MSC Actran 2020.0 | 778.0 mb
Actran is a general purpose finite element program for modelling sound propagation, transmission and absorption in an acoustic, vibro-acoustic or aero-acoustic context. a large material library:

- 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)

a complete element library:
- 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

a rich set of boundary conditions, operating conditions and sources:
- 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

various models of turbulent boundary layer
- 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;

several unique features (non exhaustive list):
- 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;

multiple calculation procedures:
- direct frequency response analysis
- modal frequency response analysis using existing Actran, Ansys or Nastran normal modes
- compressible flow analysis
- modal extraction

various solution strategies:
- 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.

System Requirements:
OS:Windows 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*
Graphics:OpenGL-3.2

Website Home Page :
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http://www.mscsoftware.com]www.mscsoftware.com
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