A finite element analysis approach with integrated PID control for simultaneous precision positioning and vibration suppression of smart structures

2006 ◽  
Author(s):  
Richard Russ ◽  
Kougen Ma ◽  
Mehrdad N. Ghasemi-Nejhad
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Pid Control ◽  
Vibration Suppression ◽  
Smart Structures ◽  
Analysis Approach ◽  
Precision Positioning ◽  
Element Analysis

Finite Element Analysis and Vibration Suppression Control of Smart Wind Turbine Blade

2011 ◽  
Vol 19 (3-4) ◽  
pp. 747-754 ◽  
Author(s):  
Yin-hu Qiao ◽  
Jiang Han ◽  
Chun-yan Zhang ◽  
Jie-ping Chen ◽  
Ke-chuan Yi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Vibration Suppression ◽  
Wind Turbine Blade ◽  
Element Analysis

Finite element analysis of thermopiezoelectric smart structures

2002 ◽  
Vol 154 (1-4) ◽  
pp. 129-140 ◽  
Author(s):  
A. G�rnandt ◽  
U. Gabbert
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Smart Structures ◽  
Element Analysis

Unveiling the origin of a nonequilibrium dynamic process detected by X-ray photon correlation spectroscopyviaa finite element analysis approach

2014 ◽  
Vol 70 (4) ◽  
pp. 338-347 ◽  
Author(s):  
Li Ma ◽  
Fan Zhang ◽  
Andrew Allen ◽  
Lyle Levine
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Approach ◽  
Element Analysis ◽  
Nonequilibrium Processes ◽  
Photon Correlation ◽  
X Ray ◽  
X Ray Scattering ◽  
Nonequilibrium Dynamic ◽  
Ray Scattering

It is a scientific and engineering challenge to characterize materials under nonequilibrium conditions. In recent years, X-ray photon correlation spectroscopy (XPCS), a synchrotron-based coherent X-ray scattering technique, has been found useful in determining the timescales associated with various nonequilibrium processes, with detailed descriptions of the underlying processes lacking. Here, both static ultra small angle X-ray scattering (USAXS) and dynamic USAXS-based XPCS were used to investigate a transient structural change (a nonequilibrium process) associated with an isothermal anneal in a glass polymer composite system. While the bulk USAXS technique lacked the required sensitivity to detect the change in the microstructures, the local structural reorganization was apparent in the XPCS study. The structural changes were modeled using a three-dimensional finite element analysis approach and wave-propagation theory was used to simulate the resulting reciprocal-space coherent scattering intensity. Qualitative agreement was found between the modeling and experimental results, which validates that stress relaxation in the viscous polymer matrix was responsible for the observed changes. This analysis demonstrates that multi-physics modeling of complex systems can be used to interpret XPCS measurements of nonequilibrium processes.

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