Thermo-elastic analysis of a non-axisymmetrically heated FGPM hollow cylinder under multi-physical fields

چکیده مقاله

This paperinvestigatestheelectro-thermalnonlocalwavepropagationof fluid-conveyingsingle-walled Boron Nitridenanotubes(SWBNNTs)usingnonlocalpiezoelasticitywithsurfacestress,initialstressand Knudsen-dependent flowvelocityeffect.SWBNNTisembeddedinavicsoelasticmediumwhichis simulated asvisco-Pasternakfoundation.UsingEuler–Bernoulli beam(EBB)model,Hamilton'sprinciple and nonlocalpiezoelasticitytheory,thehigherordergoverningequationisderived.Adetailed parametric studyisconducted,focusingonthecombinedeffectsoftheelectricparameters,viscoelastic medium, initialstress,surfacestress,Knudsennumber(Kn) andsmallscaleonthewavepropagation behaviourofthe fluid-conveyingSWBNNT.Theresultsshowthatforsmallervaluesofwavenumberthe dispersion relationfordifferent fluid viscositiesseemstobesimilar.Atthehighervaluesofwave numbers, increaseinthewavefrequencyvaluesisremarkableduetoincreasein fluid viscosity.The electric field asasmartcontroller,surfaceeffect,initialstress,temperaturechangeandslipvelocity effect havesignificant roleonthewavefrequency.Theresultsofthisworkishopedtobeofuseindesign and manufacturingofsmartMEMS/NEMSinadvancedmedicalapplicationssuchasdrugdelivery systemswithgreatapplicationsinbiomechanics.