Abstract
Sealing is always a very important mechanical element when damage, breakage, leakage or even more serious disasters occur. Sealing has a range of cross-sections, such as O-rings, X-rings, Square-rings and D-rings, which is used in many ways. The cross section of a Dring without curvature radius is simply combined with the half cross sections of an O-ring and Square-ring. The general D-ring has the same corner angle as the Square-ring's corner. Therefore, a stress concentration can easily cause damage. To reduce this stress concentration, a D-ring without curvature radius should be changed into a D-ring with a curvature radius on the square corner. Stress analysis of a D-ring with a curvature radius is needed. In this sturdy, the stress of a D-ring with a curvature radius under a uniform squeeze rate 20% and various internal pressures was analyzed by using a photoelastic experiment hybrid method. The results showed that the D-ring with a curvature radius has the advantages of both an O-ring and Square-ring, and the magnitudes of the contact stress in the D-ring with a curvature radius are almost constant along the contact line. This means that the packing ability of a D-ring with a curvature radius is excellent.
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Jai-Sug Hawong received his B.S. degree in Mechanical Engineering from Yeungnam University in 1974. He received his M.S. degree from Yeungnam University in Korea in 1976, and Ph.D. degree from Kanto Gakuin University in Japan in 1990. He is currently a Professor at the School of Mechanical Engineering at Yeungnam University in Gyeongsan City, Korea. He served as President of the Korea Society of Mechanical Engineering. Prof. Hawong’s research interests include static and dynamic fracture mechanics, stress analysis, experimental mechanics for stress analysis, and composite materials.
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 his 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.
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Lim, HS., Hawong, JS., Shin, DC. et al. A study on the behaviors of the D-ring with a curvature radius using the photoelastic experimental hybrid method. J Mech Sci Technol 29, 3395–3404 (2015). https://doi.org/10.1007/s12206-015-0737-2
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DOI: https://doi.org/10.1007/s12206-015-0737-2