学科分类
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1 个结果
  • 简介:ThetransientresponsetolongitudinalimpactofflexiblerodswithHertzcontactiscloselyrelatedtotheextentofdeformationswithdifferentimpactparameters.BymeansofLS-DYNA,fordifferentradiusanddifferentspeeds,thelongitudinalimpactofahammerwitharoundedendonadrillrodisnumericallysimulatedinthisarticle.Simulationsdemonstratethatthereisanobviousdif-ferencebetweenanalyticalsolutionandnumericalsolutiononconditionofshortcurvatureradius.Inthecircumstancecontactpressureincreases,theboundaryoftheyieldzoneexceedsthatofthecontactzone,andthesignificantplasticdeformationreducestheintensityofcontactpressurepulse.Contactforce-timecurvesinloadingandunloadingphasesshiftdown.Thenumericalsolutionisingoodagree-mentwithanalyticalsolutiononconditionoflargecurvatureradiusandimpactspeeds.Thedeforma-tionofyieldregionisconstrainedbythesurroundingelasticregionandnosignificantplasticdeforma-tionappears.

  • 标签: 数值模拟 瞬态响应 柔性体 HERTZ接触 LS-DYNA 赫兹