An efficient shape optimization method based on FEM and B-spline curves and shaping a torque converter clutch disk

S. Hyun, C. Kim, J. H. Son, Sehyun Shin, Y. S. Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)


An efficient shape optimization scheme has been developed for designing axis symmetric structures. The sequential linear programming and Simplex method are coupled with finite element analysis. Selected sets of master nodes on design boundaries are employed as design variables and assigned to move towards their normal directions. By interpolating the repositioned master nodes, B-spline curves are constructed so that the remaining nodes on the design boundaries efficiently settle on the B-spline curves. A mesh smoothing scheme is also applied to interior nodes to maintain the finite elements in good quality. Applying these techniques a numerical implementation is presented to obtain the optimum design of an automobile torque converter clutch disk subjected to a hydraulic pressure and centrifugal force loads. The results give the optimum shape of the disk showing weight saving up to 13% after the shape optimization.

Original languageEnglish
Pages (from-to)1803-1815
Number of pages13
JournalFinite Elements in Analysis and Design
Issue number13-14
Publication statusPublished - 2004 Aug 1
Externally publishedYes



  • Adaptive remeshing
  • B-spline curve
  • Finite element method
  • Shape optimization
  • Torque converter lock-up clutch disk

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Mechanics

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