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Analysis of Design Parameter of Structural Modification using Change of Dynamic Characteristics

동특성 변화로부터 구조물의 변경된 설계파라미터 해석

  • 오재응 (한양대학교 기계공학부) ;
  • 이정우 (한전기공(주)) ;
  • 이정윤 (경기대학교 기계시스템디자인공학부)
  • Published : 2006.04.01

Abstract

This paper predicts the modified mass and stiffness of structure using the sensitivity coefficients with the iterative method. The sensitivity coefficients are obtained by the change of the eigenvectors according to structural modification. The method is applied to an examples of a 3 degree of freedom system by modifying mass and stiffness. The predicted mass and stiffness are in good agreement with these from the structural reanalysis using the modified mass and stiffness.

Keywords

References

  1. Fox, R. L. and Kapoor. M. P., 1968. 'Rates of Change of Eigenvalues and Eigenvectors.' AIAA Journal, Vol. 6, No. 12, pp. 2426-2429 https://doi.org/10.2514/3.5008
  2. Kim, H. and Park, Y., 1999, 'Updating Algorithms of Finite Element Model Using Singular Value Decomposition and Eigenanalysis,' Transactions of the KSNVE, Vol. 9, No. 1, pp. 163-173
  3. Ahmadian, H., Mottershead, J. E. and Friswell M. I., 1998, 'Regularization Methods for Finite Element Model Updating,' Mechanical Systems and Signal Processing, Vol. 12, No. 1, pp. 47-64 https://doi.org/10.1006/mssp.1996.0133
  4. Lee, J. M., Lee, J. W. and Sung, M. H., Fritzen, C. P., 1992, 'A study on Dynamic Modelling of Joint in Plate Structure,' Transactions of the KSNVE, Vol. 2, No. 1, pp. 61-66
  5. Park, Y. S. and Park, H. S., 1984, 'A Study on Improving the Realiablity of a Finite Elements Model and Stiffness Damage Detection by Dynamic Characteristics Measurements,' Transactions of KSME A, Vol. 10, No. 1, pp. 157-163
  6. Friswell, M. I., Penny, J. E. T. and Wilson, D. A. L., 1994, 'Using Vibration Data and Statistical Measures to Locate Damage in Structures,' Journal of Analytical and Experimental Modal Analysis, Vol. 9, No. 4, pp. 239-254
  7. Zhang, Q., Wang, W., Allemang, R. J., and Brown, D. L., 1989, 'Prediction of Mass Modification For Desired Natural Frequencies,' Journal of Analytical and Experimental Modal Analysis, Vol. 4, No. 2, pp. 39-44
  8. Lee, J. Y., 2002, 'A Structural Eigenderivative Analysis by Modification of Design Parameter,' Transactions of KSME A, Vol. 26, No. 4, pp. 739-744 https://doi.org/10.3795/KSME-A.2002.26.4.739