多个脱胶界面圆形夹杂对sh波的散射

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1、～，／：▲～r^P·qGreen函数时，给出了具体算例，讨论了夹杂周围的动应力集中系数和水平表面位移幅值。又进一步利用Green函数，在界面上构造出直裂纹，研究了SH对脱胶夹杂及其边缘裂纹和脱胶夹杂及直线型裂纹两种情况下裂纹尖端的动应力强度因子。最后以算例讨论了入射波数对不同介质的动应力强度因子的数值结果。关键词：SH波散射；界面；脱胶；Green函数法；动应力强度因子elasticinclusionsbySH-waveisresearchedbycomplexvariablemethodandtheGreen’SFunctionm

2、ethod．Tosolvethisproblem，twospecificGreen’SFunctionsunderspecificboundaryareconstructedfirstly,whicharethescatteringofout-planelinesourceloadbymultiplecylindricalinclusionsinhalfspaceandthescatteringofout-planelinesourceloadbymultiplesemi—cylindricalcanyonsinhalfspace．

3、Thendividethewholespaceintotwopartsalongtheinterfacewiththemethodofdividingthedistrict．Andastandingwaveineachinclusionandthescatteringwavesinparticularformbymultiplesemi-circularboundariescanbeconstructedseperately．Re-conjuctthetwopartalongtheinterfacetogetherandestabl

4、ishintegralequationsabouttheGreen’Fuctionsandunknownfuntionsaboutexternalforceswiththecontinuousconditionofthedisplacementandstressaroundthecommonboundary．Usenumericalmethodtosolvetheequations．Intheend，asexamples，numericalresultsofdynamicstressconcentrationfactoraround

5、theinclusionsandtheinfluencesoftheincidentwaveondifferenceparametersofmediatorsarepresentedanddiscussed．Inaddition，someexamplesaregivenandresultsofdynamicstressconcentrationfactoraroundtheinclusionandthegroundvibrationatthehorizontalsurfacearepresentedanddiscussedafter

6、constructingtheGreen’Fuctionofthescatteringofout—planelinesourceloadbymultiplecylindricalinclusionsinhalfspace．AnddofurherresearthinthescateringofSH-wavebymultipledebondinginterfacecylindricalinclusionsandlinearcracksoriginatingatthedebondingtipneartwo-phasemediums，弱we

7、ll弱thescateringofSH-wavebymultipledcbondinginterfacecylindricalinclusionsandHImodeofinterfacecracksbyusingtheGreen’Fuction．Intheendsomeresultsofdynamicstressintensifyfactorarediscussed．Keywords：ScatteringofSH-wave；interface；debonding；Green’Sfunction；dynamicstressintens

8、ityfactor’▲多个脱胶界面圆形夹杂对SH波的散射目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯“11．1课题背景及研究意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2弹性动力学的