摘要
Inthispaper,howtocomputetheeigenfrequenciesofthestructurescomposedofaseriesofinclinedcablesisshown.Thephysicsofaninclinedcablecanbecomplicated,sosolvingthedifferentialequationsevenapproximatelyisdifficult.However,ratherthansolvingthesystemof4first-orderequationsgoverningthedynamicsofeachcable,thegoverningequationsareinsteadconvertedtoasetofequationsthattheexteriormatrixsatisfies.Therefore,theexteriormatrixmethod(EMM)isusedwithoutsolvingtheoriginalgoverningequations.Eventhoughthisproducesasystemof6first-orderequations,thesimpleasymptotictechniquestofindthefirstthreetermsoftheperturbativesolutioncanbeused.Thesolutionscanthenbeassembledtoproducea6×6exteriormatrixforacablesection.Thematricesforeachcableinthestructurearemultipliedtogether,alongwiththeexteriormatricesforeachjoint.Therootsoftheproductgiveustheeigenfrequenciesofthesystem.
出版日期
2015年11月21日(中国期刊网平台首次上网日期,不代表论文的发表时间)