Higher Mode Frequency Effects on Resonance in Machinery, Structures

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外文摘要：The complexities of resonance in multi-degree of freedom systems (multi-DOF) may be clarified using graphic presentations。 Multi-DOF systems represent actual systems， such as beams or springs， where multiple， higher order， natural frequencies occur。 Resonance occurs when a cyclic load is applied to a structure， and the frequency of the applied load equals one of the natural frequencies。 Both equations and graphic presentations are available in the literature for single degree of freedom (SDOF) systems， which describe the response of spring-mass-damper systems to harmonically applied， or cyclic， loads。 Loads may be forces， moments， or forced displacements applied to one end of a structure。 Multi-DOF systems are typically described only by equations in the literature， and while equations certainly permit a case by case analysis for specific conditions， graphs provide an overall comprehension not gleaned from single equations。 In fact， this collection of graphed equations provides novel results， which describe the interactions between multiple natural frequencies， as well as a comprehensive description of increased vibrations near resonance。

外文关键词：

Resonancemulti degree of freedomsingle degree of freedomtransmissibilitydynamic stressbending of beamscritical speeds

作者：

Robert A. Leishear

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作者单位：

Savannah River National LaboratoryAiken, South Carolina, 29803803-725-2832

会议名称：

ASME Pressure Vessels and Piping Division/K-PVP conference;PVP2010

会议地点：

Bellevue, WA(US);Bellevue, WA(US)

会议母体文献：

ASME pressure vessels and piping conference 2010

页码：

p.945-955

出版时间：

2010