含有徑向裂紋的界面圓形彈性?shī)A雜對(duì)SH波的散射.pdf

1、分類(lèi)號(hào)：UDC：工學(xué)碩士學(xué)位論文密級(jí)：編號(hào)：——含有徑向裂紋的界面圓形彈性?shī)A雜對(duì)SH波的散射碩士研究生指導(dǎo)教師學(xué)位級(jí)別學(xué)科、專(zhuān)業(yè)所在單位論文提交日期論文答辯日期學(xué)位授予單位：許慶占：齊輝教授：工學(xué)碩士：結(jié)構(gòu)工程：建筑工程學(xué)院：2007年1月：2007年1月：哈爾濱工程大學(xué)哈爾濱工程大學(xué)碩士學(xué)位論文AbstractThescatteringproblemsofSHwavesbycircularelasticinclusionwithdia

2、metricalcrocksinhomogenousmediumaswellasinterfacecircularelasticinclusionwithdiametricalcracksarestudiedbyusingtheGreenfunctionmethodinthispaperForthemodelofcircularelasticinclusionwithdiametricalcracksinhomogenousmedium

3、，thesolutionsofdynamicstressintensityfactorsatcracktipareobtainedandforthemodelofinterfacecircularelasticinclusionwithdiametricalcracks，thesolutionsofdynamicstressintensityfactorsatcracktipandfarfieldareobtainedneGreenfu

4、nctionisanessentialsolutionofdisplacementfieldforanelastichalfspacewithahalfcylindricalinclusionimpactedbyoutplaneharmoniclinesourceloadingathorizontalsurfaceThemodeloftheproblemiscomposedoftwohalfspaceswithhalfcylindric

5、alinclusionHorizontalsurfacesofthetwohalfspacesareloadedwithundeterminedantiplaneforcesinordertosatisfycontinuityconditionsatlinkingsection，orwithsomecertainforcestoappearcracksAseriesofFredholmintegralequationsofthefirs

6、tkindfordeterminingtheunknownforcesCallbesetupthroughcontinuityconditionsthatexpressedbyuseoftheGreenfunctionWhenthesolutionsofdynamicstressintensityfactorsareconsidered，theaddedforceatcracktipcanbereplacedbyexpressionin

7、cludingdynamicstressintensityfactorthentheintegralequationsfordeterminingtheunknownforcesCallbetransformedintoalgebraicequationsandsolvednumericallyWhenthesolutionsoffarfieldareconsidereddisplacementmodeofscatteredwaveat

8、farfieldandscatteringcrosssectionarededucedbasingtheintegralequationsfordeterminingtheunknownforcesAtlast，someexamplesandnumericalresultsareillustratedTheinfluencesofwavenumberincidentwaveangle，geometricfeaturesizeandcom