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Interface reduction methods for mechanical systems with elastohydrodynamic lubricated revolute joints

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Abstract

In this contribution, three different reduction methods for elastic structures with lubricated interfaces are presented and compared with each other. While for the first two methods, classical reduction strategies from component mode synthesis are applied, for the third method, a dual reduction basis is used, consisting of vibration modes of the free floating structure, attachment modes and residual modes. Within this new dual approach, it is shown how the residual modes can be obtained by applying pressure distributions of analytical solutions of the hydrodynamic equations. The described methods are compared for two classical simulation example—for a one-sided elastohydrodynamic lubricated joint of a slider–crank mechanism in a floating frame of reference formulation as well as for an elastic rotor in a flexible journal bearing.

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Authors and Affiliations

  1. Chair of Applied Mechanics, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany

    Andreas Krinner & Daniel J. Rixen

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  1. Andreas Krinner
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  2. Daniel J. Rixen
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Correspondence to Andreas Krinner.

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Krinner, A., Rixen, D.J. Interface reduction methods for mechanical systems with elastohydrodynamic lubricated revolute joints. Multibody Syst Dyn 42, 79–96 (2018). https://doi.org/10.1007/s11044-017-9575-6

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  • DOI: https://doi.org/10.1007/s11044-017-9575-6

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