Micromechanical modelling on cyclic plastic behaviour of unidirectional fiber reinforced aluminium matrix composites

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Abstract

This work investigates the cyclic plastic behavior of continuous fiber-reinforced aluminum matrix composites (CFAMCs) with different volume fractions of fiber up to a maximum value of 63.61% using micromechanical approach of modeling. Shakedown, ratcheting limit and load-bearing capacity have been studied. The FEM models, based on two dimensional micromechanical representative volume element (RVE) with a square packing geometry, were subjected to constant macro stress under off-axis loading condition and thermal cycling conditions. A number of direct numerical methods, under the Linear Matching Method (LMM) framework, are adopted for the determination of limit load, reverse plasticity limit and ratchet limit of AMCs. The typical micromechanical model adopted in all analysis consists of continuous fibers with circular cross section, embedded in an aluminum matrix. Two most common reinforcing materials alumina and silicon carbide are investigated. Various factors that affect shakedown and ratcheting behaviors of composites are analyzed and discussed, including effects of fiber volume fraction and temperature on the AMC’s low cycle fatigue life.
LanguageEnglish
JournalEuropean Journal of Mechanics - A/Solids
Early online date1 Apr 2016
DOIs
Publication statusE-pub ahead of print - 1 Apr 2016

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Aluminum
plastics
Plastics
aluminum
composite materials
fibers
Fibers
Composite materials
matrices
Volume fraction
reinforcing materials
fiber volume fraction
cycles
Aluminum Oxide
fatigue life
Thermal cycling
Load limits
Bearing capacity
plastic properties
Silicon carbide

Keywords

  • shakedown
  • ratchetting
  • cyclic plasticity
  • metal matrix composite (MMC)
  • linear matching method (LMM)

Cite this

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title = "Micromechanical modelling on cyclic plastic behaviour of unidirectional fiber reinforced aluminium matrix composites",
abstract = "This work investigates the cyclic plastic behavior of continuous fiber-reinforced aluminum matrix composites (CFAMCs) with different volume fractions of fiber up to a maximum value of 63.61{\%} using micromechanical approach of modeling. Shakedown, ratcheting limit and load-bearing capacity have been studied. The FEM models, based on two dimensional micromechanical representative volume element (RVE) with a square packing geometry, were subjected to constant macro stress under off-axis loading condition and thermal cycling conditions. A number of direct numerical methods, under the Linear Matching Method (LMM) framework, are adopted for the determination of limit load, reverse plasticity limit and ratchet limit of AMCs. The typical micromechanical model adopted in all analysis consists of continuous fibers with circular cross section, embedded in an aluminum matrix. Two most common reinforcing materials alumina and silicon carbide are investigated. Various factors that affect shakedown and ratcheting behaviors of composites are analyzed and discussed, including effects of fiber volume fraction and temperature on the AMC’s low cycle fatigue life.",
keywords = "shakedown, ratchetting, cyclic plasticity, metal matrix composite (MMC), linear matching method (LMM)",
author = "Dario Giugliano and Haofeng Chen",
year = "2016",
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journal = "European Journal of Mechanics - A/Solids",
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T1 - Micromechanical modelling on cyclic plastic behaviour of unidirectional fiber reinforced aluminium matrix composites

AU - Giugliano, Dario

AU - Chen, Haofeng

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N2 - This work investigates the cyclic plastic behavior of continuous fiber-reinforced aluminum matrix composites (CFAMCs) with different volume fractions of fiber up to a maximum value of 63.61% using micromechanical approach of modeling. Shakedown, ratcheting limit and load-bearing capacity have been studied. The FEM models, based on two dimensional micromechanical representative volume element (RVE) with a square packing geometry, were subjected to constant macro stress under off-axis loading condition and thermal cycling conditions. A number of direct numerical methods, under the Linear Matching Method (LMM) framework, are adopted for the determination of limit load, reverse plasticity limit and ratchet limit of AMCs. The typical micromechanical model adopted in all analysis consists of continuous fibers with circular cross section, embedded in an aluminum matrix. Two most common reinforcing materials alumina and silicon carbide are investigated. Various factors that affect shakedown and ratcheting behaviors of composites are analyzed and discussed, including effects of fiber volume fraction and temperature on the AMC’s low cycle fatigue life.

AB - This work investigates the cyclic plastic behavior of continuous fiber-reinforced aluminum matrix composites (CFAMCs) with different volume fractions of fiber up to a maximum value of 63.61% using micromechanical approach of modeling. Shakedown, ratcheting limit and load-bearing capacity have been studied. The FEM models, based on two dimensional micromechanical representative volume element (RVE) with a square packing geometry, were subjected to constant macro stress under off-axis loading condition and thermal cycling conditions. A number of direct numerical methods, under the Linear Matching Method (LMM) framework, are adopted for the determination of limit load, reverse plasticity limit and ratchet limit of AMCs. The typical micromechanical model adopted in all analysis consists of continuous fibers with circular cross section, embedded in an aluminum matrix. Two most common reinforcing materials alumina and silicon carbide are investigated. Various factors that affect shakedown and ratcheting behaviors of composites are analyzed and discussed, including effects of fiber volume fraction and temperature on the AMC’s low cycle fatigue life.

KW - shakedown

KW - ratchetting

KW - cyclic plasticity

KW - metal matrix composite (MMC)

KW - linear matching method (LMM)

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