FRACTIONAL ORDER MODELLING OF THE CUMULATIVE DEFORMATION OF GRANULAR SOILS UNDER CYCLIC LOADING

(整期优先)网络出版时间:2015-06-16
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Tomodelthecumulativedeformationofgranularsoilsundercyclicloading,amathematicalmodelwasproposed.Thepowerlawconnectionbetweentheshearstrainandloadingcyclewasrepresentedbyusingfractionalderivativeapproach.Thevolumetricstrainwascharacterizedbyamodifiedcyclicflowrulewhichconsideredtheeffectofparticlebreakage.Allmodelparameterswereobtainedbythecyclicandstatictriaxialtests.Predictionsofthetestresultswereprovidedtovalidatetheproposedmodel.Comparisonwithanexistingcumulativemodelwasalsomadetoshowtheadvantageoftheproposedmodel.