Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Shape Optimization of the Lower Control Arm using the Characteristic Function and the Fatigue Analysis

특성함수와 피로해석을 이용한 로워컨트롤암의 형상최적설계

  • Park Youngchul (Department of Mechanical Engineering Dong-A University) ;
  • Lee Donghwa (Department of Mechanical of Engineering Graduate School, Dong-A University)
  • 박영철 (동아대학교 기계공학과) ;
  • 이동화 (동아대학교 기계공학과 대학원)
  • Published : 2005.01.01
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Abstract

The current automotive is seeking the improvement of performance, the prevention of environmental pollution and the saving of energy resources according to miniaturization and lightweight of the components. And the variance analysis on the basis of structure analysis and DOE is applied to the lower control am. We have proposed a statistical design model to evaluate the effect of structural modification by performing the practical multi-objective optimization considering weight, stress and fatigue lift. The lower control arm is performed the fatigue analysis using the load history of real road test. The design model is determined using the optimization of acquired load history with the fatigue characteristic. The characteristic function is made use of the optimization according to fatigue characteristics to consider constrained function in the optimization of DOE. The structure optimization of a lower control arm according to fatigue characteristics is performed. And the optimized design variable is D=47 m, T=36mm, W=12 mm. In the real engineering problem of considering many objective functions, the multi-objective optimization process using the mathematical programming and the characteristic function is derived an useful design solution.

Keywords

References

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