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DESIGN OPTIMIZATION OF AUTOMOTIVE LOCK-UP CLUTCHES WITH DAMPER SPRINGS USING SIMULATED ANNEALING, FEM, AND B-SPLINE CURVES  

Kim, C. (Department of Mechanical Engineering, Kyungpook National University)
Yoon, J.W. (Department of Mechanical Engineering, Kyungpook National University)
Publication Information
International Journal of Automotive Technology / v.8, no.5, 2007 , pp. 599-603 More about this Journal
Abstract
An efficient optimum design process has been developed and applied to systematically design a lock-up clutch system for a torque converter used in an automatic transmission. A simulated annealing algorithm was applied to determine the parameters of the compressive helical damper springs in the clutch. The determination of the number, location, a number of turns, and deflection of damper springs plays an important role in reducing vibration and noise in the lock-up system. Next, FE-based shape optimization was coded to find the shape of the clutch disk that would satisfy the strength, noise and vibration requirements. Using the optimum code, parametric studies were performed to see how spring diameters and frequencies of clutch systems changed as the damper spring traveling angles and the torques were varied. Based on the optimum results, five different designs for clutches with different springs were fabricated and vibration analyses and tests were conducted to validate the accuracy of the proposed method. Results from the two methods show a good correlation.
Keywords
Shape optimization; Lock-up clutch; Damper spring; FEM;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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