The Effect of Transverse Shear on the Optimal Design of a Composite Plate

2010 ◽  
Author(s):  
Olaf Weckner ◽  
Vladimir Balabanov
Keyword(s):  
Optimal Design ◽  
Transverse Shear ◽  
Composite Plate

Analytical modeling of laminated composite plates integrated with piezoelectric layer using Trigonometric Zigzag theory

2020 ◽  
Vol 54 (29) ◽  
pp. 4691-4708
Author(s):  
Aniket Chanda ◽  
Rosalin Sahoo
Keyword(s):  
Transverse Shear ◽  
Piezoelectric Layer ◽  
Composite Plate ◽  
Laminated Composite ◽  
Composite Plates ◽  
Solution Technique ◽  
Shear Stresses ◽  
Smart Composite ◽  
Laminated Composite Plate ◽  
Zigzag Theory

The analytical solution for static analysis of laminated composite plate integrated with piezoelectric fiber reinforced composite actuator is obtained using a recently developed Trigonometric Zigzag theory. The kinematic field consists of five independent field variables accommodating non-linear variation of transverse shear strains through the thickness of the laminated composite plate. The principle of minimum potential energy is adopted to derive the governing equations of equilibrium. Navier’s solution technique is employed to convert the system of coupled partial differential equations into a system of algebraic equations. The electric potential is assumed to vary linearly through the thickness of the piezoelectric layer. The analytical formulation also does not include voltage as an additional primary variable. The response in the form of deflection and stresses are obtained for smart composite plates subjected to electro-mechanical loads and compared with the elasticity solutions and available results reported by other researchers in the existing literature. The transverse shear stresses are accurately determined by an efficient post-processing technique of integrating the equilibrium equations of elasticity. Parametric studies on actuation in the response of the smart composite plate are also presented graphically in order to have a clear understanding of the static behavior.

Optimal Design of Laminated Composite Plates for Maximum Buckling Load Using Genetic Algorithm

2005 ◽  
Vol 219 (9) ◽  
pp. 869-878 ◽  
Author(s):  
C. W. Kim ◽  
J. S. Lee
Keyword(s):  
Genetic Algorithm ◽  
Optimal Design ◽  
Uniaxial Compression ◽  
Composite Plate ◽  
Laminated Composite ◽  
Composite Plates ◽  
Buckling Load ◽  
Laminated Composite Plates ◽  
Worst Case ◽  
Case Design

An optimization procedure using a genetic algorithm (GA) is proposed to determine the optimal stacking sequence of laminated composite plates for the maximum buckling load under several different loadings, such as uniaxial compression, shear, biaxial compression, and the combination of shear and biaxial loadings. A series of optimal design is conducted for composite laminates having different aspect ratios, load conditions, and number of plies. Critical buckling load is taken as fitness function and fibre orientations are taken as design variables. A performance index is introduced to represent the effectiveness of optimal design with respect to worst case design. Then, for uniaxial compression loading, postbuckling behaviour is analysed numerically for the optimally designed composite plates as well as the worst case design composite plate. It shows the outstanding postbuckling performance of one of the optimally designed composite plates against the worst case design composite plate. Also, a GA finds the global solution without requiring auxiliary information such as derivatives of the objective function.

A discrete model for the optimal design of thin composite plate-shell type structures using a two-level approach

1995 ◽  
Vol 30 (2) ◽  
pp. 147-157 ◽  
Author(s):  
C.M.Mota Soares ◽  
V.Franco Correia ◽  
H. Mateus ◽  
J. Herskovits
Keyword(s):  
Optimal Design ◽  
Composite Plate ◽  
Discrete Model ◽  
Shell Type
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