Numerical and Experimental Study of Buckling of Advanced Fiber Composite Cylinders Under Axial Compression

Abstract

Advanced lightweight laminated composite shells are increasingly being used in modern aerospace structures, for enhancing their structural efficiency and performance. Such thin-walled structures are susceptible to buckling when subjected to static and dynamic compressive stresses. In this paper, details of a numerical (FEM) and an experimental study on buckling of carbon fiber reinforced plastics (CFRP) layered composite cylinders under displacement and load controlled static and dynamic axial compression are reported. The effects of different types of loadings, geometric properties, lamina lay-up and amplitudes of imperfection on the strength of the cylinders under compression are studied. Accurate measurement of imperfections in the cylindrical surface is carried out in the specimens tested. It is shown that the buckling behavior of thin composite cylindrical shells can be evaluated accurately by modeling measured imperfections and material properties in FEM.

The effect of different geometrical imperfection of buckling of composite cylindrical shells subjected to axial loading

“…The results from the present ABAQUS models were compared with those from the experimental and numerical investigations reported by Priyadarsini, R. S et al (2012). It can be seen that the results of the present study, as shown in Figs.…”

“…The shell's surface opens out to a horizontal plane. The imperfection in the cylinder was taken as the radial distance between the best-fit cylinder and the actual shell surface, as measured in the work of Priyadarsini et al (2012).…”

“…The following observations are made from the comparison of the analyses and experiments of the specimen in the work of Priyadarsini et al (2012). The interpolation method and approximation of curves of Figs.…”

“…Comparison of the buckling of composite cylindrical shell (with imperfection) with the reference(Priyadarsini et al 2012) …”

Buckling Analysis of Composite Cylinders Subjected to Axial Compressive Loads

“…Subash et al [4] performed the buckling analysis of composite high pressure vessels and concluded that T-Sai Wu failure criteria can yield fairly good results with consistent accuracy for the composite pressure vessels. Priya darsini et al [5] performed the buckling analysis of cylinders with advanced composites. She said shown that the ultimate strength is affected by the method of loading (static, harmonic), the layup sequence, radius to thickness ratio and geometric imperfections.…”