A numerical model was developed to study the sealing performance of rectangular elastomeric seals for reciprocating piston rods used in linear hydraulic actuators. The model takes into account a large number of parameters and has been applied in the study of seals for aircraft actuation assemblies in a broad range of temperatures (−55°C to +135°C) and sealed pressures (1–50 MPa or more). The model is used to calculate the contact pressures and film thickness maps as well as the leakage rates and friction for the dynamic or static contact between a seal and a reciprocating piston rod, aiming at the minimization of both the leakage and the wear of the seals.

1.
White, C. M., and Denny, D. F., 1947, “The Sealing Mechanism of Flexible Packings,” Ministry of Supply, Scientific and Technical Memorandum No. 3/47, England.
2.
Field
,
G. J.
, and
Nau
,
B. S.
,
1975
, “
A Theoretical Study of the Elastohydrodynamic Lubrication of Reciprocating Rubber Seals
,”
ASLE Trans.
,
18
, pp.
48
54
.
3.
Ruskell
,
L. E. C.
,
1980
, “
A Rapidly Converging Theoretical Solution of the Elastohydrodynamic Problem for Rectangular Rubber Seals
,”
Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci.
,
22
, pp.
9
16
.
4.
Nau
,
B. S.
,
1987
, “
The State of the Art of Rubber-Seal Technology
,”
Rubber Chem. Technol.
,
60
, pp.
381
416
.
5.
Nau
,
B. S.
,
1999
, “
An Historical Review of Studies of Polymeric Seals in Reciprocating Hydraulic Systems
,”
Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol.
,
213
, pp.
215
226
.
6.
Lawrie, J. M., and O’Donoghue, J. P., 1964, “The Mechanism of Lubrication in a Reciprocating Seal,” Proc. of the Second International Conference on Fluid Sealing, Cranfield, England, The British Hydromechanics Research Association (BHRA), Paper B6, pp. 69–80.
7.
Dowson, D., and Swales, P. D., 1967, “An Elastohydrodynamic Approach to the Problem of the Reciprocating Seal,” Proc. of the Third International Conference on Fluid Sealing, Cambridge, England, The British Hydromechanics Research Association (BHRA), Paper F3, pp. 33–44.
8.
Dowson, D., and Swales, P. D., 1969, “The Development of Elastohydrodynamic Conditions in a Reciprocating Seal,” Proc. of the Fourth International Conference on Fluid Sealing, Session 1, The British Hydromechanics Research Association (BHRA), pp. 2–10.
9.
Field, G. J., and Nau, B. S., 1972, “An Experimental Study of Reciprocating Rubber Seals,” Proc. of the Institution of Mechanical Engineers, Symposium on Elastohydrodynamic Lubrication, Paper C5, pp. 29–36.
10.
Mu¨ller, H. K., 1964, “Leakage and Friction of Flexible Packings at Reciprocating Motion With Special Consideration of Hydrodynamic Film Formation,” Proc. of the Second International Conference on Fluid Sealing, Cranfield, England, The British Hydromechanics Research Association (BHRA), Paper B2, pp. 13–28.
11.
Nikas, G. K., 2001, “Determination of Polymeric Sealing Principles for End User High Reliability,” Technical Report DOW-08/01 (Dowty project), Imperial College of Science, Technology and Medicine, Mech. Eng. Dept., Tribology Section, London, UK.
12.
Hamrock, B. J., 1994, Fundamentals of Fluid Film Lubrication, McGraw-Hill.
13.
Johnson, K. L., 1985, Contact Mechanics, (reprint 1994), Cambridge University Press, London and New York.
You do not currently have access to this content.