ATILA is a finite element program that aids in the design of all structures that contain piezoelectric or magnetostrictive materials.
ATILA performs static, modal, harmonic, and transient analyses of structures that contain smart materials; the harmonic analysis of underwater radiating structures; and the static, modal, harmonic, or transient analysis of elastic structures.
ATILA can compute the displacement field, the strain and stress fields, the electric and magnetic fields, the resonance and antiresonance frequencies, the nodal plane position, the nearfield and far field pressures, the transmitting voltage response, the directivity pattern, the electrical impedance, and the effective coupling coefficients.
ATILA's element library includes 40 different elements:
ATILA's solver computes the mechanical displacements and rotations, the fluid pressure, and the electrical and magnetic potentials.
Internal losses in the materials can also be taken into account by using a complex representation of the physical quantities. Thus, the elastic, fluid, piezoelectric and magnetostrictive materials can include internal losses.
The fluid-structure interaction problems can be calculated by using a full finite element formulation with the interface elements. The fluid domain can be restricted to the very nearfield by using dipolar damping elements.
Modelling of periodic structures (1D and 2D) using Bloch-Flocquet boundary conditions to restrain the mesh to a unit cell is also possible.
Harmonic analyses may include multiple electric and/or magnetic excitation sources; each excitation can be defined with its own angle of phase.
ATILA's post-processors produce clear graphical displays of the results, including color shading maps and arrow plots of the computed electric, magnetic, stress and pressure fields. The computed strained shape of the structure, directivity patterns, and impedance curves can also be displayed. Listings of the numerical results are also provided.
Finally, ATILA's post-processors create animated sequences from the results of harmonic analysis.
ATILA can perform the following analyses:
ATILA was developed by the Institut Superieur d'Electronique du Nord, Laboratoire d'Acoustique, 41, Boulevard Vauban, 59046 Lille Cedex, France. Tel: (33) 20 30 62 20 Fax: (33) 20 54 56 66.
ATILA users in France: the French Navy, Schlumberger, Cedrat Recherche, Eramer, ISA;
In the USA: National Research Laboratory, Naval Undersea Warfare Center, Naval Post Graduate School, Georgia Tech University;
In Japan: OKI;
In Korea: Tae Sung.
If you would like more information about this product please contact Philippe Bouchilloux at Magsoft.
