Reconsideration of the Joint Modelling Technique: In a Box-Beam T-Joint

Paper #:
  • 951108

Published:
  • 1995-04-01
Citation:
Kim, Y., Yim, H., Kang, J., and Kim, J., "Reconsideration of the Joint Modelling Technique: In a Box-Beam T-Joint," SAE Technical Paper 951108, 1995, https://doi.org/10.4271/951108.
Pages:
5
Abstract:
In this paper, joint modelling techniques are investigated in a box beam T-joint, which may be viewed as a simplified model of typical vehicle body joints. For low-frequency vibration analysis, joints are typically modelled by torsional spring elements and the importance of reasonable spring rates has been noted in many investigations. The effects of the joint branch lengths on the spring rates are investigated and it is shown that converging results are obtained only with proper branch lengths. We also discuss some facts to consider for estimating consistently the spring rates when the branches of T-joints meet at oblique angles. Finally, a possibility of using short beam elements instead of conventional spring elements to account for the joint flexibility is examined. The consequence of short beam modelling is that the sensitivity analysis on the natural frequencies with respect to the joint flexibility can be easily performed.
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