DOI QR코드

DOI QR Code

프레임 구조물에 대한 선형 내구 보강 기법의 적용

Application of the Durability Reinforcement Technique on the Frame Structure

  • 권성훈 (한양대학교 대학원 기계공학과) ;
  • 유홍희 (한양대학교 기계공학부)
  • 발행 : 2009.11.01

초록

In this paper, the technique to reinforce the durability performance of structure using the sensitivity information for the frame structure is applied. The fatigue life calculation for the frame structure is performed from the quasi-static and transient analysis and the characteristics of two methods are compared for the fatigue analysis. Then the reinforcement technique is applied. First, some design variables related to the locations of fatigue failure is selected. Then sensitivities of fatigue life at fracture points with respect to the variation of design variables are calculated and the vector composed of gaps between the target life and initial life cycles is calculated. If the number of fatigue fracture points is same as the number of design variables, the variations of the design variables are calculated from the linear algebraic equation. If not, the variations of the design variables are calculated from the optimization formulation with the constraints.

키워드

참고문헌

  1. Yoo, W. S. and Haug, E. J., 1986, 'Dynamics of Flexible Mechanical Systems Using Vibration and Static Correction Modes,' Journal of Mechanisms, Transmissions and Automation in Design, Vol. 8, pp.315-322
  2. Yim, H. J., 1990, 'Computational Methods for Stress Analysis of Mechanical Components in Dynamic Systems,' Ph.D Dissertation, The University of Iowa
  3. Craig, R. R. and Bampton, M. C., 1968, 'Coupling of Substructures for Dynamic Analysis,' AIAA Journal, Vol.6, No.7, pp.1313-1319 https://doi.org/10.2514/3.4741
  4. Kim, C. W., 2003, 'Frequency Response Analysis of Structure with Damping and Acoustic Fluid using Automated Multilevel Substructuring,' Ph.D Dissertation, The University of Texas at Austin
  5. Chang, K. H., Yu, X. and Choi, K. K., 1997, 'Shape Design Sensitivity Analysis and Optimization for Structural Durability,' International Journal for Numerical Methods in Engineering, Vol.40, pp.1719-1743 https://doi.org/10.1002/(SICI)1097-0207(19970515)40:9<1719::AID-NME139>3.0.CO;2-O
  6. Venter, G., Haftka, R. T. and Chirehdast, M., 1997, 'Response Surface Approximations for Fatigue Life Prediction,' 38th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and AIAA/ASM/AHS Adaptive Structures Forum., AIAA, pp.1383-1396
  7. Edda Eich-Soellner and Claus Fuhrer, 1998, 'Numerical Methods in Multibody Dynamics,' Teubner
  8. RecurDyn Program Manual, Ver.7.0, Function Bay Inc., 2008
  9. ANSYS User's Guide, Ver.11.0, ANSYS Inc., 2007