The transmissivity of metal-metal sealing joints is investigated experimentally and compared to predictions obtained by modeling. The focus is laid upon a wavy surface contacting a flat rigid part, representative of a seat-to-plug contact in an internal sealing valve encountered in nuclear power plants for instance. Experimental transmissivities are obtained from water leak-rate and pressure drop measurements carried out on a model ring-shape sample seat holding a controlled wavy defect and pressed against a rigid flat plug with a controlled normal load. The sample seat surface is manufactured by face turning a tubular part under radial stress and waviness is obtained after elastic relaxation. Modeling is performed on a three-dimensional finite element model of the assembly, composed of the plug, the sample seat, and its holder. The upper sample seat surface, in which topography is recorded by confocal microscopy, is reconstructed using a modal decomposition on the basis of vibrational eigenmodes. Its lower surface, in contact with the holder, is considered as perfectly flat or with its own defects. The contact aperture field between the seat and the plug is computed for a given normal load and is used to solve the incompressible Reynolds equation with a boundary element method, yielding the transmissivity. Predicted transmissivities reveal to be in good agreement with experimental data at low clamping loads and are overestimated for larger ones. Defects on the lower surface of the seat are shown to have a significant impact on the seat-to plug contact transmissivity.
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October 2018
Research-Article
Prediction and Measurement of Sealing Properties of Joints Between Wavy Metal Surfaces
Julien Bourniquel,
Julien Bourniquel
CNRS, I2M, UMR5295,
Esplanade des Arts et Métiers,
Talence Cedex 33405, France;
Esplanade des Arts et Métiers,
Talence Cedex 33405, France;
EDF R&D,
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
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Didier Lasseux,
Didier Lasseux
CNRS, I2M, UMR5295,
Esplanade des Arts et Métiers,
Talence Cedex 33405, France
e-mail: didier.lasseux@u-bordeaux.fr
Esplanade des Arts et Métiers,
Talence Cedex 33405, France
e-mail: didier.lasseux@u-bordeaux.fr
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Jean-Francois Rit
Jean-Francois Rit
EDF R&D,
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
Search for other works by this author on:
Julien Bourniquel
CNRS, I2M, UMR5295,
Esplanade des Arts et Métiers,
Talence Cedex 33405, France;
Esplanade des Arts et Métiers,
Talence Cedex 33405, France;
EDF R&D,
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
Didier Lasseux
CNRS, I2M, UMR5295,
Esplanade des Arts et Métiers,
Talence Cedex 33405, France
e-mail: didier.lasseux@u-bordeaux.fr
Esplanade des Arts et Métiers,
Talence Cedex 33405, France
e-mail: didier.lasseux@u-bordeaux.fr
Jean-Francois Rit
EDF R&D,
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
Avenue des Renardières – Ecuelles,
Moret-sur-Loing Cedex 77818, France
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received December 12, 2017; final manuscript received July 7, 2018; published online August 2, 2018. Assoc. Editor: Steve J. Hensel.
J. Pressure Vessel Technol. Oct 2018, 140(5): 051203 (10 pages)
Published Online: August 2, 2018
Article history
Received:
December 12, 2017
Revised:
July 7, 2018
Citation
Bourniquel, J., Lasseux, D., and Rit, J. (August 2, 2018). "Prediction and Measurement of Sealing Properties of Joints Between Wavy Metal Surfaces." ASME. J. Pressure Vessel Technol. October 2018; 140(5): 051203. https://doi.org/10.1115/1.4040894
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