简介：Combinedmulti-bodydynamicswithstructuraldynamics,anewdiscreteelementwithflexibleconnector,whichisapplicablefor3-Dbeamstructures,isdevelopedinthispaper.Boththegeneralizedelasticcoefficientmatrixoftheflexibleconnectorandthemassmatrixofdiscreteelementmaybeoff-diag-onalinageneralcase.Thezero-lengthrigidelementisintroducedtosimulatethenodeatwhichmultipleel-ementsarejointedtogether.Itmayalsobeeffectivewhentheaxesofadjacentelementsarenotinthesameline.Theexamplesforeigenvaluecalculationshowthatthemodelissuccessful.Itcanbeextendedtothegeometricnonlinearresponseanalysis.
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