Geometrically Nonlinear Analysis of Smart Sandwich Plates

2015 ◽  
Vol 813-814 ◽  
pp. 1085-1089
Author(s):  
B. Basa ◽  
S. Das ◽  
Saroj K. Sarangi
Keyword(s):  
Nonlinear Analysis ◽  
Fiber Composite ◽  
Three Dimensional ◽  
Shear Deformation Theory ◽  
Element Model ◽  
Sandwich Plates ◽  
Geometrically Nonlinear ◽  
Geometrically Nonlinear Analysis ◽  
Active Fiber ◽  
Active Fiber Composite

This paper presents the geometrically nonlinear analysis of smart sandwich plates. The top surface of the plate is integrated with a layer of commercially available active fiber composite. Considering the First order shear deformation theory individually for each layer of the sandwich plate, a three-dimensional finite element model has been developed. The performance of active fiber composite for the smart control of geometrically nonlinear deflection of the sandwich plates has been studied and numerical results are presented.

Vibration Control of Sandwich Plates

2014 ◽  
Vol 612 ◽  
pp. 1-7
Author(s):  
B. Basa ◽  
Saroj K. Sarangi
Keyword(s):  
Vibration Control ◽  
Fiber Composite ◽  
Three Dimensional ◽  
Orientation Angle ◽  
Shear Deformation Theory ◽  
Element Model ◽  
Sandwich Plates ◽  
Constrained Layer Damping ◽  
Active Fiber ◽  
Active Fiber Composite

This paper presents the active control of vibrations of sandwich plates using piezoelectric composites (PZC). The top surface of the plate is integrated with the patches of active constrained layer damping treatment. Active fiber composite, one of the commercially available PZCs, is used as the material of the constraining layer of the patches and the constrained layer of the patch is composed of a viscoelastic material. Considering the first order shear deformation theory individually for each layer of the sandwich plate, a three-dimensional finite element model has been developed. The performance of active fiber composite for the smart vibration control of the sandwich plates has been studied and numerical results are presented. Emphasis has also been placed on investigating the effect of variation of piezoelectric fiber orientation angle in the constraining layer on the control authority of the patches.

A Three-Dimensional Geometrically Nonlinear Analysis of Pipelaying in an Ocean Environment

1981 ◽  
Vol 103 (2) ◽  
pp. 201-205
Author(s):  
S. Odorizzi ◽  
B. A. Schrefler
Keyword(s):  
Hydrostatic Pressure ◽  
Nonlinear Analysis ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Bending Stiffness ◽  
Ocean Floor ◽  
Geometrically Nonlinear ◽  
External Hydrostatic Pressure ◽  
Geometrically Nonlinear Analysis ◽  
Ocean Environment

A three-dimensional analysis for pipelines suspended between the ocean floor and a laying barge or a stinger is presented. The analysis performed is capable of handling not only variations in bending stiffness, weight and buoyancy, crosscurrents and lateral bay drift, but also the effects of external hydrostatic pressure and buckling of the pipes. For this purpose a total Lagrangian geometrically nonlinear analysis in space. Examples are given which demonstrate the versatility of the analysis proposed.

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