Abstract
Sealing elements are essential parts of many machines, and are used to prevent the loss of a fluid or gas. When such fluids are not properly sealed, catastrophic failures may result. Many different types of rings have been developed to suit various industrial needs. Considerable research has been done on the O-ring. We analyze the internal stresses developed in an X-ring under a uniform squeeze rate of 20%, which is suitable for static applications, using a photoelastic experimental hybrid method. The internal pressures applied were 0.98, 1.96, 2.94, 3.92, 4.90, and 5.88 MPa. We show that sealing rings with X geometry have considerably higher internal stresses than O-ring seals. In addition, we demonstrate that after extrusion, for an internal pressure of 5.88 MPa, the two lobes on the upper contact surface merge, thereby increasing the contact length of the upper side significantly. Extrusion in the X-ring occurred when the internal pressure was 4.90 MPa.
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Recommended by Editor Jai Hak Park
Jai-Sug Hawong received the B.S. degree in Mechanical Engineering from Yeungnam University in 1974. He received the M.S. degree and Ph.D. degree from Yeungnam University in Korea in 1976 and from Kanto Gakuin University in Japan in 1990, respectively. Prof. Hawong 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.
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. Dr. Shin studied at the University of Tokyo, Japan, for three years from April, 2005 to January, 2008 as a Post-Doctoral fellow (supported by Korea Research Foundation (KRF) and Japan Society for the Promotion of Science (JSPS)). Dr. Shin is currently a Professor at the Department of Mechanical Engineering at Koje College, Korea. His research interests include the static and dynamic fracture mechanics, stress analysis, and fracture criteria of piezoelectric ceramics, etc.
Hyun-Seok Lim received the B.S. degree in Architectural Engineering from Kyeonggi University in 2010 and the 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. Mr. Lim’s research interests are in experimental stress analysis and bioengineering
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Bernard, A.O., Hawong, JS., Shin, DC. et al. Internal stress distribution of X-ring using photoelastic experimental hybrid method. J Mech Sci Technol 28, 1697–1708 (2014). https://doi.org/10.1007/s12206-014-0314-0
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DOI: https://doi.org/10.1007/s12206-014-0314-0