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Non-linear damping of sodium fast reactor fuel pins: Experimental analysis and numerical modelisation

Author

Listed:
  • Thomas Catterou

    (DEC - Département d'Etudes des Combustibles - IRESNE - Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES) - CEA - Commissariat à l'énergie atomique et aux énergies alternatives)

  • Victor Blanc

    (DEC - Département d'Etudes des Combustibles - IRESNE - Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES) - CEA - Commissariat à l'énergie atomique et aux énergies alternatives)

  • Guillaume Ricciardi

    (LTHC - Laboratoire d'essais de Thermohydraulique et d'Hydromécanique analytique du Coeur et des circuits - STCP - Service de Technologie des Composants et des Procédés - DTN - Département Technologie Nucléaire - IRESNE - Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES) - CEA - Commissariat à l'énergie atomique et aux énergies alternatives)

  • Stéphane Bourgeois

    (LMA - Laboratoire de Mécanique et d'Acoustique [Marseille] - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

  • Bruno Cochelin

    (LMA - Laboratoire de Mécanique et d'Acoustique [Marseille] - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

Abstract

The fuel pins are the first containment barriers of a sodium fast reactor, and their integrity have to be preserved during dynamical loads, like earthquake events but also during the transport and handling of fuel sub-assemblies. The purpose of this paper is to understand the dynamical behavior of the fuel pins. A dedicated test bed has been used. Three different regimes of damping, dry or viscous depending of the displacement amplitude, are identified during the tests on fuel pins and explained by a simple analytical model. A complex finite element model is proposed and confronted to the experiment and lead to a better comprehension of the fuel pin non linear damping.

Suggested Citation

  • Thomas Catterou & Victor Blanc & Guillaume Ricciardi & Stéphane Bourgeois & Bruno Cochelin, 2020. "Non-linear damping of sodium fast reactor fuel pins: Experimental analysis and numerical modelisation," Post-Print cea-03132475, HAL.
    • Handle: RePEc:hal:journl:cea-03132475
    DOI: 10.1016/j.nucengdes.2020.110643
    as

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