Meso-StructureandElasticPropertiesof2.5DBraidedComposites

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Meso-StructureandElasticPropertiesof2.5DBraidedComposites
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Abstract:

Basedontheobservationofthemeso-structureof2.5Dbraidedcomposites,athree-dimensionalmechanical modelispresented,whichismorestableandisabletoreflectthestructureofthiscomposites.Therelationshipbetweenthe fibervolumeandgeometricparametersisdeducedbyusingthismodel.Thestiffnessaveragemethod(SAM)andfiniteelementmethod(FEM)areadoptedtopredicttheeffectivemechanicalproperties.Theelasticconstantsvaryingwiththechange offibervolume,warpdensityandweftdensityareanalyzed.Bothofthepredictedresultsshowthecamberangledoesnot noticeablyaffecttheelasticproperties,buthasanotableimpactonthemeso-stressfield.ThetheoreticalpredictionisinaccordancewiththeFEMresults,whichverifiesthevalidityofthemodel

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Online: November 28,2016
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