Effect of the Elastic Restraint by Adjacent Plate Component on the Local Buckling of Orthotropic Box-Shape Flexural Members

Abstract:

The local buckling analysis of thin walled member is generally conducted by modeling each plate component as an isolated plate with elastically restrained boundaries. When this analytical model is used for the orthotropic flexural members, it is necessary to obtain the degree of elastic restraint provided by adjacent plate. In this study, the equation to find the coefficient of elastic restraint by adjacent plate components of an orthotropic box-shape flexural member was derived by employing the energy approach, and the factors affecting the elastic restraint were briefly discussed. Using the suggested equation, the coefficient of elastic restraint was calculated, and the local buckling analysis was conducted according to the stepwise analytical procedure published by the authors. The theoretical predictions were in good agreement with results obtained by the closed-form solution. The local buckling strength of an orthotropic box-shape flexural member can be easily obtained through stepwise analytical procedure with the proposed equation that accounts for the effect of elastic restraint imposed by adjacent plate components.

• Periodical: Key Engineering Materials (Volumes 297-300)
• Pages: 1253-1258
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.297-300.1253
• Online since: November 2005
• Authors: Jae Ho Jung, Soon Jong Yoon, Sung Kun You, Seok Goo Youn
• Keywords: Box-Shape Flexural Member, Coefficient of Elastic Restraint, Elastically Restrained Orthotropic Plate, Local Buckling

References

[1] P. Qiao and G. Zou: Journal of Engineering Mechanics Vol. 128 No. 12 (2001), p.1324.

[2] L.P. Kollar: Journal of Structural Engineering Vol. 129 No. 11 (2003), p.1503.

[3] P. Qiao, J.F. Davalos and J. Wang: Journal of Structural Engineering Vol. 127 No. 3 (2000), p.245.

[4] F. Bleich: Buckling Strength of Metal Structures (McGraw-Hill, New York 1952).

[5] J.H. Jung, S.K. Jeong and S.J. Yoon: The Fourth Korea-Japan Joint Symposium (2003), p.83.

[6] B.J. Shih: Ph.D. Thesis (Georgia Institute of Technoloby, Atlanta 1994).

[7] J.H. Jung, S.J. Yoon and S.K. You: Journal of the Korean Society for Composite Materials Vol. 16 No. 5 (2003), p.28.

[8] S.M. Kwon, J.H. Jung, S.H. Chae and S.J. Yoon: Proceedings of the Conference of the Korean Society for Composite Materials Vol. 1 (Fall 2001), p.17.

[9] S.G. Lekhnitskii: Anisotropic Plates (Gordon and Breach 2nd printing, New York 1984).

[10] J.H. Jung: Ph.D. Thesis (Hongik University, Seoul 2004).