The Effects of Drilling Parameters on Bone Temperatures （A Finite Element Simulation

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1、TheEffectsofDrillingParametersonBoneTemperatures:AFiniteElementSimulationYuan-KunTuWei-HuaLuSuperintendent,E-DaHospitalDepartmentofMaterialEngineeringandI-ShouUniversityNationalPingtungUniversityofScienceandTechnologyKaohsiungHsien,TaiwanPingtung,Taiwaned100130@edah.org.twwhl@mail.npust.edu.twLi

2、-WenChen,Ji-SihCiouYung-ChuanChen*DepartmentofVehicleEngineeringDepartmentofVehicleEngineeringNationalPingtungUniversityofScienceandTechnologyNationalPingtungUniversityofScienceandTechnologyPingtung,TaiwanPingtung,Taiwanliwen@mail.npust.edu.twchuan@mail.npust.edu.tw(*correspondingauthor)Abstract

3、—Thetemperatureriseduringbonedrillingprovidesaforcemayreducethecorticaltemperaturesandtheirdurationusefulindexforevaluatingtheriskofpotentialdamagetotheoabove50C.Theresultsalsoshowedthatthetemperaturebone.Thisstudyusesadynamicelastic-plasticfiniteelementdifferencebetweenthemeasurementpositionx=0

4、.5andx=2.0modeltosimulatethethermalcontactbehaviorofadrillbitowhiledrillingthroughbone.Simulationsareperformedtommfromtheedgeofthedrilledholewasabout9C.TheinvestigatetherespectiveeffectsofthedrillingspeedandtheresultsinvestigatedbyAugustinetal.[6]showedthattheappliedforceonthetemperatureriseindu

5、cedwithinthebone.increaseindrilldiameteranddrillspeedcausedincreaseinTheresultsindicatethatthetemperatureriseisreducedbyabonetemperature.DavidsonandJames[7]developedahigherdrillingspeedandanincreasedappliedforce.Basedonthermo-mechanicalequationtopredictheatgenerationduetothenumericalresults,anem

6、piricalequationisproposedtodrillingandwerecoupledwithaheattransferfiniteelementestimatethepeakbonetemperaturegiventhevaluesofthesimulationtopredictthetemperatureriseintheboneduringappliedforceandthedrillingspeed.Themaximumdifferencedrilling.betweenthepeakbonetemperaturespredictedbytheproposedIne

7、xperimentalstudies,athermocoupleisusedtomeasureequationandthenumericalmodel,respectively,isshowntobethebonetemperatureriseduringdrilling.However,inlessthan3.5%.practice,thethermocouplecanbeplacednocloserthan0.5mmfromtheedgeo