Compensation of Thermally Induced Distortion in Composite Structures using                 Macro-fiber Composites

Dano, Marie‐Laure; Gakwaya, Myriam; Jullière, Benjamin

doi:10.1177/1045389x06074679

Cited by 26 publications

(16 citation statements)

References 12 publications

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“…In order to validate the interaction model between the MFC and the structure presented in the Section 3.3, the static deflection of a fiberglass/epoxy cantilever laminated composite plate resulting from an electrical potential applied to the MFC actuator are compared with the results obtained experimentally by Dano et al (2007). In this experiment, the actuator (MFC-8523-P1 model) was bonded on a laminated composite plate The experiment consists in applying an electrical potential of 1000 Volts to the MFC.…”

Section: Resultsmentioning

confidence: 99%

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Optimal Placement of Piezoelectric Macro Fiber Composite Patches on Composite Plates for Vibration Suppression

Padoin¹,

Fonseca²,

Perondi³

et al. 2015

Lat. Am. j. solids struct.

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The increasing demand for light structures in important applications highlights the necessity for using advanced methods in their design, as the structural optimization and optimal control. With sensors and actuators integrated through control systems, these structures have the capacity of sensing environment changes, diagnose localized problems, store and process measured data. They are, then, able to take appropriate action to improve the efficiency of the system or to preserve their structural integrity and safety [Cheng et al. (2008)]. Important applications, according to Abstract This work presents a new methodology for the parametric optimization of piezoelectric actuators installed in laminated composite structures, with the objective of controlling structural vibrations. Problem formulation is the optimum location of a Macro Fiber Composite (MFC) actuator patch by means the maximization of the controllability index. The control strategy is based on a Linear Quadratic Regulator (LQR) approach. For the structural analysis, the modeling of the interaction between the MFC and the structure is made taking into account the active material as one of the orthotropic laminate shell layers. The actuation itself is modeled as an initial strain arising from the application of an electric potential which deforms the rest of the structure. Thereby, modeling the electric field and the electromechanical coupling within the actuator is avoided because these effects are considered analytically. Numerical simulations show that the structural model presents good agreement with numerical and experimental results. Furthermore, the results show that optimizing the location of the actuator in the structure helps the control algorithm to reduce induced structural vibration. KeywordsParametric optimization, macro fiber composite, LQR optimal control, laminated composite material. Crawley (1994), are systems that can sense induced vibration and, thus, applying forces to control the amplitudes. Smart structures are applied mainly in the aerospace industry, where they can be found, for instance, in flexible robot manipulators [Zimcik and Yousefi (2003)]. EduardoThe development of methods to design smart structures is a promising research field, fueled by the existing demand for these structures and the great range of possible applications. In the research area of structural design, the topologic and parametric optimization methods contribute efficiently in the design of lighter structures, decreasing costs and the material utilized, evidencing the sustainability aspects of these approaches [Haftka and Gürdal (1991), Bendsøe and Sigmund (2003)].Optimized structures usually present reduced mass and low internal damping. These features induce the occurrence of structural vibrations, which may cause undesirable operational effects, for instance in positioning accuracy. According to Preumont (2002), the use of an active control system integrated by sensors and actuators is crucial in smart structures. This article presents the applicatio...

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Section: Resultsmentioning

confidence: 99%

“…In the table 1 are shows the MFC and composite material properties which are utilized in research of Dano et al (2007). Dano et al (2007).…”

Section: Controlmentioning

confidence: 99%

Optimal Placement of Piezoelectric Macro Fiber Composite Patches on Composite Plates for Vibration Suppression

Padoin¹,

Fonseca²,

Perondi³

et al. 2015

Lat. Am. j. solids struct.

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“…To suppress the thermal deformation, the structural elements are often made of carbon fiber reinforced plastics (CFRPs) [1][2][3][4][5] , because some kinds of CFRPs have a negative linear expansion coefficient in the fiber direction and the thermal deformation can be canceled by arranging the CFRP orientations or combining them with metals adequately. Moreover, active shape control by using piezoelectric actuators on orbit has been also studied [6][7][8][9][10] . However, even though the structural elements are made of CFRPs, piezoelectric actuators still possibly deform thermally.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Thermal Strain Suppression Design of Piezoelectric Ceramic Actuators

Uchida

Ikeda

Senba

et al. 2016

AEROSPACE TECHNOLOGY JAPAN

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Piezoelectric ceramic actuators with less thermal strain were designed by symmetrically stacking two kinds of piezoelectric ceramics plates whose linear expansion coefficients were positive and negative, and their performance was evaluated. Three types of actuators were examined, which have a different stacking direction. The electromechanical material constants were evaluated by a one-dimensional model and the results were compared with a three-dimensional finite element analysis. The result showed that the piezoelectric constant of an actuator stacked in the perpendicular direction to the electric field was about three times larger than that of an actuator stacked in the parallel direction, even though the volume ratio between the two kinds of plates was almost the same between the stacking types. This is because most of the voltage in the latter type was distributed to the piezoelectric plate with low permittivity and low piezoelectric constant. Therefore, it is important to consider the stacking direction and the permittivity in the design of the actuators. The three-dimensional finite element analysis showed the linear expansion coefficient was not zero even though it was zero in the one-dimensional model. Therefore, three-dimensional analysis is necessary for precise design, although the one-dimensional model provides good estimation of the electromechanical property.

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“…Many works can be found with SMA [10,11] actuators or piezoactuators like macro-fiber composite (MFC) [12,13], but the interface strength between the actuator and the composite plays a crucial role in the time life of the structure that is a limit especially when the rigidity of the composite structure is high. To overcome problems of bonding between the actuator and the structure, the bimetallic strip effect coupled to an internal thermal actuation can be a solution.…”

Section: Introductionmentioning

confidence: 99%

Thermaly Active Structures for Shape Morphing Applications

L’Hostis

Buet-Gautier

Durand

2012

Smart Materials Research

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For shape morphing application, thermal activation coupling to a bimetallic strip effect can be a substitute for classical actuators, piezoelectrical or shape memory alloys. The controlled behaviour of composite material (CBCM) is a thermaly activated composite material. The thermal activation is made thanks to carbon yarns which are connected to a power supply. If the anisotropy of the structure is well organized, the desired deformation is reached when the temperature within the composite is rising. To obtain a CBCM morphing composite structure, it is necessary to design a specific structure. The aim of this work is to show that it is possible to adapt the CBCM principle in order to transform any kind of classical composite structure to an active structure. The first part of this work consists in presenting the experimental results for two examples of composite beams. The second part is about the active structure FEM modeling and the development of adapted tools for this particular design.

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Compensation of Thermally Induced Distortion in Composite Structures using Macro-fiber Composites

Cited by 26 publications

References 12 publications

Optimal Placement of Piezoelectric Macro Fiber Composite Patches on Composite Plates for Vibration Suppression

Optimal Placement of Piezoelectric Macro Fiber Composite Patches on Composite Plates for Vibration Suppression

Evaluation of Thermal Strain Suppression Design of Piezoelectric Ceramic Actuators

Thermaly Active Structures for Shape Morphing Applications

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