Orientation and size effect of a rectangle cutout on the buckling of composite cylinders

Abstract In this article the effect of a rectangular cutout on the buckling behavior of a thin composite cylinder was investigated using numerical and experimental methods. To verify the finite element results, a limited number of tests was carried out on perforated and non-perforated glass/epoxy cylinders with [90/−23/23/90] layups. In the numerical analysis, linear and nonlinear approaches were employed to study the effect of initial imperfections on the buckling of the cylinders. Several key findings including the effects of cutout size and orientation, and the mutual effects of the cutout and initial imperfections on the buckling behavior were investigated in detail. In the presence of cutouts, the effect of initial imperfections on the buckling load is a function of the cutout size. In cylinders with rectangular cutouts, buckling analysis revealed that a rectangular cutout in the circumferential direction causes around 8% more reduction in the buckling load than the same cutout in the axial direction. Also, numerical findings illustrated that elastic stress concentration factors for the circumferential cutouts are much greater than those for the axial cutouts; thus premature failure around the cutout will trigger earlier buckling in the cylinder with circumferential cutouts.

[1]  C. Xie,et al.  Stress distribution analysis and optimization for composite laminate containing hole of different shapes , 2018 .

[2]  F. Taheri-Behrooz,et al.  Buckling of axially compressed composite cylinders with geometric imperfections , 2018 .

[3]  F. Taheri‐Behrooz,et al.  Neuber’s rule accounting for the material nonlinearity influence on the stress concentration of the laminated composites , 2017 .

[4]  Farid Taheri,et al.  Stability and post-buckling response of sandwich pipes under hydrostatic external pressure , 2011 .

[5]  M. Shokrieh,et al.  Experimental and numerical investigation of buckling behavior of composite cylinders with cutout , 2017 .

[6]  Mark W. Hilburger,et al.  Shell Buckling Design Criteria Based on Manufacturing Imperfection Signatures , 2003 .

[7]  Mark W. Hilburger,et al.  Response of composite shells with cutouts to internal pressure and compression loads , 1999 .

[8]  Chiara Bisagni,et al.  Perturbation-based imperfection analysis for composite cylindrical shells buckling in compression , 2013 .

[9]  Farid Taheri,et al.  Response of perforated composite tubes subjected to axial compressive loading , 2012 .

[10]  Richard Degenhardt,et al.  Investigation of Buckling Behavior of Composite Shell Structures with Cutouts , 2015, Applied Composite Materials.

[11]  Giulio Romeo,et al.  Numerical/experimental evaluation of buckling behaviour and residual tensile strength of composite aerospace structures after low velocity impact , 2016 .

[12]  Hsuan-Teh Hu,et al.  Optimization for buckling resistance of fiber-composite laminate shells with and without cutouts , 1990 .

[13]  P. Seide,et al.  Buckling of thin-walled circular cylinders , 1968 .

[14]  Mark W. Hilburger,et al.  Effects of Imperfections on the Buckling Response of Compression-Loaded Composite Shells , 2000 .

[15]  Hoang X. Nguyen,et al.  Stochastic buckling behaviour of laminated composite structures with uncertain material properties , 2017 .

[16]  M. Shokrieh,et al.  Post buckling analysis of shallow composite shells based on the third order shear deformation theory , 2017 .

[17]  Azam Tafreshi,et al.  Buckling and post-buckling analysis of composite cylindrical shells with cutouts subjected to internal pressure and axial compression loads , 2002 .

[18]  W. T. Koiter.  A translation of the stability of elastic equilibrium , 1970 .