Buckling Experiment on Anisotropic Long and Short Cylinders

  • Atsushi Takano Department of Mechanical Engineering, Kanagawa University, Yokohama, Japan
Keywords: buckling, cylinders, anisotropy

Abstract

A buckling experiment was performed on anisotropic, long and short cylinders with various radius-to-thickness ratios. The 13 cylinders had symmetric and anti-symmetric layups, were between 2 and 6 in terms of the length-to-radius ratio, between 154 and 647 in radius-to-thickness ratio, and made of two kinds of carbon fiber reinforced plastic (CFRP) prepreg with high or low fiber modulus. The theoretical buckling loads for the cylinders were calculated from the previously published solution by using linear bifurcation theory considering layup anisotropy and transverse shear deformation and by using deep shell theory to account for the effect of length and compared with the test results. The theoretical buckling loads for the cylinders were calculated from the previously published solution by using linear bifurcation theory considering layup anisotropy and transverse shear deformation and by using deep shell theory to account for the effect of length. The knockdown factor, defined as the ratio of the experimental value to the theoretical value, was found to be between 0.451 and 0.877. The test results indicated that a large length-to-radius ratio reduces the knockdown factor, but the radius-to-thickness ratio and other factors do not affect it.

References

A. Takano, “Statistical knockdown factors of buckling anisotropic cylinders under axial compression,” Journal of Applied Mechanics, vol. 79, 051004, pp 1-17, 2012.

A. Takano, “Improvement of Flügge’s equations for buckling of moderately thick anisotropic cylindrical shells,” AIAA Journal, vol. 46, no. 4, pp. 903-911, 2008.

Y. Takano, T. Masai, H. Seko, A. Takano, and M. Miura, “Development of the lightweight large composite-honeycomb-sandwich central cylinder for next-generation satellites,” Aerospace Technology Japan, vol. 10, pp.

-16, 2012.

Published
2016-07-01
How to Cite
[1]
A. Takano, “Buckling Experiment on Anisotropic Long and Short Cylinders”, AITI, vol. 1, no. 1, pp. 25-27, Jul. 2016.
Section
Articles