Shape enhancement of an eccentrically loaded column using piezoelectric actuator

Przybylski, J.; Kuliński, Krzysztof

doi:10.1016/j.engstruct.2018.07.014

Cited by 5 publications

(2 citation statements)

References 30 publications

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“…Another use of MEMS technology includes the measurement of envelope air leakage in buildings using a network of MEMS pressure sensors [5]. There are multiple actuation methods that MEMS devices can deploy for operation, such as electrostatic [6][7][8], piezoelectric [9], electromagnetic, and electrothermal [10,11]. Electrostatic and electrothermal actuations are two that are commonly used due to their simple operating principle, high energy density, and compatibility with other electronics.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Design Enhancement of Electrothermal Actuators for Microgripping Applications

Pour,

Ghommem,

Abdelkefi

2023

Applied Sciences

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Microgrippers are miniature tools that have the capability to handle and manipulate micro- and nano-scale objects. The present work demonstrates the potential impact of the incorporation of perforations on a ‘hot and cold arm’ electrothermal actuation mechanism in order to improve the operation of microgrippers in terms of arm opening and operating temperature. By applying a voltage to one arm and setting the other as a ground, the current passes through the electrothermal actuator and induces its displacement along the in-plane direction. The difference in the geometry of the two arms causes one arm to expand more than the other and this results in transverse bending. A computational model was developed using a finite element analysis tool to simulate the response of the thermal actuators with varying geometries and investigate the impact of incorporating perforations on the arms of the thermal actuators to enhance its performance in terms of deflection and operating temperature. The simulation results were compared to their experimental counterparts reported in the literature. A good agreement between the numerical and experimental data was obtained. A novel design of a microgripper, made of perforated electrothermal actuators, was introduced. Its main characteristics, including the tip opening of the gripper arms, the applied voltage, and the stress and temperature distributions, were analyzed using the developed computational model. Different perforation shape and distribution were investigated. The present study demonstrates the capability of perforations to enhance the operation of microgrippers as manifested by the obtained higher tip displacement and lower tip temperature in comparison to conventional microgripper designs made of non-perforated thermal actuators. Furthermore, the highest stress generated on the microgripper elements was found to be much lower than the yield strength of the constituent material, which indicates proper functioning without any mechanical failure.

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Section: Introductionmentioning

confidence: 99%

Modeling and Design Enhancement of Electrothermal Actuators for Microgripping Applications

Pour,

Ghommem,

Abdelkefi

2023

Applied Sciences

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“…One of those materials is a piezoceramic one. As a result of an applied voltage, the piezoceramic elements may generate additional forces which may lead to the bending [1] or prestressing [2]. This type of integration is possible because the piezoelements are being produced in a variety of shapes and sizes (rods, tubes, beams, discs, plates) and their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

The control of stability of a column subjected to specific load

Sokół¹

2019

J. Appl. Math. Comput. Mech.

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In this paper the problem of vibration control of a multi-member column subjected to the specific load is investigated. The vibration control is realized with the use of the piezoceramic element in the form of a rod that is connected to the host structure by means of the pins strengthened by rotational springs. The Hamilton's principle is used during formulation of the boundary problem. The results of the numerical simulations are focused on the correction of the characteristic curves shape at a different radius of the loading head.

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Numerical Simulation of Steel Columns of Industrial Buildings with Local Mechanical Damage During Explotation

Buzalo

Gontarenko

Chernykhovskiy

et al. 2022

Lecture Notes in Civil Engineering

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Shape enhancement of an eccentrically loaded column using piezoelectric actuator

Cited by 5 publications

References 30 publications

Modeling and Design Enhancement of Electrothermal Actuators for Microgripping Applications

Modeling and Design Enhancement of Electrothermal Actuators for Microgripping Applications

The control of stability of a column subjected to specific load

Numerical Simulation of Steel Columns of Industrial Buildings with Local Mechanical Damage During Explotation

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