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1、ARTICLEINPRESSSoilDynamicsandEarthquakeEngineering](]]]])]]]–]]]ContentslistsavailableatScienceDirectSoilDynamicsandEarthquakeEngineeringjournalhomepage:www.elsevier.com/locate/soildynAnalyticalandnumericalstudyofP-waveattenuationinrockshelterlayera,b,bcZ.L.Wa
2、ng,H.Konietzky,R.F.ShenaDepartmentofModernMechanics,UniversityofScienceandTechnologyofChina,Hefei230027,ChinabInstitutfu¨rGeotechnik,TechnischeUniversita¨tBergakademieFreiberg,Freiberg09596,GermanycCentreforSoftGroundEngineering,NationalUniversityofSingapore,Si
3、ngapore119260,SingaporearticleinfoabstractArticlehistory:TheprotectionofundergroundstructuresagainstdynamicloadingshaslongbeenatopicofgreatReceived6December2008interestindefenseengineering.Thispaperfocusesonthefar-fieldblast-wavepropagationandReceivedinrevisedfo
4、rmattenuationinrockshelterlayerwithaninclusionorfilledmedium.First,theeffectofsingleinclusion4May2009onwaveattenuationisexploredanalyticallyassumingthattheinterfacesbetweenrockandtheAccepted5May2009inclusionarecompletelyconsolidated.Theformulaeforthestrengthofto
5、taltransmittedstress-andvelocity-waveaftertheinclusionaresubsequentlypresented.Atlast,numericalstudiesontheKeywords:attenuationofone-dimensionalP-waveinrockembeddedwithartificialcavity,steelplateandnaturalRockshelterlayerjointarecarriedout.Theattenuationrulesfor
6、variousscenariosarediscussedindetailinthispaperInclusionwhichcanprovideusefulguidelinestothedesignofintelligentdefensestructures.Waveattenuation&2009ElsevierLtd.Allrightsreserved.AnalyticalsolutionNumericalanalysis1.Introductionlayer,butthereisalimitationtosuch
7、thicknessincreaseinpractice.Hence,pursuingstudiesontheefficacyofnovelCivildefensestructuresareusuallyconstructedbeneaththeintelligentdefensestructuresondamping,dissipatinganddecay-groundtoprovideprotectionagainstthedestructiveeffectsofingblastwavessoastoimprovet
8、heircapacitytovariouskindsofblasts.Apartfromthebasicobjectiveofpreventingfailureoftheshells,bombsandmissileshasbeenacoresubjectinthedefensestructureitself,amajorconcernisthe
