Internal stress distribution of X-ring using photoelastic experimental hybrid method

다국어 초록 (Multilingual 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 notproperly sealed, catastrophic failures may result. Many different types of rings have been developed to suit various industrial needs. Considerableresearch has been done on the O-ring. We analyze the internal stresses developed in an X-ring under a uniform squeeze rate of20%, 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-ringseals. In addition, we demonstrate that after extrusion, for an internal pressure of 5.88 MPa, the two lobes on the upper contact surfacemerge, thereby increasing the contact length of the upper side significantly. Extrusion in the X-ring occurred when the internal pressurewas 4.90 MPa.

참고문헌 (Reference)

1 C. M. White, "The sealing mechanism of flexible packings, Scientific and Technical Memorandum 3/47" BHRA Fluid Engineering 1972

2 A. Strozzi, "Static stresses in an unpressurized, rounded, rectangular, elastomeric seal" 29 (29): 558-564, 1986

3 Z. Marioli-rigs, "Standard analysis methodology for the stress analysis of repaired aircraft structures with the method of composite patch repair" 11 : 191-203, 2004

4 N. I. Muskhelishvili, "Some Basic Problems of Mathematical Theory of Elasticity" Noordhoff Ltd 1963

5 M. S. Bazaraa, "Nonlinear programming theory and algorithms" John Wiley & Sons Inc 1979

6 D. A. Hills, "Mechanics of elastic contacts" Butterworth-Heinemann 1993

7 Roy R. Craig JR, "Mechanics of Materials" John Wiley &Sons Inc 2001

8 M. Glanluca, "Mechanical analysis of elastomeric seals by numerical methods" 23 : 596-600, 1984

9 H. Gronau, "Investigations on gland packings and sealing rings for high hydraulic pressures" University of Berlin 1935

10 G. Wendt, "Investigation of Rubber ‘O’ ring and ‘X’ rings Stress Distributions, Service life and Groove Design" A briged English Translation BHRA 1971

11 S. T. Lin, "Hybrid stress analysis" 32 : 257-298, 1999

12 남정환, "Contact stress of O-ring under uniform squeeze rate by photoelastic experimental hybrid method" 대한기계학회 22 (22): 2337-2349, 2008

13 H. Johannesson, "Calculation of the pressure distribution in an O-ring seal contact" 379-387, 1978

14 E. Dragoni, "Analysis of an unpressurized, laterally restrained, elastomeric O-ring seal" 110 : 193-200, 1998

15 남정환, "A study on the development of a loading device using a photoelastic stress freezing method for the analysis of o-ring stress" 대한기계학회 24 (24): 693-701, 2010

16 Jeong-Hwan Nam, "A study on the behaviors and stresses of O-ring under uniform squeeze rates and internal pressure by transparent type photoelastic experiment" 대한기계학회 25 (25): 2427-2438, 2011

17 황재석, "A study on the analysis of O-ring under uniform squeeze rate and internal pressure by photoelastic experimental hybrid method" 대한기계학회 23 (23): 2330-2340, 2009

18 R. C. Sampson, "A stress-optic law for photoelastic analysis of orthotropic composites" 10 : 210-215, 1970

19 J. S. Hawong, "A hybrid method to determine individual stresses in orthotropic composites using only measured isochromatic data" 29 (29): 2366-2387, 1995