Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on the F.E. Model Updating and Optimization for Vehicle Subframe

차량 서브프레임의 유한요소 모델의 개선 및 최적화에 대한 연구

  • 허덕재 (고등기술연구원, 아주대학교 대학원) ;
  • 이근수 (대우자동차 기술연구소) ;
  • 홍석윤 (서울대학교 조선해양공학과) ;
  • 박태원 (아주대학교 기계 및 생산공학부)
  • Published : 2002.03.01
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Abstract

This paper describes an integrated approach process to carry out pre-test, model correlation and updating analysis on the sub-frame of a vehicle. In this study, it was found that the modal test could be more efficient when the exciting point was selected on the area with high driving point residue. Such area could be located with the aid of finite element modal analysis. The model correlation was appraised in conjunction with the modal parameters between modal test and finite elements analysis. Also, the finite element model updating was obtained the good resultant using the iteration method based on sensitivity analysis results that carried out the variation of natural frequencies and MAC for the material properties. Finally, optimization of vehicle subframe was carried out the analysis of core location and physical properties by tow steps.

Keywords

References

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