scholarly journals Bending of cross-ply laminated composite beams with various boundary conditions and loading

2021 ◽  
Author(s):  
Jawad Karam Zaboon ◽  
Shatha Falih Jassim
Keyword(s):  
Boundary Conditions ◽  
Laminated Composite ◽  
Composite Beams ◽  
Various Boundary Conditions ◽  
Laminated Composite Beams

scholarly journals Free Vibration Analysis of Curved Laminated Composite Beams with Different Shapes, Lamination Schemes, and Boundary Conditions

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 1010 ◽  
Author(s):  
Bin Qin ◽  
Xing Zhao ◽  
Huifang Liu ◽  
Yongge Yu ◽  
Qingshan Wang
Keyword(s):  
Free Vibration ◽  
Boundary Conditions ◽  
Variational Approach ◽  
Shear Deformation Theory ◽  
Laminated Composite ◽  
Free Vibration Analysis ◽  
Composite Beams ◽  
Arbitrary Boundary ◽  
Correlated Parameters ◽  
Laminated Composite Beams

A general formulation is considered for the free vibration of curved laminated composite beams (CLCBs) with alterable curvatures and diverse boundary restraints. In accordance with higher-order shear deformation theory (HSDT), an improved variational approach is introduced for the numerical modeling. Besides, the multi-segment partitioning strategy is exploited for the derivation of motion equations, where the CLCBs are separated into several segments. Penalty parameters are considered to handle the arbitrary boundary conditions. The admissible functions of each separated beam segment are expanded in terms of Jacobi polynomials. The solutions are achieved through the variational approach. The proposed methodology can deal with arbitrary boundary restraints in a unified way by conveniently changing correlated parameters without interfering with the solution procedure.

scholarly journals Dynamic analysis of laminated composite beam using Timoshenko Beam Theory

2019 ◽  
Vol 8 (6) ◽  
pp. 190-196
Keyword(s):  
Boundary Conditions ◽  
Composite Beam ◽  
Volume Fraction ◽  
Laminated Composite ◽  
Composite Beams ◽  
Element Analysis ◽  
Geometric Ratio ◽  
Laminated Composite Beam ◽  
Dynamic Investigation ◽  
Laminated Composite Beams

The uses of laminated composite beams are increasing day by day in many industries. This laminated composite beam has been exposed under different dynamic loadings in mechanical operation. Therefore, the dynamic investigation of laminated composite beams (LCB) is very much necessary to forecast the catastrophe fail of the LCB components. At present, dynamic investigation of the LCB is carried out by the determining of fundamental frequency and mode shape. The special attentions like; in the design of geometry, orientation of fibres, layup of sections and boundary conditions are also analysed with referring the dynamical loadings and industry uses. The analysis procedures and results are validated with the reference results using finite element analysis software. Present research deals with the consequence of different volume fraction, boundary conditions and geometrical variation like aspect ratio, geometric ratio and length of E-glass polyester LCB. By altering different stacking sequences and these effects on mechanical properties as well as natural frequency are also analysed.

Ritz-Based Analytical Solutions for Bending, Buckling and Vibration Behavior of Laminated Composite Beams

2018 ◽  
Vol 18 (11) ◽  
pp. 1850130 ◽  
Author(s):  
Ngoc-Duong Nguyen ◽  
Trung-Kien Nguyen ◽  
Thuc P. Vo ◽  
Huu-Tai Thai
Keyword(s):  
Natural Frequencies ◽  
Laminated Composite ◽  
Composite Beams ◽  
Material Anisotropy ◽  
Height Ratio ◽  
Buckling Loads ◽  
Various Boundary Conditions ◽  
Fiber Angle ◽  
Order Variation ◽  
Laminated Composite Beams

In this paper, the Ritz-based solutions are developed for the bending, buckling and vibration behaviors of laminated composite beams with arbitrary lay-ups. A quasi-3D theory, which accounts for a higher-order variation of both the axial and transverse displacements, is used to capture the effects of both shear and normal deformations on the behaviors of composite beams. Numerical results for various boundary conditions are presented and compared with existing ones available in the literature. Besides, the effects of fiber angle, span-to-height ratio, material anisotropy and Poisson’s ratio on the displacements, stresses, natural frequencies and buckling loads of the composite beams are investigated.

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