This paper discusses the effects of sheave groove shape, sheave diameter, and line tension on the frictional hold of polyester rope. A series of tests were conducted using five different sheaves, 5 and 9.2-cm-dia 2-in-1 polyester rope, under both wet and dry conditions. The frictional hold was determined from the difference in rope tension on opposite sides of a rotating sheave. The maximum tension on the high side was 245 kN. It was found that the coefficient of friction between polyester rope and smooth steel sheaves decreases with increase in rope tension for a given rope size. The 70-deg-V groove sheave shape demonstrated approximately 25 percent more frictional hold than the U-groove sheave shape. Holding capacity increases with sheave diameter. Large relative velocity exists between elastic lift line and sheave surface. Data will be used in a traction winch design.
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March 1985
Research Papers
Effect of Groove Shape on the Frictional Hold of a Sheave on Polyester Rope
C. S. Albro,
C. S. Albro
Battelle-Columbus, Columbus, Ohio 43201
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F. Liu
F. Liu
Naval Civil Engineering Laboratory, Port Hueneme, Calif. 93043
Search for other works by this author on:
C. S. Albro
Battelle-Columbus, Columbus, Ohio 43201
F. Liu
Naval Civil Engineering Laboratory, Port Hueneme, Calif. 93043
J. Energy Resour. Technol. Mar 1985, 107(1): 103-106 (4 pages)
Published Online: March 1, 1985
Article history
Received:
August 9, 1983
Revised:
October 14, 1983
Online:
October 22, 2009
Citation
Albro, C. S., and Liu, F. (March 1, 1985). "Effect of Groove Shape on the Frictional Hold of a Sheave on Polyester Rope." ASME. J. Energy Resour. Technol. March 1985; 107(1): 103–106. https://doi.org/10.1115/1.3231146
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