Study on Buckling Strength of Composite Cylindrical Shells with Cut-outs

  Neethi.B,  Gisha George

The composite cylindrical shells are widely used in many structural forms in almost every engineering field and also in other applications of civil engineering. These thin shells and cylindrical panels are more prone to fail during buckling load rather than failure by material. In every airframes and missiles the cylindrical shell structures are made with composite materials having cut-outs for accessing internal components during integration. Hence there will be an invariable reduction in the strength due to the cut-outs of the composite cylindrical shell and is more and more specifically while a buckling load is acting. Since years it has been a design practice to improve the buckling strength by addition of any type of reinforcement around the cut-out. The effect of an imperfection like cut-out is that it not only introduces stress concentration but also significantly reduces the buckling strength. This paper studies the buckling strength of a composite cylindrical shell with cut-outs analytically. The study is also done with reinforcement around the cut-out. The results are compared with different cut-out shapes with and without discontinuities in the shell surface.

Keywords- Buckling, ANSYS, Reinforced Cut-outs, Cylindrical Shells, FEM

Unique Identification Number - IJEDR1504040
Page Number(s) - 278-283
Pubished in - Volume 3 | Issue 4 | 31 October 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Neethi.B,  Gisha George,   "Study on Buckling Strength of Composite Cylindrical Shells with Cut-outs", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 4, pp.278-283, 31 October 2015, Available at :http://www.ijedr.org/papers/IJEDR1504040.pdf