Machines. Technologies. Materials.
Vol. 20 (2026), Issue 1, pg(s) 18-21

TECHNOLOGIES

Finite Element Modeling of a Flat Reinforced Expanded Polytetrafluoroethylene Gasket

  • 1 University of Ruse „Angel Kanchev“, Bulgaria

Abstract

The porosity of flat ePTFE gaskets imposes requirements on the compression force during installation. Improving the tightness when using such gaskets is achieved by reinforcing them in a certain area. The combination of the complicated shape and the highly nonlinear properties of the material used necessitates the creation of an appropriate numerical model, through which to determine the compression force necessary to ensure the required tightness. In this work, a simulation using the finite element method has been created and used, which is based on the Marlow material model and a viscoelastic model of shear stress relaxation. Results have been obtained for the hydrostatic stress, the minimum principal strains and the fluid leakage path. The threshold values of the minimum principal strain at different magnitudes of the compression force have been determined.

Keywords

References

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