Browse > Article

Shape Optimization of the Lower Control Arm using the Characteristic Function and the Fatigue Analysis  

Park Youngchul (Department of Mechanical Engineering Dong-A University)
Lee Donghwa (Department of Mechanical of Engineering Graduate School, Dong-A University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.1, 2005 , pp. 119-125 More about this Journal
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
Characteristic function; Orthogonal away; Analysis of variance; Lower control arm; Design of experiments;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y. H. Chung, 'Aluminum Alloy Products for Automobile Use,' Journal of KSAE, Vol.18, No.5, pp.38-52, 1996
2 J. P. Dauer and R. J. Krueger, 'An Iterative Approach to Goal Programming,' Operational Research Quarterly, 28, pp.671-681, 1997   DOI
3 J. W. Yi, J. S. Park, K. J. Park and K. H. Lee, 'Development of an Optimization Algorithm Using Orthogonal Arrays in Discrete Design Space,' Transaction of the KSME, A, Vol.25, No.10, pp.1621-1626, 2001
4 K. H. Lee and G. J. Park, 'Robust Optimization in Discrete Design Space for Constrained Problems,' Transaction of the KSME, A, Vol.22, No.5, pp.728-737, 1998
5 A. Parkinson, C. Sorensen and N. Pourhassan, 'A General Approach for Robust Optimal Design,' Journal of Mechanical Design, Vol.115, pp.74-80, 1993   DOI   ScienceOn
6 Y. C. Park, N. S. Park, D. H. Lee and D. S. Park, 'A Study on Robust Design Application of the Lower Control Arm of the Vehicle Suspension,' 11th Korea ANSYS User's Conference 2001
7 K. H. Lee and G. J. Park, 'Robust Structural Optimization Considering the Tolerances of Design Variables,' Transaction of the KSME, A, Vol.2, No.1, pp.112-123, 1997
8 L. P. Chao, 'Multiobjective Optimization Design Methodology for Incorporating Manufacturing Uncertainties in Advanced Composite Structures,' Engineering Optimization, Vol.25, pp.309-323, 1996   DOI
9 S. I. Song, K. J. Bae, K. H. Lee and G. G Park, 'Lightweight Design for Automotive Door Using Optimizations and Design of Experiments,' Transactions of KSAE, Vol.10, No.1, pp.125-132, 2002
10 W. Chen, J. K. Allen, K. L. Tsui and F. Mistree, 'A Procedure for Robust Design Minimizing Variations Caused by Noise Factors and Control Factors,' Journal of Mechanical Design, Vol.118, pp.478-485, 1996   DOI
11 W. Chen, J. K. Allen, K. N. Mavris and F. Mistree, 'A Concept Exploration Method for Determining Robust Top-Level Specifications,' Engineering Optimization, Vol.26, pp.137-158, 1996   DOI   ScienceOn
12 D. H. Jung and B. C. Lee, 'Development of an Optimization Technique for Robust Design of Mechanical Structures,' Transaction of the KSME, A, Vol.24, No.1, pp.215-224, 2000