MSC.Actran™ PRODUCT FAMILY MSC.visualNastran enterprise™

PACKAGES Simulation tools for acoustic and • MSC.Actran Standard (Generic Acoustic Solver), vibro-acoustic analysis • MSC.Actran for Exterior Acoustics, OVERVIEW • MSC.Actran for Trim Analysis, MSC.Actran is the most complete acoustics and vibro-acoustics software currently on the market. Under a common technological • MSC.Actran for Intake & Exhaust umbrella provided by the finite and infinite element method, Systems, MSC.Actran provides a rich library of elements, materials, boundary conditions, solution schemes and solvers. MSC.Actran is used by the • MSC.Actran for Random Vibro- most demanding engineers, researchers and teachers to solve Acoustics. challenging acoustics, vibro-acoustics and aero-acoustics problems. CAPABILITIES

• Supports finite and infinite elements

• Wide variety of material models • Mechanical • Acoustical • Special

• Solution sequences

MSC.Actran can predict the sound radiated from complex sound sources such as engines. • Solvers

• Integration/interfaces MSC.Actran APPLICATIONS

Sound radiation BENEFITS

For vibro–acoustic problems the structural vibrations can either be • Solve challenging acoustic, calculated in MSC.Actran itself, which has an accurate lock-free shell vibro–acoustic, and aero–acoustic element library and features all required material models including problems with simulation imcompressible and visco-elastic materials, or can be imported from previously obtained finite element analysis results. For other problems, • Save time and money through sources can be modeled by any combination of plane wave, reduction of physical prototyping monopoles, dipoles, quadrupoles or user-defined acoustic sources. • Gain confidence in your design Sound propagation before committing to hardware

MSC.Actran contains unique features for predicting the propagation of sound in ducts such as propagation through non-uniform mean flow, excitation by incident duct modes of any order and of any shape, and calculation of transfer matrices. This makes MSC.Actran ideally suited for studying exhaust components, intake manifolds or engine nacelles. MSC.Actran is ideally suited for studying exhaust Analysis of sound transmission through sandwich components or engine manifolds. structures is supported with MSC.Actran.

FINITE ELEMENTS

• 2D, 3D and axisymmetric; • incompressible elastic material;

• linear and quadratic; • porous material with rigid frame (Cragg's model);

• triangles and quadrangles; • poro-elastic material (Biot model, u-p and u-w implementation); • tetrahedra, wedges and blocks; • Allard-Champoux-Johnson micro-model for porous • no-locking solid shell elements; materials;

• node-to-node and node-to-ground spring elements • thin air layer including visco-thermal loss mechanisms.

• lumped mass elements; FLEXIBILITY

• handling of unequal meshes (weak and strong coupling). All elements and material models may be combined in a single model. The global mesh of various non-congruent INFINITE ELEMENTS parts. There is no need to ensure that different components, physically coupled to one another, have For radiation, transmission and scattering analysis: nodes at the same location or elements of the same size.

• conjugated infinite element library; BOUNDARY CONDITIONS

• stable up to very high radial interpolation order (p>50); Mechanical:

• linear and quadratic interpolation in other directions; • fixed displacement: restraint (SPC) or enforced motion;

• triangular and quadrangular base. • point load;

MATERIAL MODELS • distributed load;

• acoustic fluid: air, water, oil; • pressure;

• visco-elastic material; Acoustical: SOLVERS

• normal acoustic impedance; • in-core and out-of-core direct skyline or sparse solver; • acceleration, velocity, or displacement; • unique fast FRF synthesis solver for the quick • impervious surface; generation of accurate and high-definition frequency response functions; • acoustic sources: point source, line source, plane wave source, distributed volume source; • SuperLU parallel solver for distributed and shared memory architectures. Special:

• incident diffuse sound field; INTEGRATION / INTERFACES

• Corcos turbulent boundary layer model; Input interfaces:

User programmable subroutines available for all boundary • MSC.™ bulk data file to MSC.Actran data file conditions. converter;

SOLUTION SEQUENCES • MSC.Actran for MSC.Patran™ preference;

• MSC.Actran icon panel in SDRC® IDEAS Master Series.

Output interface:

• SDRC® I-DEAS Universal File;

• MSC.Nastran punch file;

• MSC.Nastran OUTPUT2 file;

• FEMView results file;

• ® .fil file;

• radiation of sound waves by vibrating structures; • User-programmable format.

• scattering of sound waves by rigid or flexible structures;

• absorption of sound waves by locally or non-locally reacting materials;

• transfer matrix prediction of intake and exhaust components;

• sound transmission through simple or complex (composite) partitions;

• dynamics of damped sandwich structures;

• analysis of enclosed sound fields;

• extraction of eigenmodes;

• transient and harmonic schemes;

• output of element-level or model-level matrices for integration in MSC.Nastran™. REQUIREMENTS Enclosed sound field • HP UX 10.20, UX 11 or higher Locally or non-locally reacting trim can be accounted for as • SGI IRIX 6.5 or higher well as bulk-reacting elements like seats. Thanks to FFT’s • IBM AIX 4.3 or higher exclusive Krylov solver, unprecedented performance can be achieved for these applications. • SUN Solaris 5.7 or higer • glibc2 Insulation • Windows 95, Windows 98, Windows NT 4.0, Windows 2000

MSC.Actran can calculate the sound transmission through simple or composite partitions like screens, layered wind- shields, single or double glazing, roofliners, fire-walls, and cockpit or fuselage sections. Poro-elastic foams, thin air layers, viscoelastic films, plates and shells, and rubber layers are all easily and accurately modelled. MSC.Actran also handles sandwich structures with viscous effects in thin air layers and porous materials. MSC.Actran combines all features found in other computational acoustics software programs but offers a wealth of unique features, for instance: • Propagation of sound waves in a non-uniformly moving fluid (applications to turbomachinery design and pass-by noise simulation); • Coupling of the FE solution to analytical components (infinite duct); • Implicit modelling of anechoic and reverberant chambers; • Acoustic transmission through or acoustic absorption by composite sandwich structures; • Excitation of the structure by real-life excitations: diffuse sound field, turbulent boundary layer.

To find your local MSC.Software office or to learn more about our company and our products, please contact: Customer Care Center: Corporate: Europe: 1 800 642.7437 ext. 2500 (U.S. only) MSC.Software Corporation MSC.Software GmbH 1 978 453.5310 ext. 2500 (International) 2 MacArthur Place Am Moosfeld 13 [email protected] Santa Ana, California 92707 USA 81829 Munich, Germany Worldwide Web - www.mscsoftware.com Tel: 1 714 540.8900 Tel 49 89 43 19 87 0 On-line Purchases - www.engineering-e.com Fax: 1 714 784.4056 Fax: 49 89 43 61 71 6

MSC, MSC., the MSC[x]Software logo, Simulating Reality, and the names of the MSC.Software products and services referenced herein are trademarks or registered trademarks of the MSC.Software Corporation in the United States and/or other countries. NASTRAN is a registered trademark of NASA. SDRC is a registered trademark. I–DEAS is a registered trademark of Structural Dynamics Research Corporation. Actran is a trademark of Free Field Technologies. ABAQUS is a registered trademark of ABAQUS Inc. All other brand names, product names or trademarks belong to their respective owners. © 2003 MSC.Software Corporation. All rights reserved. ACT*3-03*Z*Z*Z*LT*DAT