Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Accuracy Evaluation of Alternative Concept Joint Models

결합부위 단순모델의 정확성 평가 방법의 개발

  • 이광주 (한국기술교육대학교 산업기계공학과)
  • Received : 1998.12.07
  • Published : 1999.02.27
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Abstract

The concept models are used for the analysis of joints because they are simple to use and accurate. The modeling parameters of concept models are estimated using the results of experiments performed on the joints. The concept joint models accurately describe the behavior of joints under the loads which are used in the experiments for the estimation of parameters. However, they may not be accurate under the loads which are not used in the experiments. The accuracy can be dependent on the loads which are used in the evaluation of accuracy. In this study, antioptimization is presented to find the worst possible loads, under which the accuracy of concept joint models can be evaluated. The procedure was applied to the accuracy evaluation of concept joint models in an isolated 3-D joint and 2-D joints of a vehicle structure.

결합부위의 해석을 위하여, 계산 효율과 정확성이 모두 뛰어난 단순모델의 사용이 필요한 경우가 많다. 이 단순모델은 결합부위의 특성을 잘 묘사하는 파라미터들로 구성된다. 이들 파라미터의 값은 실험을 통하여 얻어지게 된다. 따라서 단순모델은 실험에서 사용된 하중하에서는 결합부위의 거동을 잘 묘사하지만, 그외 다른 하중하에서는 결합부위의 거동을 어느 정도 구현할지 알 수 없다. 따라서 단순모델의 정확성을 객관적으로 얻을 수 있는 방법이 필요하게 된다. 본 연구에서는 역최적화 (antioptimization) 개념으로 최악의 하중조건을 정의하여, 이 하중하에서 단순모델의 정확성을 평가하는 방법을 제시하였다. 최악의 하중조건 하에서, 용접으로 체결된 3차원 결합부위의 단순모델과 2차원 구조물에서의 결합부위 단순모델의 정확성을 평가하였다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

References

  1. A Survey on Joint Investigations at Ford, Interim Report in Ford Motor Co. Sin, H.F.;Hosseini, A.K.;Zebrowski, M.P.;Dorenabum, J.V.
  2. SAE Transactions v.83 Effects of Flexible Connections on Body Structural Response Chang, D.C.
  3. Proceedings of International Symposium on Automotive Technology and Automation v.2 Automotive Body Joint Analysis for Improved Vehicle Response Rao, M.K.;Zebrowski, M.P.;Crabb, H.C.
  4. An Application of Structural-Acoustic Coupling Analysis to Boom Noise, SAE Paper No. 891996 Yamazaki, I.;Inoue, T.
  5. Ship Structural Design : A Rationally-Based, Computer-Aided Optimization Approach Hughes, O.F.
  6. Structural Joint Stiffness of Automotive Body, SAE International Congress and Exposition, SAE Paper No. 880550 Sakurai, T.;Kamada, Y.
  7. Stiffness of the Rear Suspension Crossmember to Rail Joint, Interim Report in Ford Motor Co. Whitney, R.
  8. Computers and Structures v.68 Effect of Member Length on the Parameter Estimates of Joints Lee, K.;Nikolaidis, E.
  9. The Shock and Vibration Digest v.22 no.10 On the Uncertainty Triangle Elishakoff, I.
  10. Convex versus Probabilistic Modeling of Uncertainty in Structural Dynamics, Structural Dynamics : Recent Advances Elishakoff, I.
  11. 34-th AIAA/ASME/ASCE/AHS/ASC SDM Conference The Use of Antioptimization to Compare Alternative Structural Models Gangadharan, S.N.;Nikolaidis, E.;Lee, K.;Haftka, R.T.
  12. ASME Winter Annual Meeting The Use of Optimization for Sharpening Differences between Failure Models Haftka, R.T.;Kao, P.J.
  13. SAE Transactions v.101 A 3-D Joint Model for Automotive Structures Nikolaidis, E.;Lee, K.
  14. Linear Algebra and Its Applications Strang, G.