Scaled models for predicting buckling of delaminated orthotropic beam-plates

This study investigates the applicability of scaled models for predicting the buckling behavior of delaminated composites. Such a study is important since it provides the necessary scaling laws, and the factors which affect the accuracy of the scale models. Employment of similitude theory to establish similarity among structural systems can save considerable expense and time, provided that the proper scaling laws are found and validated. In this study a number of parametric studies are performed. The limitations and acceptable intervals of all parameters and corresponding scale factors are investigated. Particular emphasis is placed on the case of delamination buckling of orthotropic plates. Both complete and partial similarities are discussed. This study indicates that models with a different delamination size, depth and number of delaminations than those of the prototype are capable of predicting buckling loads of the prototypes with good accuracy.

[1]  Rami H. Haddad,et al.  Analytical Solution of Buckling of Beams with Two Delaminations , 2001 .

[2]  G. J. Simitses,et al.  Delamination buckling of flat laminates , 1995 .

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

[4]  G. Zhou,et al.  Investigation for the Reduction of In-plane Compressive Strength in Preconditioned Thin Composite Panels , 2005 .

[5]  George J. Simitses,et al.  SCALED MODELS FOR LAMINATED CYLINDRICAL SHELLS SUBJECTED TO EXTERNAL PRESSURE , 1997 .

[6]  R. Pidaparti,et al.  A micromechanical analysis to predict the cord-rubber composite properties , 1996 .

[7]  Azam Tafreshi,et al.  Global buckling behaviour and local damage propagation in composite plates with embedded delaminations , 2003 .

[8]  George J. Simitses,et al.  Structural Similitude and Scaling Laws for Buckling of Cross-Ply Laminated Plates , 1995 .

[9]  Davide Tumino,et al.  Numerical analysis of composite plates with multiple delaminations subjected to uniaxial buckling load , 2006 .

[10]  George J. Simitses,et al.  Scale models for laminated cylindrical shells subjected to axial compression , 1996 .

[11]  Ning Hu,et al.  Buckling Analysis of Elliptically Delaminated Composite Laminates with Consideration of Partial Closure of Delamination , 2000 .

[12]  Tonny Nyman,et al.  Equivalent Damage and Residual Strength for Impact Damaged Composite Structures , 2000 .

[13]  George J. Simitses,et al.  Design of scaled down models for stability of laminated plates , 1995 .

[14]  Jalil Rezaee Pazhand,et al.  Structural Similitude and Scaling Laws for Cross-Ply Laminated Plates , 1995 .