Straight-sided Spline Optimization

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch


Spline connection of shaft and hub is commonly applied when large torque capacity is needed together with the possibility of disassembly. The designs of these splines are generally controlled by different standards. In view of the common use of splines, it seems that few papers deal with splines and the subject of improving the design. The present paper concentrates on the optimization of splines and the predictions of stress concentrations, which are determined by finite element analysis (FEA). Using design modifications, that do not change the spline load carrying capacity, it is shown that large reductions in the maximum stress are possible. Design modifications are given as simple analytical functions (modified super elliptical shape) with only two active design parameters and the designs are practical realizable.
Original languageEnglish
Title of host publication9th World Congress on Structural and Multidisciplinary Optimization
Publication date2011
Publication statusPublished - 2011
Event9th World Congress on Structural and Multidisciplinary Optimization - Shizuoka, Japan
Duration: 13 Jun 201117 Jun 2011
Conference number: 9


Conference9th World Congress on Structural and Multidisciplinary Optimization


  • Straight-sided spline
  • Stress concentration
  • Laplace equation
  • Torsion
  • Optimization


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