Abstract
Joints gasketed with viscoelastic seals often receive an application of a secondary torque, i.e., retorque, in order to ensure joint tightness and proper sealing. The motivation of this study is to characterize and analytically model the load and deflection re-torque response of a single 25% glass-fiber reinforced polytetrafluorethylene (PTFE) gasket-bolted joint with serrated flange detail. The Burger-type viscoelastic modeling constants of the material are obtained through isolating the gasket from the bolt by performing a gasket creep test via a MTS electromechanical test frame. The re-load creep response is also investigated by re-loading the gasket after a period of initial creep to observe the response. The modeling constants obtained from the creep tests are used with a Burger-type viscoelastic model to predict the re-torque response of a single bolt-gasket test fixture in order to validate the ability of the model to simulate the re-torque response under various loading conditions and flange detail.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Waterland, A. F., and Frew, J. E. B. (2006) “Determination of Optimum Ambient Temperature ReTorque Dwell Period for PTFE Based Gaskets” ASME Pressure Vessel and Piping Conference, Vancouver, British Columbia, CA, July 23rd–27th.
Ali P. Gordon, Drilling B., et al. (2011) “Optimization of Re-Torque and Relaxation Parameters of the GUCP” ASME 2011 Pressure Vessels and Piping Conference, Baltimore, Maryland, USA, July 17–21, Volume 2: Computer Technology and Bolted Joints, Paper No. PVP2011–57682, pp. 57–65; 9 pages
Alkelani, A. A. (2008) “A proposed Model for Creep Relaxation of Soft Gaskets in Bolted Joints at Room Temperature” Journal of Pressure Vessel Technology, 130: 011211–1-011211–6.
Ali P. Gordon, Williams J., et al. (2011) “Analytical Modeling of the Mechanics of Re-Torque” ASME 2011 Pressure Vessels and Piping Conference, Baltimore, Maryland, USA, July 17–21, Volume 6: Materials and Fabrication, Parts A and B, Paper No. PVP2011–57718, pp. 1135–1143; 9 pages
ASTM (2006) “Standard Test Methods for Creep Relaxation of a Gasket Material (F-38)” American Society for Testing and Materials, West Conshohocken, PA.
ASTM (1999) “Standard Test Method for Compressibility and Recovery of Gasket Materials (F-36)” American Society for Testing and Materials, West Conshohocken, PA.
Kobayshi, T., and Hamano K. (2004) “The Reduction of Bolt Load in Bolted Flange Joints due to Gasket Creep-Relaxation Characteristics” ASME Conference on Pressure Vessels and Piping, San Diego, CA, July 25th–29th
Bouzid, A., Chaaban, A., and Bazergui, A. (1995), “The Effect of Gasket Creep Relaxation on the Leakage Tightness of Bolted Flanged Joints”, Journal of Pressure Vessel Technology, 117(1): 71–78.
Brinson, H., Brinson C., (2007) “Polymer Engineering Science and Viscoelasticity: An Introduction” (Springer Science & Business Media), 84
Bickford, J. H., (1995) An Introduction to the Design and Behavior of Bolted Joints, Third Edition, Revised and Expanded, CRC Press, Boca Raton, FL.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Williams, J., Gordon, A.P. (2015). Constitutive Modeling of a Glass Fiber-Reinforced PTFE Gasketed-Joint Under a Re-torque. In: Carpenter, J.S., et al. Characterization of Minerals, Metals, and Materials 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48191-3_28
Download citation
DOI: https://doi.org/10.1007/978-3-319-48191-3_28
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48601-7
Online ISBN: 978-3-319-48191-3
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)