Load characterization of high displacement piezoelectric actuators with various end conditions

Mulling, James; Usher, Tim; Dessent, B.; Palmer, Jeremy C.; Franzon, Paul D.; Grant, E.; Kingon, Angus I.

doi:10.1016/s0924-4247(01)00688-4

Cited by 55 publications

(34 citation statements)

References 4 publications

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“…A characteristic curvature is realized when an electrical �eld is applied to the actuator. e electric response displacement of these curved actuators can be expressed in a variety of ways, including tip displacement, dome height ℎ [23], or normalized dome height [24]. We represent the voltage response displacement in terms of curvature , where is the radius of curvature.…”

Section: Theorymentioning

confidence: 99%

Piezoelectric Microfiber Composite Actuators for Morphing Wings

Usher

Ulibarri

Camargo

2013

ISRN Materials Science

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Morphing wing technologies provide expanded functionality in piloted and robotic aircra, extending particular vehicle mission parameters as well as increasing the role of aviation in both military and civilian applications. However, realizing control surfaces that do not void the bene�ts of morphing wings presents challenges that can be addressed with micro�ber composite actuators (MFCs). We present two approaches for realizing control surfaces. In one approach, �ap-like structures are formed by bonding MFCs to each side of a metal substrate. In the other approach, MFCs are bonded directly to the wing. Counter intuitively, the �ap approach resulted in larger voltage actuation curvatures, with increased mass load. Actuation performance, de�ned as the ratio of curvature per applied voltage, was as large as 5.8 ± 0.2 × 10 −4 (kV⋅mm) −1 . e direct bonding approach reveals that at zero wing pressure, up to 63 ± 3 m of displacement could be realized.

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Section: Theorymentioning

confidence: 99%

Piezoelectric Microfiber Composite Actuators for Morphing Wings

Usher

Ulibarri

Camargo

2013

ISRN Materials Science

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“…When considering optimized compliant mechanism designed with the use of topology optimization, those effects are important, so geometric nonlinearities can play an important role in the final topology [3]. Also, in some cases, large displacements are observed near resonance [4], in new transducers designs [5] and in flexible structures controlled/sensed by piezoelectric materials [6]. One of the most studied topics in this area is the buckling control using piezoelectric materials [7], where the influence of highorder terms and the ability to simulate pre-and post-buckling behaviour are of the utmost importance.…”

Section: Introductionmentioning

confidence: 99%

An incremental Lagrangian formulation to the analysis of piezoelectric bodies subjected to geometric non‐linearities

Cardoso

Fonseca

2004

Numerical Meth Engineering

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SUMMARYAn incremental formulation to model geometric non-linearities in piezoelectric solids is presented. First, Lagrangian and Eulerian measures for the electric field and the electric displacement are discussed together with traditional mechanical measures. Using the Lagrangian energetic conjugated measures, Hamilton's principle is used to derive a consistent variational incremental description for the finite movement of a piezoelectric body. Those equations are approximated using the finite element method, and the resulting equations are solved using the Newton-Raphson method and arc-length constraints. Examples with non-linear behaviour such as stress stiffening, large rotations and limit points are presented.

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“…One of the main reasons for failure to find a suitable application for these devices are the boundary conditions dictated by the environment that the device would be used [1,2]. Piezoelectric actuators such as moonies [3], rainbows [4,5], unimorphs [6], thunders [7,8,9], and bimorphs [10,11] have been investigated and their properties and behavior are well documented.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Actuators for Synthetic Jet Applications

Mossi

Bryant

2003

MRS Proc.

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Synthetic jets have been identified and utilized widely in airflow control applications. These jets of air are usually created by the use of compressed air, or an electromechanically driven vibrating platform. All of these approaches produce desired results in airflow-control such as enhanced lift and increased maneuverability. Despite the results however, system weight, size, response time and force limit their use in aircraft applications where space is a premium. The objective of this study is to characterize the relevant properties for the design of a synthetic jet utilizing three types of piezoelectric actuators as mechanical diaphragms. The limiting parameters of the actuators for this application are shape and volumetric space. Thus, the actuators were circular with a diameter of 6.35 cm, and overall device cavity volume no larger than 147.5 cm 3 on a 7 cm x 7 cm areal coverage. The actuators tested were pre-stressed curved metallic unimorphs, bimorphs, and radial field diaphragms. These piezoelectric elements were chosen because of their geometry, quasi-isostatic topography and overall free-displacement. Each actuator was affixed about its perimeter in a cavity, and relevant parameters such as clamped displacement, and jet velocity though a pre-determined dimensional slot, were measured.

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Load characterization of high displacement piezoelectric actuators with various end conditions

Cited by 55 publications

References 4 publications

Piezoelectric Microfiber Composite Actuators for Morphing Wings

Piezoelectric Microfiber Composite Actuators for Morphing Wings

An incremental Lagrangian formulation to the analysis of piezoelectric bodies subjected to geometric non‐linearities

Piezoelectric Actuators for Synthetic Jet Applications

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