Evaluating the stresses of a stepped unrounded D-ring under uniform squeeze rate and internal pressure by photoelastic experimental hybrid method

Title
Evaluating the stresses of a stepped unrounded D-ring under uniform squeeze rate and internal pressure by photoelastic experimental hybrid method
Author(s)
황재석아룬다임현석남정환[남정환]브르노[브르노]
Keywords
O-RING; CONTACT STRESS; SEAL
Issue Date
201208
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.26, no.8, pp.2603 - 2616
Abstract
The stresses that develop in a stepped unrounded D-ring loaded with internal pressures at a 20% squeeze rate are analyzed using the photoelastic experimental hybrid method. The analysis demonstrated that the contact stresses on both the upper and front sides of the D-ring increased as the applied internal pressure increased, with the magnitudes of sigma(X)/p(i) and sigma(Y)/p(i) being considerably higher than those of tau(XY)/p(i). Moreover, as applied internal pressure increased, the semi-circular portion of the D-ring moved to fill the space ahead of the step before contacting the restraining wall of the front side. The order of magnitude of stresses in region 1 of the front side of the D-ring was lower than those in region 2. At an internal pressure of 3.92 MPa, the contact stresses on the upper side decreased before increasing again at points away from the region of extrusion. The study further showed that a sharp corner in the geometry of the D-ring does not contribute to the generation of detrimental stresses that may lead to failure of the D-ring before extrusion.
URI
http://hdl.handle.net/YU.REPOSITORY/27546http://dx.doi.org/10.1007/s12206-012-0635-9
ISSN
1738-494X
Appears in Collections:
공과대학 > 기계공학부 > Articles
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