress concentrations. It is found that a random particle arrangement predicts significantly greater stress concentrations than periodic particle arrangements because of particle clustering. The stress concentration factor does not have a direct relationship with filler volume fraction, and the stress concentration surrounding a particle is dominated by the nearest-neighbor particle. (c) 2005 Elsevier B.V. All rights reserved.
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