Mixed finite element model for laminated composite beams

2002 ◽  
Vol 13 (3) ◽  
pp. 261-276 ◽  
Author(s):  
Y.M. Desai ◽  
G.S. Ramtekkar
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Mixed Finite Element ◽  
Laminated Composite ◽  
Element Model ◽  
Composite Beams ◽  
Laminated Composite Beams

Buckling Analysis of Laminated Composite Beams by Using an Improved First Order Formulation

2021 ◽  
Vol 1033 ◽  
pp. 156-160
Author(s):  
Shammely Ayala ◽  
Augusto Vallejos ◽  
Roman Arciniega
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Virtual Work ◽  
Three Dimensional ◽  
Laminated Composite ◽  
Element Model ◽  
Composite Beams ◽  
Lagrange Polynomials ◽  
First Order ◽  
Laminated Composite Beams

In this work, a finite element model based on an improved first-order formulation (IFSDT) is developed to analyze buckling phenomenon in laminated composite beams. The formulation has five independent variables and takes into account thickness stretching. Three-dimensional constitutive equations are employed to define the material properties. The Trefftz criterion is used for the stability analysis. The finite element model is derived from the principle of virtual work with high-order Lagrange polynomials to interpolate the field variables and to prevent shear locking. Numerical results are compared and validated with those available in literature. Furthermore, a parametric study is presented.

Effect of Shear Deformation on Bending of Laminated Composite Beams

1989 ◽  
Vol 111 (2) ◽  
pp. 159-164 ◽  
Author(s):  
F. Gordaninejad ◽  
A. Ghazavi
Keyword(s):  
Finite Element ◽  
Shear Deformation ◽  
Close Agreement ◽  
Mixed Finite Element ◽  
Laminated Composite ◽  
Beam Theory ◽  
Composite Beams ◽  
Closed Form Solutions ◽  
Parabolic Distribution ◽  
Laminated Composite Beams

A higher-order shear deformation beam theory is utilized to analyze the bending of thick laminated composite beams. This theory accounts for parabolic distribution of shear strain through the thickness of the beam. The predicted displacements show improvement over the Bresse-Timoshenko beam theory. Mixed finite element results are obtained for those cases where closed-form solutions are not available. The finite element and exact solutions are in close agreement. Numerical results are presented for single, two and three-layer beams under uniform and sinusoidal distributed transverse loadings.

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