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Actran is a general purpose finite element program for modelling sound propagation, transmission and absorption in an acoustic, vibro-acoustic or aero-acoustic
-acoustic fluid;

-thin acoustic layer and narrow tubes (or channels) including viscothermal effects;

-visco-elastic solids, solid shells, thin shells and beams;

-incompressible solids;

-composite materials;

-lumped mass and springs (discrete structural elements);

-rigid porous, lumped porous and poro-elastic materials (Biot theory)

-linear and quadratic

-2D, 3D and axisymmetric

-standard volume elements and special transverse elements for the

-accurate modelling of special configurations: shells, stiffeners, thin acoustic layers

-conjugated infinite elements or adaptive PML elements for acoustic radiation

-acoustic sources;

-incident and free duct modes for rotating machines;

-pressure, velocity, acceleration and admittance boundary conditions;

-kinematical excitations : imposed displacements and rotations;

-mechanical excitations : point load, distributed load, distributed pressure, moments;

-in-build models of real-life excitations : incident diffuse sound field or

-interface with the leading structural FEA software packages (Nastran, Ansys and Abaqus) for the import of dynamical results

-interface with the leading CFD software packages (among others:Fluent, star-CD and CFX) for the import of the heterogeneities of the acoustic medium and the computation of the aero-acoustic sources

-volume-based and surface-based aerodynamic source terms (Lighthill's and Möhring's analogies) for analyzing broad-band noise generation by turbulent flows;

-sound propagation and absorption in a non-uniformly moving fluid;

-sound propagation in non-isothermal conditions;

-sound propagation in rotating acoustic components;

-sound propagation taking into account visco-thermal losses occurring in thin air layers, tubes or arbitrarily-shaped cavities

-random acoustics in both modal and physical coordinates;

-direct frequency response analysis

-modal frequency response analysis using existing Actran, Ansys or Nastran normal modes

-compressible flow analysis

-modal extraction

-restart capability

-multiple load capability

-strong or weak vibro-acoustic coupling

-multi-level sequence tree to avoid unnecessary re-computations

-hybrid Modal/Physical approaches in-core and out-of-core solvers supporting sequential and parallel (SMP and DMP) computer architectures

-fast frequency response synthesis using the KRYLOV solver.

OSindows 10/Windows 7 (with SP1)

CPU: any x86-64 processor that supports the SSE3 extensions (such as the AMD Opteron and Intel Xeon)

GPU: NVidia Tesla K40, K80 or P100*

GraphicspenGL-3.2



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