A study on the development of a loading device using a photoelastic stress freezing method for the analysis of o-ring stress

Title
A study on the development of a loading device using a photoelastic stress freezing method for the analysis of o-ring stress
Author(s)
황재석남정환김교형류의[류의]권오성박성한[박성한]
Keywords
SEAL; GROOVE
Issue Date
201003
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.24, no.3, pp.693 - 701
Abstract
Typically, O-rings are used to prevent penetration of dust and alien substances from entering a cylinder during motion. Moreover, Orings are used to create an air tight seal around a stationary shaft. The stresses developed in O-rings depend on the squeeze rate, gap between the external diameter of the groove and internal diameter of the cylinder as well as internal pressure. In application, the stress distributions in O-rings can be very complicated and are almost always studied through experiment. Photoelastic experiment has been applied to the study of 3-dimensional stress distributions in O-rings. The loading device used in photoelastic experiment is important. Its function is to apply a uniform squeeze rate and internal pressure on the O-ring and to allow uniform squeeze rate to be controlled. In this research, a loading device was developed to perform these functions. The validity of this loading device was confirmed through the stress distribution, the configuration change and the contact length of the O-ring. When the squeeze rate was constant, the upper and lower contact lengths of the deformed O-ring were almost equal. When internal pressure was applied to the O-ring, while under a uniform squeeze rate the upper contact length increases slightly with increase in internal pressure, while the lower contact length of the O-ring is constant with an increase in internal pressure.
URI
http://hdl.handle.net/YU.REPOSITORY/22765http://dx.doi.org/10.1007/s12206-010-0201-2
ISSN
1738-494X
Appears in Collections:
공과대학 > 기계공학부 > Articles
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