Finite Element Analysis of Plastic Yielding at a Circular Hole in a Laminated Composite Plate Based on Refined Plate Theory

Due to the growing environmental awareness, the development of sustainable green composites is in high demand in composite industries, mainly in the automotive, aircraft, construction and marine applications. This work was an attempt to experimentally and numerically investigate the dynamic characteristics of Woven Flax/Bio epoxy laminated composite plates. In addition, the optimisation study on the dynamic behaviours of the Woven Flax/Bio epoxy composite plate is carried out using the response surface methodology (RSM) by consideration of the various parameters like ply orientation, boundary condition and aspect ratio. The elastic constants of the Woven Flax/Bio epoxy composite lamina needed for the numerical simulation are determined experimentally using two methods, i.e., the usual mechanical tests as well as through the impulse excitation of vibration-based approach and made a comparison between them. The numerical analysis on the free vibration characteristics of the composite was carried out using ANSYS, a finite element analysis (FEA) software. The confirmation of the FE model was accomplished by comparing the numerical results with its experimental counterpart. Finally, a comparison was made between the results obtained through the regression equation and finite element analysis.

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Neural Network Based Buckling Strength Prediction of Laminated Composite Plate with Central Cutout

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.592-594.560 ◽

2014 ◽

Vol 592-594 ◽

pp. 560-564 ◽

Cited By ~ 1

Author(s):

P. Emmanuel Nicholas ◽

K.P. Padmanaban ◽

D. Vasudevan ◽

I. Joseph Selvaraj

Keyword(s):

Neural Network ◽

Finite Element Analysis ◽

Finite Element ◽

Composite Plate ◽

Power Transmission ◽

Laminated Composite ◽

Composite Plates ◽

Inspection System ◽

Laminated Composite Plates ◽

Element Analysis

Laminated composite plates are greatly used in many applications where high specific strength and stiffness are mandatory. These structures may have holes in order to accommodate windows and doors if it is used for air craft structures or to provide cables and inspection system if it is used in the applications like power transmission systems and automobiles. The laminated composite plates with holes shall be analyzed using finite element analysis. It is necessary to optimize the parameters like thickness, fiber orientation, material and the stacking sequence to obtain the desired characteristics for these structures. But using finite element analysis makes the process more tedious job. With this in mind it is proposed here to construct the artificial neural network to predict the buckling behavior of the composite plate.

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Finite element analysis of laminated composite plates using high order shear deformation theory

Vietnam Journal of Mechanics ◽

10.15625/0866-7136/29/1/5590 ◽

2007 ◽

Vol 29 (1) ◽

pp. 47-57 ◽

Cited By ~ 5

Author(s):

Ngo Nhu Khoa ◽

Tran Ich Thinh

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Shear Deformation ◽

Degrees Of Freedom ◽

Plate Theory ◽

Shear Deformation Theory ◽

Laminated Composite ◽

Composite Plates ◽

Element Analysis ◽

Stress Boundary Conditions

A rectangular non-conforming element based on Reddy's higher-order shear deformation plate theory is developed. Although the plate theory is quite attractive but it could not be exploited as expected in finite-element analysis. This is due to the difficulties associated with satisfaction of inter-elemental continuity requirement and satisfy zero shear stress boundary conditions of the plate theory. In this paper, the proposed element is developed where Reddy's plate theory is successfully implemented. It has four nodes and each node contains 7 degrees of freedom. The performance of the element is tested with different numerical examples, which show its precision and range of applicability.

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