%0 Journal Article
%T EffectofStrainRateonCompressionBehaviorofVinylEsterResinCasting
%A XIONGTao
%A YANGBin
%A XIONGJie
%A XUXian-jian
%A ZHOUKai
%A MAOMing-zhong
%J ²ÄÁϹ¤³Ì
%D 2006
%X Quasi-staticandhighstrainratecompressiveexperimentsonvinylestercastingwerecarriedoutbymeansofMTS(MaterialTestSystem)andHopkinsonbar.Thebehaviorsofthecompressedunstableandfractureoftheresincastingatdifferentstrainrateswereinvestigated.Theresultsindicatethattheresponsebehavioroftheresincastingiscontrolledbydifferentmechanismsatdifferentstrainrate,andsomemechanicalpropertiesofvinylestercastingarerate-dependentthecastingaredestroyedintoughnessmodelunderstrainrate3.3¡Á10-4¡«6.6¡Á10-3/s,whilethecastingaredestroyedinbrittlenessmodelunderstrainrate950¡«5800/s.Theyieldstress,yieldstrainenergydensityareallincreasedwiththeincreasingstrainratesatquasi-staticaswellasathighstrainrates.Whatisinterestingisthattheyieldstraindecreasedwiththestrainratesincreasingatquasi-staticwhileincreasedathighstrainrates.Itisconsideredthatthecastingoccurredforcinghighelasticdeformationathighstrainrates.Thedamageofthespecimensismainlycontrolledbyaxialstressbeforeunstabledeformation,whilemainlycontrolledbyshearstressafterunstabledeformation,andthendevelopedtofracturefinally.Thisprogressisrate-dependentthedevelopmentofthecracksinsidethecastingsincreasedwiththestrainrateincreasing.
%K vinylesterresin
%K quasi-static
%K highstrainrate
%K strainrateresponseandcrackdevelopment
%U http://jme.biam.ac.cn/CN/Y2006/V0/I5/63