Effect of fiber cross section geometry on cyclic plastic behavior of continuous fiber reinforced aluminum matrix composites

Giugliano, D., Barbera, D. and Chen, H. (2017) Effect of fiber cross section geometry on cyclic plastic behavior of continuous fiber reinforced aluminum matrix composites. European Journal of Mechanics - A/Solids, 61, pp. 35-46. (doi:10.1016/j.euromechsol.2016.09.002)

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Abstract

This paper investigates the cyclic plastic behavior of continuous fiber-reinforced aluminum matrix composites (CFAMCs) with different shape of fiber cross section arranged in a square packing geometry. The 2D micromechanical FEM models, composed of elastic undamaged reinforcement perfectly bonded to an elastic-perfectly plastic matrix with a volume fraction equal to 30%, are subjected to off-axis constant macro stress and a cyclic temperature history. under such load conditions, the matrix undergoes large internal inelastic deformations potentially leading to internal crack initiation as well as macroscopic ratcheting. The computational method, the Linear Matching Method (LMM), is used throughout the analysis for the direct evaluation of shakedown, alternating plasticity and ratcheting behaviors. The effect of the matrix yield stress thermal degradation upon two common design limits, i.e., the reverse plasticity limit and the ratchet limit, is also investigated and discussed, including its influence on the off-axis low cycle fatigue crack initiation.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barbera, Dr Daniele
Authors: Giugliano, D., Barbera, D., and Chen, H.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:European Journal of Mechanics - A/Solids
Publisher:Elsevier
ISSN:0997-7538
ISSN (Online):1873-7285
Published Online:04 September 2016
Copyright Holders:Copyright © 2016 Elsevier Masson SAS
First Published:First published in European Journal of Mechanics - A/Solids 61: 35-46
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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