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http://dx.doi.org/10.7842/kigas.2013.17.1.73

Finite Element Analysis on the Sealing Behavior and Endurance Safety of O-rings with a V-groove  

Kim, Chung Kyun (Research Center for Tribology, Mechatronics and Energy Technology, Hongik University)
Publication Information
Journal of the Korean Institute of Gas / v.17, no.1, 2013 , pp. 73-80 More about this Journal
Abstract
This study presents sealing behavior and endurance safety of V-grooved o-rings as functions of a strain, compression stress, and contact normal stress using a FEM technique. The FEM results on the sealing behavior and endurance safety show that the maximum strain, maximum compression stress, and maximum contact normal stress of V-grooved o-rings are approximately 1.2 times higher than those of conventional solid o-rings. This is why that an o-ring has a V-groove in the center between two overlapped circles, which is very effective in sealing for ball valves, pressure vessels, and gas equipment. And the extrusion failure in V-grooved o-rings does not take place under an increased gas pressure due to a V-groove. This may extend sealing life compared with that of a conventional solid o-ring.
Keywords
V-grooved o-ring; sealing behavior; endurance safety; stress and strain;
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