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Wear Behavior of a Bio-inspired Bearing for off-center Loads

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Abstract

Misalignment is one of the most common causes of wear in bush bearings. Design improvements have been proposed by many researchers. Unfortunately, it did not efficiently reduce the misalignment. Classic geometrical designs sometimes reach their limits. For this reason, a bio-inspired design is proposed to solve the impediment. In this article, a bio-inspired bearing suited to misalignment was tested and compared to a classical bush bearing. The contact pressures of both bearings were compared with static Finite Element (FE) simulations for off-center load. Due to the complex shape of the involved contact, the performances of both bearings were also studied over time. Their wear behaviors were predicted with a numerical method. The methodologies emplaced to simulate the wear were described in this paper. Particularly, the wear coefficient determination obtained by experimental testing was detailed. The pressure value, the contact zone and the wear depth were compared and discussed. The wear results for the classical bearing are in accordance with the literature. The simulations show a deeper wear on the classical bush bearing than on the bio-inspired bearing. This leads to a longer period of service life for the bio-inspired bearing.

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Acknowledgment

This work was supported by Airbus Helicopters and Aix-Marseille University. The experimental devices were founded by: European Community, French Ministry of Research and Education and Aix-Marseille Conurbation Community.

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Authors and Affiliations

  1. Aix-Marseille Université, CNRS, Centre National de la Recherche Scientifique, ISM, Institut des Sciences du Mouvement, Marseille, 13009, France

    Delphine Sysaykeo, Jean-Marc Linares & Emmanuel Mermoz

  2. Advanced concepts and Dynamic systems architecture department, Airbus Helicopters, Aeroport International Marseille Provence, Marignane, 13700, France

    Delphine Sysaykeo & Emmanuel Mermoz

Authors
  1. Delphine Sysaykeo
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  2. Jean-Marc Linares
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  3. Emmanuel Mermoz
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Correspondence to Delphine Sysaykeo.

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Sysaykeo, D., Linares, JM. & Mermoz, E. Wear Behavior of a Bio-inspired Bearing for off-center Loads. J Bionic Eng 17, 1251–1262 (2020). https://doi.org/10.1007/s42235-020-0107-3

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  • DOI: https://doi.org/10.1007/s42235-020-0107-3

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