Titlebook: Dynamics of Coupled Structures, Volume 4; Proceedings of the 3 Matthew S. Allen,Randall L. Mayes,Daniel Jean Rixe Conference proceedings 20

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Sandra L. Hofferth,Sally C. Curtinpers are often used by aero-engine manufacturers to reduce the resonant stresses and mitigate the risk of HCF. The presence of friction dampers makes the dynamics of the system highly nonlinear, due to the complex stick-slip and separation phenomena taking place at the contact interface. Due to this

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Sandra L. Hofferth,Sally C. Curtinhe main areas of difficulty is to know the excitation forces. The blocked force method allows vibration sources to be characterised independently using conventional measurements similar to those used in Transfer Path Analysis (TPA). A major advantage is that the blocked force data remains valid when

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Leisure Time Activities in Middle Childhoodof low order which approximates the behaviour of the original model. Thereby the boundary degrees of freedom (degrees of freedom shared with adjacent substructures) are kept and only the internal degrees of freedom of each substructure are reduced to a small number of generalized coordinates. If the

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ShaoHua Qin,ZiMu Li,QingSong Cai,JianPing Huion. Presented at the international modal analysis conference XXXV, Garden Grove, 2017), "Substructuring of a nonlinear beam using modal Iwan framework, Part I: Nonlinear Modal Model Identification", nonlinear modal models are constructed for an experimental substructure that represent the dynamics

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The Political and Economic Backgroundear structure is first divided into substructures and each substructure is reduced by taking a truncated number of fixed interface NNMs in addition to the proposed nonlinear constraint modes at each energy level. Using this basis a reduced quasi linear model of the substructures is computed at each