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Applications of ATILA FEM Software to Smart Materials

Applications of ATILA FEM Software to Smart Materials
  • Author : Kenji Uchino,Jean-Claude Debus
  • Publisher : Elsevier
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM Software to Smart Materials

ATILA Finite Element Method (FEM) software facilitates the modelling and analysis of applications using piezoelectric, magnetostrictor and shape memory materials. It allows entire designs to be constructed, refined and optimized before production begins. Through a range of instructive case studies, Applications of ATILA FEM software to smart materials provides an indispensable guide to the use of this software in the design of effective products. Part one provides an introduction to ATILA FEM software, beginning with an overview of the software

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : K. Uchino
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

The finite element method and its application to smart transducer systems are introduced in this chapter. The fundamentals of finite element analysis are introduced first. Then, the section ‘Defining the equations for the problem’ treats how to integrate the piezoelectric constitutive equations, and ‘Application of the finite element method’ describes the meshing. The last section ‘FEM simulation examples’ introduces six cases; multilayer actuator, Π-type linear ultrasonic motor, windmill ultrasonic motor, metal tube ultrasonic motor, piezoelectric transformer, and ‘cymbal’ underwater transducer,

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : K. Uchino
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

Finite element analysis can be applied to smart structures with piezoelectric or magnetostrictive materials rather successfully when neither the applying electric field nor the generating AC strain is very large and when the linear relation can be supposed in the strain vs electric field or the strain vs stress. However, further improvement in the FEM algorithm is required for high field or high power drive of the piezoelectric system, where nonlinear and hysteretic characteristics should be taken into account, as

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : A. Loussert,J.-C. Debus,G. Vanderborck
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

For underwater applications and manufacture of sonar for autonomous underwater vehicles (AUV), large areas of piezoelectric materials with very good electromechanical properties are often needed. Piezoelectric single crystals (typically the compositions PMN-PT or PZN-PT) are high-performance materials (high yields), but are difficult to manufacture in large areas while maintaining homogeneous properties. This study on the behavior of piezoelectric single crystals will be conducted with the use of a finite-element code (ATILA) which was developed at ISEN in collaboration with the

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : S.-H. Park
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

This chapter describes time domain analysis capabilities of ATILA which might be useful in evaluating acoustic wave propagation and reflection by transducers, transient signal response of sensors, and overshoot and ringing behaviors for actuators. Three examples from different application fields were selected to show how time domain analysis can be achieved in ATILA, focusing on an analytical approach in simulation modeling, decisions based on transient module parameters, and interpretation of time domain results.

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : J.-C. Debus
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

The damping of a structure can be obtained by a transfer of the vibratory energy into thermal energy (dissipation in an electrical resistance). The transfer is carried out by using piezoelectric materials (PZT piezoelectric plate) and is improved by charging the piezoelectric material by an electrical circuit. This chapter describes finite element-electric circuit matrices created in the ATILA code. First, analytical models have been developed for the damping of a piezoelectric cylinder and a cantilever beam with a PZT plate;

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : J.-C. Debus
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

The vibration and sound radiation of structures, like plates or shells stiffened by frames or ribs, is a problem of interest in the analysis of aircraft and marine structures. If the ribs are uniformly spaced, then the composite structure is spatially periodic. Many authors have proposed solutions for stiffened infinite shells with simple shapes. But, when the shape is more complicated, such as for a submarine or an aircraft, the numerical methods are not appropriate and the finite element method

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : J.-C. Debus
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

In this chapter, a coupled electromechanical thermal analysis is presented. For a steady-state solution, the thermal behaviour is weakly coupled to the electromechanical response. A simple model, a tonpilz, a doubled-ended and a flextensional transducer serve as validation of the numerical model compared to the analytical models. The transient thermal analysis is developed and the temperature and dissipated power distribution are obtained at each step. The validation concerns piezoelectric ring transducers driven at high power levels under continuous sine-wave drive.

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : A-C. Hladky-Hennion
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

Periodic structures have attracted considerable interest over the past three decades. Thus, passive structures with 1D or 2D periodicity are in standard use in underwater acoustics. Moreover doubly periodic active structures, such as 1–3 piezocomposite materials made of parallel piezoelectric bars embedded in a passive matrix, are also of great interest for mine hunting, underwater or medical ultrasonic imaging. In this chapter, a brief presentation of passive and active periodic structures is described. Then, the generic model developed for periodic studies

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : J-C. Debus
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

The aim of this chapter is to compare the new version of ATILA (ATILA++) with the previous one. In Section 2.3, the new developments in the pre- and post-processor are presented. Then in Section 2.5, a time comparison is made from several examples. With a first example which is a 3D electromechanical structure, the CPU and real times are compared for the computation of the 10 resonance and anti-resonance frequencies and for a harmonic analysis of 30 frequencies. The second example concerns a fluid

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : J-C. Debus
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

Traditional transmitting materials, such as PZT-8, exhibit some non-linearity in stress and temperature, but predicting performance under high stress and higher temperatures can be achieved by taking advantage of the weak coupling. One needs to predict the performance of these devices by considering the highly non-linear behaviour with a fully non-linear solution procedure in the ATILA finite element software package. The aim of this chapter is to analyze the behaviour of simple devices submitted to a harmonic analysis. Analytical models

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : A.-C. Hladky-Hennion
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

Phononic crystals (PCs) are usually defined as artificial materials made of periodic arrangement of scatterers embedded in a matrix. The band structure of PCs may present under certain conditions absolute band gaps: they display frequency ranges in which waves cannot propagate. This fact is analogous to photonic band gaps for electromagnetic waves. Therefore, such systems can be applied as noise and vibration isolation, acoustic wave guiding, acoustic filters, etc. Moreover, band structures of PCs may exhibit dispersion curves with a

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : S.-J. Yoon
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

Piezoelectric ultrasonic motors offer many advantages such as high retention being very controllable, high torque at low speed, light weight, simple structure and no electromagnetic field induction compared with the conventional electromagnetic motors. These advantages have helped to expand the application fields where precise position control and rotational/linear motions can be utilized. One of the most remarkable features of the compact ultrasonic motor is that it has higher design flexibility compared with that of the conventional electromagnetic motors whose

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Applications of ATILA FEM software to smart materials

Applications of ATILA FEM software to smart materials
  • Author : J.-C. Debus
  • Publisher : Elsevier Inc. Chapters
  • Release : 27 November 2012
GET THIS BOOKApplications of ATILA FEM software to smart materials

This chapter provides the utilization of piezoelectric polarization. In smart structures, the polarization and the electric field are not necessarily parallel to each other. However, applying an electric field in a particular direction may change the behaviour of the device. Sections 5.3 to 5.5 present the utilization of Cartesian polarization with different electric fields on a PZT cube and on a PZT ring to compare analytical and numerical (ATILA) solutions. On the same ring with a cylindrical polarization, analytical and numerical results

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Fundamentals and Applications of Nanophotonics

Fundamentals and Applications of Nanophotonics
  • Author : Joseph W. Haus
  • Publisher : Woodhead Publishing
  • Release : 09 January 2016
GET THIS BOOKFundamentals and Applications of Nanophotonics

Fundamentals and Applications of Nanophotonics includes a comprehensive discussion of the field of nanophotonics, including key enabling technologies that have the potential to drive economic growth and impact numerous application domains such as ICT, the environment, healthcare, military, transport, manufacturing, and energy. This book gives readers the theoretical underpinnings needed to understand the latest advances in the field. After an introduction to the area, chapters two and three cover the essential topics of electrodynamics, quantum mechanics, and computation as they

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