DOI QR코드

DOI QR Code

Comparison Study on Structural Dynamic Modelings Employing Single Reference Frame

단일 기준 틀을 사용한 구조 동역학 모델링 비교 연구

  • 김정민 (한양대학교 대학원 기계설계학과) ;
  • 유홍희 (한양대학교 공과대학 기계공학부)
  • Published : 2004.12.01

Abstract

In this paper, modeling methods for the structural dynamic analysis employing single reference frame are presented and their modal and transient analysis results are compared. The geometric stiffening effects often occur when structures undergo large overall motion. These effects were considered in several structural previous modeling methods but the role of reference frame has never been scrutinized. In this study, modeling methods employing single reference frame are presented, and their numerical results are compared. The results show that discrepancy between the two modeling methods increases as the eccentricity of the structural system and the magnitude of the large overall motion increase.

Keywords

Reference Frame;Finite Element Method;Geometric Stiffening Effect;Fore-Shortening Effect

References

  1. Ho, J., 1977, 'Direct Path Method for Flexible Multibody Spacecraft Dynamics,' Journal of Spacecraft and Rockets, Vol. 14, pp. 102-110 https://doi.org/10.2514/3.57167
  2. Christensen, E. and Lee, S., 1986, 'Nonlinear Finite Element Modeling of the Dynamics of Unrestrained Flexible Structures,' Computers and Structures, 23, pp. 819-829 https://doi.org/10.1016/0045-7949(86)90251-8
  3. Kane, T., Ryan, R. and Banerjee, A., 1987, 'Dynamics of Cantilever Beam Attached to a Moving Base,' Journal of Guidance, Control, and Dynamics, 10, pp. 139-151 https://doi.org/10.2514/3.20195
  4. Yoo, R., Ryan, R., Scott, R., 1995, 'Dynamics of Flexible Beams Undergoing Overall Motions,' Journal of Sound and Vibration, 181(2), pp. 261-278 https://doi.org/10.1006/jsvi.1995.0139
  5. Ahmed A., Shabana, 1986, 'Dynamics of InertiaVariant Flexible Systems Using Experimentally Identified Parameters,' Journal of Mechanism, Transmissions, and Automation in Design, Vol. 108, pp. 358-366 https://doi.org/10.1115/1.3258740
  6. Shabana, A.A. and Wehage, R.A., 1982, 'Variable Degree-of-Freedom Component Mode Analysis of Inertia Variant Flexible Mechanical Systems,' Journal of Mechanical Design, No. 82-DET-93, pp. 1-8
  7. Eung-Min Park, Rong-Ree Yoo, 1997, 'Dynamic Analysis of Multi-beam Structures Considering Stiffening Effects Induced By Large Overall Rigid Body Motion,' Korean Society for Aeronautical and Space Science, Vol. 26, No.2, pp. 40-46
  8. Ahmed A., Shabana, 1988, Dynamics of Multibody Systems, John Wiley & Sons
  9. Meirovitch, L., 1967, Analytical Method in Vibration, Macmillan Company