<i>Smart Structures, Analysis and Design</i>

Srinivasan, Anand; McFarland, D. Michael; Spillman, William B.

doi:10.1119/1.1407258

Cited by 64 publications

(38 citation statements)

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“…For example, for the case of the Clamped Free problem, where the number of actuators is 18, 55 runs were performed using initial values generated with different random seed for each run. Results showed that for this particular case the maximum value of fitness function 2 f was 31.45, the minimum value was 27.35, the average value was 29.35, the standard deviation was 0.97, and the range of values was 4.1. Similar results were obtained for other instances of the problem demonstrating that the approach is fairly robust giving consistently good results.…”

Section: The Location and Voltage Problemmentioning

confidence: 80%

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Actuator Location and Voltages Optimization for Shape Control of Smart Beams Using Genetic Algorithms

et al. 2013

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This paper presents a numerical study on optimal voltages and optimal placement of piezoelectric actuators for shape control of beam structures. A finite element model, based on Timoshenko beam theory, is developed to characterize the behavior of the structure and the actuators. This model accounted for the electromechanical coupling in the entire beam structure, due to the fact that the piezoelectric layers are treated as constituent parts of the entire structural system. A hybrid scheme is presented based on great deluge and genetic algorithm. The hybrid algorithm is implemented to calculate the optimal locations and optimal values of voltages, applied to the piezoelectric actuators glued in the structure, which minimize the error between the achieved and the desired shape. Results from numerical simulations demonstrate the capabilities and efficiency of the developed optimization algorithm in both clamped−free and clamped−clamped beam problems are presented.

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Section: The Location and Voltage Problemmentioning

confidence: 80%

“…The self−monitoring capability of smart structures has numerous applications in shape and vibration control of structures, noise reduction, damage identification, and structural "health" monitoring. Notable references among others are [1,2].…”

Section: Introductionmentioning

confidence: 99%

Actuator Location and Voltages Optimization for Shape Control of Smart Beams Using Genetic Algorithms

et al. 2013

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“…With reference to figure 12, following an analysis broadly similar to that in Srinivasan & Michael McFarland (2001), it can be shown that the piezo will cause the initially straight beam to bend to a radius R (measured from the beam mid-surface), with the ratio r of non-dimensional curvature to actuator free strain ratio being given by…”

Section: (I) Compositesmentioning

confidence: 99%

Designs for an adaptive tuned vibration absorber with variable shape stiffness element

et al. 2005

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An adaptive tuned vibration absorber (ATVA) with a smart variable stiffness element is capable of retuning itself in response to a time-varying excitation frequency, enabling effective vibration control over a range of frequencies. This paper discusses novel methods of achieving variable stiffness in an ATVA by changing shape, as inspired by biological paradigms. It is shown that considerable variation in the tuned frequency can be achieved by actuating a shape change, provided that this is within the limits of the actuator. A feasible design for such an ATVA is one in which the device offers low resistance to the required shape change actuation while not being restricted to low values of the effective stiffness of the vibration absorber. Three such original designs are identified: (i) A pinnedpinned arch beam with fixed profile of slight curvature and variable preload through an adjustable natural curvature; (ii) a vibration absorber with a stiffness element formed from parallel curved beams of adjustable curvature vibrating longitudinally; (iii) a vibration absorber with a variable geometry linkage as stiffness element. The experimental results from demonstrators based on two of these designs show good correlation with the theory.

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“…The phenomenon of energy harvesting based on piezoelectric transducers can be defined as the transformation of energy absorbed by a transducer from an operating environment to electric voltage that be used on the spot for actuation or stored in batteries for future usage [1][2][3][4]. As the world is shifting from electrical equipment to electronic devices due to the energy crisis, it is leading to a reduction in electrical power consumption, resulting in micro and nano powered electronic circuits [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A Review on Mechanisms for Piezoelectric-Based Energy Harvesters

2018

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From last few decades, piezoelectric materials have played a vital role as a mechanism of energy harvesting, as they have the tendency to absorb energy from the environment and transform it to electrical energy that can be used to drive electronic devices directly or indirectly. The power of electronic circuits has been cut down to nano or micro watts, which leads towards the development of self-designed piezoelectric transducers that can overcome power generation problems and can be self-powered. Moreover, piezoelectric energy harvesters (PEHs) can reduce the need for batteries, resulting in optimization of the weight of structures. These mechanisms are of great interest for many researchers, as piezoelectric transducers are capable of generating electric voltage in response to thermal, electrical, mechanical and electromagnetic input. In this review paper, Fluid Structure Interaction-based, human-based, and vibration-based energy harvesting mechanisms were studied. Moreover, qualitative and quantitative analysis of existing PEH mechanisms has been carried out.

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Smart Structures, Analysis and Design

Cited by 64 publications

References 0 publications

Actuator Location and Voltages Optimization for Shape Control of Smart Beams Using Genetic Algorithms

Actuator Location and Voltages Optimization for Shape Control of Smart Beams Using Genetic Algorithms

Designs for an adaptive tuned vibration absorber with variable shape stiffness element

A Review on Mechanisms for Piezoelectric-Based Energy Harvesters

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