Modelling of piezoelectrically actuated bistable composites

Giddings, Peter; Kim, Hyunsun; Salo, Aki; Bowen, Chris R.

doi:10.1016/j.matlet.2011.01.015

Cited by 62 publications

(26 citation statements)

References 13 publications

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“…Giddings combined a finite element model of a Macro-Fiber Composite (MFC) with a bi-stable asymmetric laminate model. Both predicted shape and snap-through voltage of a piezo-actuated [0/90] laminate agreed well with experimental results [22] .…”

Section: Introductionsupporting

confidence: 79%

Study on a new concept of multi-stable lattice structure

Dai

2012

SPIE Proceedings

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A new multi-stable lattice structure which is assembled by rectangular bi-stable composite laminates is designed. The snap-through of rectangular cross-ply composite laminates and a lattice structure is numerically and experimentally studied. The experiments to measure the snapping force levels of rectangular laminates and lattice structures are conducted. A method based on commercial software ABAQUS to simulate the snap-through behaviors of lattice structures is presented. Snap through of lattice structures are successfully described with the use of this method. The same phenomenon between the FEA and experiments are observed. The predicted curvatures show a good agreement with experimental results while there are some errors between predicted and measured critical loads.

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Section: Introductionsupporting

confidence: 79%

Study on a new concept of multi-stable lattice structure

Dai

2012

SPIE Proceedings

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“…The laminate used for the experimental study was a carbon fibre reinforced plastic (CFRP) [−30/60] laminate consisting of two plies, each of 0.25 mm thickness. A square laminate of size 150 mm was manufactured using the standard lay‐up procedure using an intermediate carbon fibre‐thermoset prepreg sheet from Hexcel (T800/M21) [10]. The material properties are longitudinal elastic modulus, E 11 = 175 GPa, transverse elastic modulus, E 22 = 8.9 GPa, shear modulus, G = 4.5 GPa, Poisson’s ratio, ν 12 = 0.35, thermal expansion coefficients, α 1 = −0.09 × 10 −6 per °C and α 2 = 30 × 10 −6 per °C.…”

Section: Experimental Investigationmentioning

confidence: 99%

A Study of Bistable Laminates of Generic Lay‐Up for Adaptive Structures

Bowen

Betts

Giddings

et al. 2011

Strain

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Asymmetric laminates are known to exhibit two stable cylindrical states and one unstable saddle state. Such bistability has attracted attention in aerospace applications because of the potential low energy requirement to achieve a large deflection or change in shape. This paper presents experimental observations of a generic asymmetric [−30/60] laminate with and without piezoelectric actuation and compares against both energy‐based analytical and finite element (FE) models. It is observed that the analytical model offers a qualitative understanding of bistable behaviour, degree of curvature and overall shape but is unable to model the distinctive curvature changes near the boundaries which can be captured by the FE model. The investigation also presents the use of piezoelectric actuation to achieve snap‐through in both analytical and FE models, which is compared and validated with experimental characterisation.

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“…Different architectures of optical switches have been developed using mobile mirrors [3] or moveable optical fibers. [4] For the switching of the mobile part, several physical principles have been used as the electromagnetic, [5] electrostatic, [6] electro-thermal [7] or piezoelectric [8] effects. The electromagnetic effect is quite well adapted for digital actuation because a holding without any energy consumption can be easily obtained using the magnetic interaction with permanent magnets.…”

Section: Introductionmentioning

confidence: 99%

1X4 Optical Switch Based on Digital Actuator

Hajjar

Petit

Lamarque

et al. 2015

International Journal of Optomechatronics

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International audienceIn this article, an optical fiber switch based on a digital actuator is presented. Four discrete positions are obtained through a magnetic holding of a Mobile Permanent Magnet (MPM) placed in a fixed square cavity. The MPM can switch, thanks to Lorentz's force, between the four corners of the cavity. A 1X4 optical fiber switch is obtained by fixing a prismatic mirror on the top side of the MPM and an N × N switch array can be obtained using a matrix of this unit. After a presentation of the actuator principle, the optical switch is detailed and characterized for telecommunication purpose

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Modelling of piezoelectrically actuated bistable composites

Cited by 62 publications

References 13 publications

Study on a new concept of multi-stable lattice structure

Study on a new concept of multi-stable lattice structure

A Study of Bistable Laminates of Generic Lay‐Up for Adaptive Structures

1X4 Optical Switch Based on Digital Actuator

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