Validation of High Displacement Piezoelectric Actuator Finite Element Models

Validation of High Displacement Piezoelectric Actuator Finite Element Models PDF

Author: Barmac K. Taleghani

Publisher:

Published: 2000

Total Pages: 24

ISBN-13:

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The paper presents the results obtained by using NASTRAN® and ANSYS® finite element codes to predict doming of the THUNDER piezoelectric actuators during the manufacturing process and subsequent straining due to an applied input voltage. To effectively use such devices in engineering applications, modeling and characterization are essential. Length, width, dome height, and thickness are important parameters for users of such devices. Therefore, finite element models were used to assess the effects of these parameters. NASTRAN® and ANSYS® used different methods for modeling piezoelectric effects. In NASTRAN®, a thermal analogy was used to represent voltage at nodes as equivalent temperatures, while ANSYS® processes the voltage directly using piezoelectric finite elements. The results of finite element models were validated by using the experimental results.

Structural Health Monitoring, Photogrammetry & DIC, Volume 6

Structural Health Monitoring, Photogrammetry & DIC, Volume 6 PDF

Author: Christopher Niezrecki

Publisher: Springer

Published: 2018-05-29

Total Pages: 215

ISBN-13: 3319744763

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Structural Health Monitoring Photogrammetry & DIC, Volume 6: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics, 2018, the sixth volume of nine from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Health Monitoring & Damage Detection, including papers on: Structural Health Monitoring Damage Detection System Identification Active Controls

ICCS20 - 20th International Conference on Composite Structures

ICCS20 - 20th International Conference on Composite Structures PDF

Author: Nicholas Fantuzzi

Publisher: Società Editrice Esculapio

Published: 2017-07-24

Total Pages: 352

ISBN-13: 8893850419

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Composite materials have aroused a great interest over the last few decades, as proven by the huge number of scientific papers and industrial progress. The increase in the use of composite structures in different engineering practices justify the present international meeting where researches from every part of the globe can share and discuss the recent advancements regarding the use of structural components within advanced applications such as buckling, vibrations, repair, reinforcements, concrete, composite laminated materials and more recent metamaterials. Studies about composite structures are truly multidisciplinary and the given contributions can help other researches and professional engineers in their own field. This Conference is suitable as a reference for engineers and scientists working in the professional field, in the industry and the academia and it gives the possibility to share recent advancements in different engineering practices to the outside world. This book aims to collect selected plenary and key-note lectures of this International Conference. For this reason, the establishment of this 20th edition of International Conference on Composite Structures has appeared appropriate to continue what has been begun during the previous editions. ICCS wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures, sandwich panels, nanotechnology, bio-composites, delamination and fracture, experimental methods, manufacturing and other countless topics that have filled many sessions during this conference. As a proof of this event, which has taken place in Paris (France), selected plenary and key-note lectures have been collected in the present book.

Lamb-Wave Based Structural Health Monitoring in Polymer Composites

Lamb-Wave Based Structural Health Monitoring in Polymer Composites PDF

Author: Rolf Lammering

Publisher: Springer

Published: 2017-08-30

Total Pages: 479

ISBN-13: 3319497154

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The book focuses especially on the application of SHM technology to thin walled structural systems made from carbon fiber reinforced plastics. Here, guided elastic waves (Lamb-waves) show an excellent sensitivity to structural damages so that they are in the center of this book. It is divided into 4 sections dealing with analytical, numerical and experimental fundamentals, and subsequently with Lamb-wave propagation in fiber reinforced composites, SHM-systems and signal processing. The book is designed for engineering students as well as for researchers in the field of structural health monitoring and for users of this technology.

Cellular Actuators

Cellular Actuators PDF

Author: Jun Ueda

Publisher: Butterworth-Heinemann

Published: 2017-01-24

Total Pages: 382

ISBN-13: 0128037067

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Cellular Actuators: Modularity and Variability in Muscle-Inspired Actuation describes the roles actuators play in robotics and their insufficiency in emerging new robotic applications, such as wearable devices and human co-working robots where compactness and compliance are important. Piezoelectric actuators, the topic of this book, provide advantages like displacement scale, force, reliability, and compactness, and rely on material properties to provide displacement and force as reactions to electric stimulation. The authors, renowned researchers in the area, present the fundamentals of muscle-like movement and a system-wide study that includes the design, analysis, and control of biologically inspired actuators. This book is the perfect guide for researchers and practitioners who would like to deploy this technology into their research and products. Introduces Piezoelectric Actuators concepts in a system wide integrated approach Acts as a single source for the design, analysis, and control of actuator arrays Presents applications to illustrate concepts and the potential of the technology Details the physical assembly possibilities of Piezo actuators Presents fundamentals of bio inspired actuation Introduces the concept of cellular actuators

Responsive Systems for Active Vibration Control

Responsive Systems for Active Vibration Control PDF

Author: A. Preumont

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 395

ISBN-13: 9401004838

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Structural vibrations have become the critical factor limiting the performance of many engineering systems, typical amplitudes ranging from meters to a few nanometers. Many acoustic nuisances in transportation systems and residential and office buildings are also related to structural vibrations. The active control of such vibrations involves nine orders of magnitude of vibration amplitude, which exerts a profound influence on the technology. Active vibration control is highly multidisciplinary, involving structural vibration, acoustics, signal processing, materials science, and actuator and sensor technology. Chapters 1-3 of this book provide a state-of-the-art introduction to active vibration control, active sound control, and active vibroacoustic control, respectively. Chapter 4 discusses actuator/sensor placement, Chapter 5 deals with robust control of vibrating structures, Chapter 6 discusses finite element modelling of piezoelectric continua and Chapter 7 addresses the latest trends in piezoelectric multiple-degree-of-freedom actuators/sensors. Chapters 8-12 deal with example applications, including semi-active joints, active isolation and health monitoring. Chapter 13 addresses MEMS technology, while Chapter 14 discusses the design of power amplifiers for piezoelectric actuators.

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