Constitutive Modeling Of A Glass Fiber-Reinforced Ptfe Gasketed-Joint Under A Re-Torque

Keywords

Bolted-joint Relaxation; Gasket Creep; Viscoelastic Modeling

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 boltgasket test fixture in order to validate the ability of the model to simulate the re-torque response under various loading conditions and flange detail.

Publication Date

1-1-2016

Publication Title

Characterization of Minerals, Metals, and Materials 2015

Number of Pages

227-234

Document Type

Article; Book Chapter

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/978-3-319-48191-3_28

Socpus ID

85028883351 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85028883351

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