ACTRAN Modules

Products overview

 ACTRAN is the most complete CAE tool for Acoustic, Aero-acoustic and Vibro-acoustic modelling.  ACTRAN is based on the finite and infinite element methods  ACTRAN in a nutshell . Material library: • Acoustic FE and IE (flow, temperature, visco-thermal effects) • Visco-elastic solid & shell (freq. dependent properties) • Poro-elastic (Biot model) and porous rigid (Craggs model) • Piezo-electric and composite materials . Excitations & BC’s: • Structural (interfaced with Nastran, Ansys, Abaqus) • Turbulent boundary layer (Corcos), diffuse sound field • Aerodynamic Noise & CAA (Lighthill analogy) • Fan noise through incident spinning duct modes  ACTRAN is linked to many other CAE tools: . Pre- and post-processors . Structural analysis programs . Computational Fluid Dynamics programs

2 Copyright Free Field Technologies ACTRAN Modules

ACTRAN for NASTRAN ACTRAN DGM

ACTRAN Vibro-Acoustics ACTRAN Aero-Acoustics ACTRAN TM

ACTRAN Acoustics ACTRAN VI ACTRAN

3 Copyright Free Field Technologies ACTRAN Acoustics

 Contains all acoustic as well as  Applications: weak vibro-acoustic coupling . Sound radiation from vibration structures features of ACTRAN . Sound diffraction by rigid obstacles . Finite elements . Propagation in ducts . Infinite elements . Acoustic resonances . Acoustic elements including visco- thermal loss effects  Replaces and contains modules . Convected wave propagation previously known as:  Is a pre-requisite for all advanced . ACTRAN/AR ACTRAN modules: . ACTRAN/VA acoustic features . MSC.Actran Package 1 . ACTRAN Vibro-Acoustics . ACTRAN Aero-Acoustics . ACTRAN TM

4 Copyright Free Field Technologies ACTRAN VibroAcoustics

 Contains all structural modelling  Applications: features as well as strong vibro- . Strongly coupled vibro-acoustic analysis acoustic features of ACTRAN . Acoustic transmission . Structural finite elements . Vibration of structures . Modal representation of the in a heavy fluid structure’s dynamic behaviour . Multi-domain, . Mechanical excitations multi-physics applications (incl. random excitations)  Replaces and contains modules  Requires previously known as: ACTRAN Acoustics . ACTRAN/VA as a pre-requisite . MSC.Actran Package 2, 4 and 5  Is a pre-requisite for: . ACTRAN/LS . ACTRAN for NASTRAN . ACTRAN/RM

5 Copyright Free Field Technologies ACTRAN Aero-acoustics

 Contains all advanced features for  Applications: aero-acoustics modelling . Fan noise . Interface to CFD codes . HVAC noise . Handling of Lightill source term  Replaces and contains modules . Handling of Möhring source term previously known as:  Requires . ACTRAN/LA ACTRAN Acoustics as a pre-requisite

6 Copyright Free Field Technologies ACTRAN TM

 Contains all advanced features for  Applications: modelling turbo-machinery noise . Aircraft engine turbofan noise . Convected wave propagation  Replaces and contains modules . Lined wall modelling previously known as: . Definition of acoustic excitation in . ACTRAN/TM terms of incident duct modes  Requires ACTRAN Acoustics as a pre-requisite

7 Copyright Free Field Technologies ACTRAN for NASTRAN

 Contains all advanced features for  Applications: mixing ACTRAN and NASTRAN . Trimmed body modelling using a NASTRAN body-in-white model and models . Acoustic transmission . Import of NASTRAN super-elements . Vibration of structures in ACTRAN Vibro-Acoustics in a heavy fluid . Export of ACTRAN impedance . Multi-domain, matrices to NASTRAN multi-physics applications . Trimmed body modelling using an updated modal approach  Replaces and contains modules  Requires previously known as: ACTRAN Vibro-Acoustics . ACTRAN/VA . MSC.Actran Package 2, 4 and 5 as a pre-requisite . ACTRAN/LS . ACTRAN/RM

8 Copyright Free Field Technologies ACTRAN DGM

 Contains advanced features for  Applications: modelling complex turbo-machinery . Aircraft engine turbofan noise noise problems  Replaces and contains modules . Solves Linearized Euler Equations previously known as: (LEE) . ACTRAN/DGM . Using a Discontinuous Galerkin Method . Accounts for complex background flow and temperature fields  Requires ACTRAN TM as a pre-requisite

9 Copyright Free Field Technologies ACTRAN VI

 Provides a unified pre- and post-  Replaces and contains modules processor for all ACTRAN modules previously known as:  Start from an existing mesh in BDF . ACTRAN/VI (Nastran), UNV, Actran, RST (Ansys), CDB (Ansys), NFF, Patran Neutral Format