Finite element analysis of the thermal residual stresses of SiC particle reinforced aluminum composite

Abstract:In civil engineering an increasing demand for lightweight concretes exists, because a lower density results in significant benefits for structural elements. Polystyrene foams may be used in the fabrication of lightweight concretes with a large density range. In this work, the influence of fine grained sand (<1mm) additions of 5, 10 and 20% on the properties of a composite consisted of cement with styrofoam inclusions of 20, 40 and 60% has been studied. Finite element analysis (FEA), using Abaqus software package, was carried out to predict numerically the effect of particle size and polystyrene fraction on the compressive strength of the composite materials. The composites were characterized by their density, porosity and compressive strength after 28 days. The density of the composites varied between 1250 and 1600 kg/m 3 with a strength of 18 and 9 MPa for 20 and 60% of Styrofoam inclusions, respectively. The increase of the fraction of sand from 5 to 20% promoted the increase in bulk density and modulus of the composites. The effect of the addition of sand on the porosity and mechanical strength exhibited variation indicating the packing factor of the particles as the main responsible for this behavior. Based on the finite element analysis the amount of the stress in the composite increases with the increasing particle diameter. The composites investigated exhibited a uniform distribution of the polystyrene spheres, allowing their use for non-structural purposes.

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“…(14 and 15), the normal stresses are concentrated at the particle-matrix interface. The same results were reported by Bouafia [19]. …”

Section: Finite Element Analysissupporting

confidence: 91%

Experimental and Numerical Analysis of Cement Based Composite Materials with Styrofoam Inclusions

Strecker¹,

Silva²,

Filho³

2016

TOBCTJ

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“…The probability for particle fracture decreases and matrix failure near the interface or interfacial decohesion becomes more prominent [29,34]. The ductility for reinforced material with smaller particles is increased due to their smaller interparticle spacing, and therefore a more homogeneous distribution of the plastic strain in the matrix [27,30].…”

Section: Tensile Testingmentioning

confidence: 98%

“…Larger particles provide a minor resistance against particle failure [4,15,25] and fatigue cracks initiate preferably at them due to the higher local stress concentration [12,17,26]. In contrast, for composites with smaller particles, the stress distribution is more homogeneous due to minor local stress concentrations and smaller interparticle spacing [27]. With increasing temperature, interface decohesion is generally more likely to occur, but larger particles are still prone to fracture [28][29][30].…”

Section: Introductionmentioning

confidence: 96%

“…An increase in particle volume fraction and a decrease in particle size lead to an enhancement of this effect, and therefore to a further increase in strength and a decrease in ductility [1,32]. The minor ductility of the reinforced material and the further decrease with an increase in particle volume fraction is caused by the major residual stresses induced by the reinforcement component [27].…”

Section: Tensile Testingmentioning

confidence: 99%

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Temperature and Particle Size Influence on the High Cycle Fatigue Behavior of the SiC Reinforced 2124 Aluminum Alloy

Winter

Hockauf

Lampke

2018

Metals

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Abstract:In this work the high cycle fatigue behavior of a particulate reinforced 2124 aluminum alloy, manufactured by powder metallurgy, is investigated. SiC particles with a size of 3 µm and 300 nm and a volume fraction of 5 and 25 vol %, respectively, were used as reinforcement component. The present study is focused on the fatigue strength and the influence of particle size and temperature. Systematic work is done by comparing the unreinforced alloy and the reinforced conditions. All of the material conditions are characterized by electron microscopy and tensile and fatigue testing at room temperature and at 180 • C. With an increase in temperature the tensile and the fatigue strength decrease, regardless of particle size and volume fraction due to the lower matrix strength. The combination of 25 vol % SiC particle fraction with 3 µm size proved to be most suitable to achieve a major fatigue performance at room temperature and at 180 • C. The fatigue strength is increased by 40% when compared to the unreinforced alloy, as it is assumed the interparticle spacing for this condition reaches a critical value then.

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“…Schmauder et al [2003] studied the influence of thermal residual stress on local as well as global properties of MMCs. Bouafia et al [2012] studied the effect of particle spacing and volume fraction on the level of thermal residual stress in MMCs.…”

Section: Introductionmentioning

confidence: 99%

Micromechanical Analysis of SiC/Al Metal Matrix Composites: Finite Element Modeling and Damage Simulation

Qing

Liu

2015

Int. J. Appl. Mechanics

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The influence of interface strengths and microstructures on the strength and damage of SiC particle reinforced aluminum Metal Matrix Composite (MMC) is investigated under uniaxial tensile, simple shear, biaxial tensile and combined tensile and shear loadings. An algorithm to generate automatically the microstructural models of MMCs with random distribution of particle shapes, dimensions, orientations and locations is proposed and implemented within Matlab. A damage model based on the stress triaxial indicator is developed to simulate the ductile failure of metal matrix, the other damage model based on the maximum principal stress criterion is developed to simulate the brittle failure of SiC particles, and 2D cohesive element is utilized to describe interface decohesion between matrix and particles. A series of numerical experiments are performed to study the macroscopic stress-strain relationships and microscale damage evolution in MMCs under different loading conditions.

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Finite element analysis of the thermal residual stresses of SiC particle reinforced aluminum composite

Cited by 47 publications

References 38 publications

Experimental and Numerical Analysis of Cement Based Composite Materials with Styrofoam Inclusions

Experimental and Numerical Analysis of Cement Based Composite Materials with Styrofoam Inclusions

Temperature and Particle Size Influence on the High Cycle Fatigue Behavior of the SiC Reinforced 2124 Aluminum Alloy

Micromechanical Analysis of SiC/Al Metal Matrix Composites: Finite Element Modeling and Damage Simulation

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