Numerical analysis of composite plates with multiple delaminations subjected to uniaxial buckling load

Abstract In this paper the buckling and post-buckling behaviour of unidirectional and cross-ply composite laminated plates with multiple delaminations has been studied. Finite elements analyses have been performed, using a linear buckling model, based on the solution of the eigenvalues problem, and a non-linear one, based on an incremental-iterative method. With non-linear method large displacements have been taken into account and also contact constraints between sublaminates have been added to avoid their interpenetration. It has been found that both delamination length and position and stacking sequence of the plies influence the critical load of the plate; furthermore, linear and non-linear buckling models are not always in perfect agreement.

[1]  D. Shu.  Buckling of multiple delaminated beams , 1998 .

[2]  Hideki Sekine,et al.  Compressive buckling analysis of rectangular composite laminates containing multiple delaminations , 2000 .

[3]  G. Kardomateas,et al.  Buckling of orthotropic beam-plates with multiple central delaminations , 1998 .

[4]  B. D. Agarwal,et al.  Analysis and Performance of Fiber Composites , 1980 .

[5]  C. Hong,et al.  Buckling and postbuckling behavior of composite cross-ply laminates with multiple delaminations , 1998 .

[6]  Hyo-Jin Kim.  Postbuckling analysis of composite laminates with a delamination , 1997 .

[7]  Chun-Gon Kim,et al.  Delamination Buckling and Growth of Composite Laminated Plates with Transverse Shear Deformation , 1993 .

[8]  Giulio Alfano,et al.  An interface element formulation for the simulation of delamination with buckling , 2001 .

[9]  J. Z. Zhu,et al.  The finite element method , 1977 .

[10]  Shun-Fa Hwang,et al.  Buckling behavior of composite laminates with multiple delaminations under uniaxial compression , 2001 .

[11]  H. Saunders.  Book Reviews : The Finite Element Method (Revised): O.C. Zienkiewicz McGraw-Hill Book Co., New York, New York , 1980 .

[12]  C. Hong,et al.  Buckling and postbuckling behavior of composite laminates with a delamination , 1994 .

[13]  Hsin-Piao Chen,et al.  Shear deformation theory for compressive delamination buckling and growth , 1991 .

[14]  S. Hwang,et al.  Failure of delaminated interply hybrid composite plates under compression , 2001 .