Abstract
When the seal is suffered from defected damage, it initiates a little leakage and finally becomes the critical abnormal condition. Sealing ring has very small than neighbored other components, it has to be considered as the most important thing due to intensity of its function. Sealing rings are designed with many kinds of cross-sections: O-ring, Square-ring, D-ring, X-ring etc. according to its different usage. The cross-section of D-ring is included with cross-sections of O-ring and Square-ring partially, in a other word, D-ring has both advantages of O-ring and Square-ring. In order to reduce the stress concentration, D-ring should be prepared with curvature radius in both sides of the lower square corner. In this work, the analyses on the interior stresses, and the behavior of D-ring with various curvature radius under uniform squeeze rate 20 % and various internal pressures of 0~20 MPa were studied by using the stress frozen photoelastic experiment and the photoelastic experimental hybrid method. From this research, it was founded that the geometrically optimal condition for curvature radius of D-ring under uniform squeeze rate and various internal pressures is r/D = 0.3.
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Hyun-Seok Lim received his B.S. degree in Architectural Engineering from Kyeonggi University in 2010 and M.S. degree in Mechanical Engineering from Yeungnam University in Korea in 2012. Mr. Lim is currently is a Ph.D. candidate under Prof. Hawong in the School of Mechanical Engineering, Yeungnam University, Korea. His research interests include experimental stress analysis and bioengineering.
Dong-Chul Shin received the B.S., M.S. and Ph.D. degrees in Mechanical Engineering from Yeungnam University in 1995, 1997, and 2001, respectively. He studied at the University of Tokyo, Japan as a Post-Doctoral Fellow from 2005 to 2007. He is currently a Professor in the Department of Mechanical Engineering at Koje College, Korea. His research interests include static and dynamic fracture mechanics, stress analysis, and fracture criteria of piezoelectric ceramics.
Jai-Sug Hawong received the B.S. degree in Mechanical Engineering from Yeungnam University in Korea in 1974, the M.S. degree from Yeungnam University in 1976, and the Ph.D. degree from Kanto Gakuin University in Japan in 1990. He was a Professor in the School of Mechanical Engineering at Yeungnam University in Gyeongsan City, Korea. He served as President of the Korea Society of Mechanical Engineering. Professor Hawong’s research interests include static and dynamic fracture mechanics, stress analysis, experimental mechanics for stress analysis, and composite materials.
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Lim, HS., Shin, DC. & Hawong, JS. Analysis for interior stress in various curvature radiuses on D-ring seal using hybrid photoelastic experimental method. J Mech Sci Technol 31, 3679–3683 (2017). https://doi.org/10.1007/s12206-017-0709-9
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DOI: https://doi.org/10.1007/s12206-017-0709-9