The results of a finite element analysis of a trilobe polygon shaft connection used as an alternative for a spline for torque transmission is presented. These results are compared to the results of a finite element analysis previously performed on an involute spline. It is shown that the tensile stress in the polygon shaft is significantly smaller than in the involute spline and is smaller than all the other stresses in both the shaft and the hub in the polygon connection. Furthermore, the magnitudes and distributions of the maximum principal compressive stress, the shear stress, and the Von Mises stress are nearly the same on the shaft and the hub. It appears that polygonal connections can be more advantageous than splined connections because of lower stresses and the lack of stress concentrations typical of splines. [S1050-0472(00)00601-2]

Issue Section:
Technical Papers
Keywords:
machine theory, torque, finite element analysis, tensile strength, stress analysis
Topics:
Splines, Stress, Torque, Tension, Finite element analysis
1.
Cedoz, R. W., and Chaplin, M. R., 1994, Design Guide for Involute Splines, Warrendale: Society of Automotive Engineers, Inc.
2.
Kahn-Jetter, Z., and Wright, S., 2000, “Finite Element Analysis of an Involute Spline,” ASME J. Mech. Des., in press.
3.
Stoffel, J., 1998, private communication, Stoffel Polygon Systems, Tuckahoe, New York.
4.
Green, R. E., (ed.), 1996, “Splines and Serrations,” Machinery’s Handbook, 25th Edition. New York, Industrial Press, Inc., pp. 2042–2077.
5.
Czyzewski
,
T.
, and
Odman
,
M. T.
,
1988
, “
Analysis of Contact Stress and Deformation in a Trilobe Polygonal Connection
,”
ASME J. Eng. Ind.
,
110
, pp.
212
–
217
.
6.
Dudley
,
D. W.
, Oct.
1957
, “
How to Design Involute Splines
,”
Product Eng.
,
28
, pp.
75
–
80
.
Copyright © 2000
 by ASME
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