简介:LetGbeanonabelianfinitegroup.ThenIrr(G/G′)isanabeliangroupunderthemultiplicationofcharactersandactsonthesetofnon-linearirreduciblecharactersofGviathemultiplicationofcharacters.Thepurposeofthispaperistoestablishsomefactsabouttheactionoflinearcharactergrouponnon-linearirreduciblecharactersanddeterminethestructuresofgroupsGforwhicheitheralltheorbitkernelsaretrivialorthenumberoforbitsisatmosttwo.Usingtheestablishedresultsonthisaction,itisveryeasytoclassifygroupsGhavingatmostthreenomlinearirreduciblecharacters.
简介:聚氨酯,是在论文介绍的组成的研究的题目,基于Bayer生产的oligocarbonatediolsDesmophenC2100?。组成的建模考虑到作为intervertebral圆盘prostheses的inlay使用材料被执行。聚氨酯被假定是非线性地viscohyperelastic,各向同性、不可压缩。组成的方程从要求的紧张精力功能被导出。橡皮和rheological常数根据试验性的测试被识别,即松驰测试和monotonic以二不同紧张率的单轴的测试,即\(\dot\lambda=0.1\)min1和\(\dot\lambda=1.0\)min1。僵硬张肌被导出并且介绍给Abaqus吗?有限元素(FE)软件以便数字地验证组成的模型。常数鉴定和数字实现的结果证明导出的组成的方程是充分足够的为聚氨酯材料的压力紧张行为建模。
简介:NON-LINEARELASTICTHEORYOFRECTANGULARRETICULATEDSHALLOWSHELLSTRUCTURESNieGuo-hua(聂国华)(DepartmentofEngineeringMechanics,TongjiU...
简介:Thefreenon-linearvibrationofaxiallymoving,elastic,andtensionedbeamsonfixedsupportsisinvestigatedinthispaper.Twotypesofnon-linearity,namely,thedifferentialtypeandintegro-differentialtype,areanalyzed.Approximatesolutionsaresoughtusingthemethodofmultiplescales.Thecontributionofnon-linearitytotheresponseincreaseswiththeaxialspeed,andgrowsmostrapidlynearthecriticalspeed.Ithasbeenfoundthatthedifferentialtypenonlinearityisstrongerthantheintegro-differentialtypenon-linearitybyanalyzingthenon-lineareffectsonnaturalfrequencies.
简介:Thispaperpresentsthelowerboundsandupperboundsforthemeanvalueandvarianceofdistancedistributionofnon-linearcodesinGF(q).Bypresentingseveralexamples,itisshownthattheseboundscouldbeachieved.
简介:Nanocapacitors和nonvolatile铁电体随机存取记忆要求nanoscale有铁电体性质的薄电影涂层。一维的铁电体nanofibers由于记忆设备元素的维数的减少将减少探讨并且有点增加存储能力的事实在铁电体记忆设备被使用。展出铁电体性质的新奇ZnO/BaOnanocomposite纤维被大音阶的第五音从大音阶的第五音胶化线路导出的electrospinning在非编织的网孔形式准备了。平均直径的薄圆柱的nanofibers100nm被获得了,他们的形态学被SEM和AFM图象证实。在electrospinning过程,纤维形态学上的工作距离的效果被学习,它证明没有祷告和减少,在11和15厘米之间的那工作距离能在这在工作距离生产纤维范围增加纤维直径。粉末XRD被用来鉴别阶段和EDX分析证实了ZnO/BaO的存在。绝缘、非线性的光性质也被学习了。绝缘的研究证明ZnO/BaO合成nanofibers在323K从铁电体经历阶段转变到paraelectric。
简介:AccordingtotheanalyticalcharacteristicsofcubicBsplinefunction,suchascompactnessanddiscontinuoussmoothness,twomethods,GlobalintegralmethodandAssemblingmethodareproposedtocalculatethenon-linearstiffnessmatrixinthesplinefiniteelementmethod.TheGlobalintegralmethodtransformstheintegraloftheproductofsplinefunctionsintothesumofboundarydataoftheproductbyintegralbyparts.TheAssemblingmethodusesthecompactnesscharacteristicsofthesplinefunction,reducesthen+3orderstiffnessmatrixinunitintervaltothe4ordermatrix,andthenobtainstheglobalmatrixbyassemblingthesmallones.Thetwoproposedmethodsareclearintheoryandeasytoberealizedbycomputerprogram,whichcaneffectivelyimprovetheefficiencyofthealgorithmfornonlinearsplineelementmethod.
简介:Twenty10-hydrocarbylacridonesand2-methylacridone,1-hydroxyacridoneweresynthesizedfromacridoneandcharacterizedbymp,IR,UV,1HNMRandMS.UsingNd:YAGasalasersource,thesecond-orderharmonicgeneration(SHG)valuesoftheacridonederivativesweremeasuredinpowderstateascomparedwithureapowder.TheresultsshowedthattheSHGvaluesofsomeof10-hydrocarbylacridoneswerehigherthanthatofurea,whileotherswerelower.Althoughthehydrocarbylsubstituents(R)attachedtonitrogenatomofacridoneweredifferentinsizeandelectronegativity,theyhadalittleeffectontheSHGvaluesof10-hydrocarbylacridones.Substituents,suchasmethylorhydroxygroupconnectedtothephenylring,causedalittleeffectontheSHGvalues,too,comparedwithacridone.TheabilityofRtopushelectrontowardthenitrogenatomortopullelectronfromthenitrogenatomplayanimportantroleonthemaximumwavelengthesofUV-visibleabsorptionofacridonederivatives.
简介:TheclassesofthemultivariatefunctionswithboundedmodulionRdandTdaregivenandtheiraverageσ-widthsandnon-linearn-widthsarediscussed.Theweakasymptoticbehaviorsareestablishedforthecorrespondingquantities.