Localization of Vibration and Buckling Modes in Periodic Structures of Nonlinear Behaviour Due to Slightly Disordered Loading

2009 ◽  
Author(s):  
R.M.L.R.F. Brasil ◽  
P.M. Pimenta ◽  
P. Goldenberg
Keyword(s):  
Periodic Structures ◽  
Nonlinear Behaviour ◽  
Buckling Modes ◽  
Localization Of Vibration

scholarly journals Optimization of vibration energy localization in quasi-periodic structures

2018 ◽  
Vol 241 ◽  
pp. 01013
Author(s):  
Mariem Hbaieb ◽  
Najib Kacem ◽  
Mohamed Amine Ben Souf ◽  
Noureddine Bouhaddi ◽  
Mohamed Haddar
Keyword(s):  
Dynamic Behavior ◽  
Periodic Structure ◽  
Periodic System ◽  
Periodic Structures ◽  
Damping Coefficient ◽  
Vibration Energy ◽  
Energy Localization ◽  
Coupling Stiffness ◽  
Localization Of Vibration

A mechanical periodic structure in presence of component perturbations can be a seat of a localization of vibration energy. In fact, it is well known that mistuned components have larger response levels than those of perfect components. This results in a localized energy, which can be tapped via harvesting devices. In this study, the dynamic behavior of a quasi-periodic system consisting in weakly connected linear oscillators is investigated. The main objective is to optimize the mistuning parameter, the coupling stiffness and the damping coefficient in order to functionalize the imperfection, which leads to the maximization of the localized vibration energy.

Driven periodic structures in random environment

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-85-Pr10-87
Author(s):  
V. M. Vinokur
Keyword(s):  
Random Environment ◽  
Periodic Structures

Adaptive Control Scheme for Coupled Tank Process

2018 ◽  
pp. 89-95
Author(s):  
Vinodhini M.
Keyword(s):  
Adaptive Control ◽  
Nonlinear Behaviour ◽  
Simulation Studies ◽  
Input Output ◽  
Control Scheme ◽  
Direct Model ◽  
Multivariable Process ◽  
Model Reference Adaptive ◽  
Siso System ◽  
Adaptive Control Scheme

The objective of this paper is to develop a Direct Model Reference Adaptive Control (DMRAC) algorithm for a MIMO process by extending the MIT rule adopted for a SISO system. The controller thus developed is implemented on Laboratory interacting coupled tank process through simulation. This can be regarded as the relevant process control in petrol and chemical industries. These industries involve controlling the liquid level and the flow rate in the presence of nonlinearity and disturbance which justifies the use of adaptive techniques such as DMRAC control scheme. For this purpose, mathematical models are obtained for each of the input-output combinations using white box approach and the respective controllers are developed. A detailed analysis on the performance of the chosen process with these controllers is carried out. Simulation studies reveal the effectiveness of proposed controller for multivariable process that exhibits nonlinear behaviour.

On the linear theory of waves in media with periodic structures

1991 ◽  
Vol 161 (9) ◽  
pp. 201-209 ◽  
Author(s):  
Polina S. Landa ◽  
V.F. Marchenko
Keyword(s):  
Linear Theory ◽  
Periodic Structures
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