Effect of Fiber Waviness on Buckling Strength of Composite Plates

1999 ◽  
Vol 125 (10) ◽  
pp. 1173-1179 ◽  
Author(s):  
M. D. Pandey
Keyword(s):  
Composite Plates ◽  
Fiber Waviness ◽  
Buckling Strength

Effect of Fiber Orientation on the Critical Buckling Load of Symmetric Composite Laminated Plates

2012 ◽  
Vol 629 ◽  
pp. 95-99 ◽  
Author(s):  
N. Hamani ◽  
D. Ouinas ◽  
N. Taghezout ◽  
M. Sahnoun ◽  
J. Viña
Keyword(s):  
Fiber Orientation ◽  
Composite Plates ◽  
Laminated Plates ◽  
Buckling Load ◽  
The Finite Element Method ◽  
Notch Radius ◽  
Critical Buckling Load ◽  
Buckling Strength ◽  
Degree Of Anisotropy ◽  
Circular Notch

In this study, a buckling analysis is performed on rectangular composite plates with single and double circular notch using the finite element method. Laminated plates of carbon/bismaleimde (IM7/5250-4) are ordered symmetrically as follows [(θ/-θ)2]S. The buckling strength of symmetric laminated plates subjected to uniaxial compression is highlighted as a function of the fibers orientations. The results show that whatever the notch radius, the buckling load is almost stable. Increasing the degree of anisotropy significantly improves critical buckling load.

scholarly journals The buckling of Rectangular Composite Plates with Cutout under Uniaxial and Biaxial Compression

1992 ◽  
Vol 1 (1) ◽  
pp. 096369359200100
Author(s):  
Yoshiaki Yasui
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Compressive Loading ◽  
Composite Plates ◽  
Numerical Results ◽  
Biaxial Compression ◽  
Buckling Strength ◽  
Simply Supported ◽  
And Behavior ◽  
Carbon Fiber Epoxy

The buckling strength and behavior of the simply-supported rectangular FRP plate with a centrally located hole under uniaxial and biaxial compressive loading is elucidated as the numerical results of FEM. The composite materials consisting of carbon-fiber/epoxy are treated as the case of angle-ply and cross-ply orthotropic laminates.

Stochastic Finite Element Buckling Analysis of Laminated Plates With Circular Cutout Under Uniaxial Compression

2006 ◽  
Vol 74 (4) ◽  
pp. 798-809 ◽  
Author(s):  
A. K. Onkar ◽  
C. S. Upadhyay ◽  
D. Yadav
Keyword(s):  
Material Properties ◽  
Perturbation Technique ◽  
Compressive Loading ◽  
Laminated Composite ◽  
Composite Plates ◽  
Buckling Analysis ◽  
Laminated Plates ◽  
Buckling Strength ◽  
The Mean ◽  
Random Material Properties

A generalized stochastic buckling analysis of laminated composite plates, with and without centrally located circular cutouts having random material properties, is presented under uniaxial compressive loading. In this analysis, the layerwise plate model is used to solve both prebuckling and buckling problems. The stochastic analysis is done based on mean centered first-order perturbation technique. The mean buckling strength of composite plates is validated with results available in the literature. It has been observed that the present analysis can predict buckling load accurately even for plates with large cutouts. Micromechanics based approach is used to study the effect of variation in microlevel constituents on the effective macrolevel properties like elastic moduli. Consequently, the effect of uncertainty in these material properties on the buckling strength of the laminated plates is studied. Parametric studies are carried out to see the effect of hole size, layups, and boundary conditions on the mean and variance of plate buckling strength.

Elastic Web Buckling Strength of Pultruded Flexural Members

2004 ◽  
Vol 261-263 ◽  
pp. 621-626 ◽  
Author(s):  
Soon Jong Yoon ◽  
Jae Ho Jung ◽  
Won Sup Jang
Keyword(s):  
Orthotropic Plate ◽  
Numerical Technique ◽  
Ritz Method ◽  
Local Buckling ◽  
Composite Plates ◽  
Buckling Strength ◽  
Simply Supported ◽  
Web Buckling ◽  
Buckling Coefficient ◽  
The Web

This paper presents the analytical investigations pertaining to the elastic buckling behavior of orthotropic composite plates. By the pultrusion process the structural shapes composed of orthotropic plate components are readily available in the construction market. When the member is utilized for the flexure, lateral-torsional buckling and local buckling behaviors must be taken into consideration. In the local buckling analysis, flange and web local buckling analyses must be conducted in the design of such a member. For finding the web buckling strength, the buckling equation for the orthotropic plate under linearly distributed in-plane forces is derived by using the Rayleigh-Ritz method. The boundary conditions of plate are assumed that the loaded edges are simply supported and the unloaded edges are simply supported or fixedly supported. The buckling coefficient of a plate having different orthogonal mechanical properties is found by using the numerical technique and the minimum buckling coefficient is suggested. In addition, simplified form of equation for predicting the minimum buckling coefficient for the plate is proposed. Brief discussion on the design criteria relating to the web local buckling is also provided.

Effect of hygrothermal relaxation stresses during ageing for composite plates

2011 ◽  
Vol 99 (3) ◽  
pp. 305-316
Author(s):  
A. Benkhedda ◽  
E.A. Adda bedia ◽  
A. Tounsi ◽  
A. Mahi
Keyword(s):  
Composite Plates
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