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1、安徽工业大学毕业设计说明书（论文）英文原文NumericalinvestigationonmachiningglasswithCO2lasersJunkeJIAO1,2,XinbingWANG(✉)11WuhanNationalLaboratoryforOptoelectronics,HuazhongUniversityofScienceandTechnology,Wuhan430074,China2InstituteofIndustryTechnology,GuangzhouandChineseAcademyofSciences,Guangzhou511458,ChinaAbstractWh
2、enaglasssubstratewasirradiatedbythreedifferenttemporalshapesoflasersources,namely,line-time-shapelaser,triangle-time-shapelaser,andparabola-time-shapelaser,themathematicalmodelswereproposed,andthetemperaturedistributionandtheresultingthermalstresswerecalculatedbythefinite-element-method(FEM)software
3、ANSYS.Withthesethreetypesoflasershavingthesameoutputlaserenergy,theresultingthermalstressinducedintheglasssubstratewasanalyzed.Theresultsshowedthat,withthesameoutputlaserenergy,thethermalstressproducedinglassheatedbyline-time-shapelaserishigherthanthatproducedinglassheatedbytheothertwoshapesoflasers
4、.Keywordslasermachining,soda-limeglass,finite-element-method(FEM),ANSYS1IntroductionWiththedevelopmentoflasertechnology,manystudieshavebeencarriedoutoncuttingglasswithlasers[1–17].Lietal.[3]putforwardamathematicalmodeltoexplaintheheattransferofglassheatedbyalaserbeam.Weietal.[4]andTianetal.[5]invest
5、igatedthethermalbehaviorofglassheatedbyaCO2-laserbeamnumerically,andconcludedthattheresultingtemperaturedistributionwasstronglydependentonthespeedandtheparametersofthelaserbeam.Tsaietal.[6]studiedthethermalstressofaluminaceramicsubstratesirradiatedbyamovinglaserbeamandsomeexperimentswerecarriedoutto
6、investigatehowthecrackpropagationwasinfluencedbylaserpower,cuttingspeed,andspecimengeometry.Glasscanbecutbycontinuous-wavelasersintwodifferentways.Oneisthecontrolledfracturemethodandtheotherismeltingmeans.Theformerhasattractedmoreattentionandlotsofresearchhasbeenreportedinliteratures[7–16].Incontras
7、t,veryfewstudieshavebeenmadeindetailtoinvestigatecuttingglasswiththemeltingmethodexceptbyChui[17],duetothelowthermalconductivityandthebrittlenessoftheglass安徽工业大学毕业设计说明书（论文）material.Howtoreducethetherm
