Actran
Swift and intuitive acoustic prediction tools to deliver high-performing products
Actran enables you to push the boundaries of acoustic design, by reducing product development time and gathering increased insights into how to improve product performance. Its advanced simulation tools make predicting acoustic issues a seamless task.
Benefits And Features
A complete acoustic simulation solution for tackling any acoustic or noise problem
Compressed Reduced Impedance Matrices (CRIM) for Nastran PEM and Actran for trimmed body analyses
The newest version introduces a new compressed way to store reduced impedance matrices (RIM) for 3D acoustic trim analysis. Drastically reduce the size of those matrices and reduce computational time due to fewer I/O operations. Fine-tune the accuracy with the CRIM_TOLERANCE keyword. A higher tolerance will select more modes, leading to more accuracy but less compression.
Automatic conversion of 3D meshed trims into 1D analytical trims
3D meshed trims can be easily converted to 1D analytical trims. Reach higher frequencies at a lower cost in terms of runtime and memory consumption. Quickly access trim performance indicators like transmission loss. Reuse the existing 3D trims for building up a SEA model (only supporting 1D trim definitions).
Enhanced vibration mapping method based on experimental data
Easily set up an acoustic radiation model starting from experimental vibration data (surface acceleration, velocities or displacements). Avoid complex structural dynamics modelling and rely on experimental data to assess the noise emission. Conduct a structure-borne transfer path analysis with a hybrid approach mixing experimental and computational results.
Training and Resources
Downloads are only available on the desktop version. Please access our site from a desktop to download.
Frequently Asked Questions
How to perform a map difference in Actran VI
Following article explains how to perform the difference between two maps in Actran VI on a demo case. The demo case is the turbomachine inlet from Actran TM training material workshop. Difference of acoustic pressure radiated by the nacelle inlet (in no flow) between Hardwall and Softwall configurations is performed and visualized. NFF database with the difference of acoustic pressure is finally exported.
How to define reference spectrum for Diffuse Sound Field excitation in Actran
Following article explains how to:
- Set-up the reference spectrum of a DSF with a value per discrete frequency or a value per (third-)octave band
- Check that reference spectrum specified by the user has been accurately applied
How to include Nastran model into Actran model
Following article aims at:
- Providing guidelines for
+ either the conversion of Nastran model into an Actran model
+ or the use of Nastran modal basis into Actran
- Validating on a simple model:
+ Conversion of Nastran structure model into Actran structure model
+ Use of Nastran structure modal basis in Actran
How to compute incident power for structure TL under distributed pressure excitation
Incident power is commonly assessed to compute structure TL under Diffuse Sound Field excitation. Following article explains how to compute an equivalent incident power when structure is loaded by a deterministic excitation such a distributed pressure.
How to define periodic boundary conditions
Periodic boundary conditions enable to model an angular sector instead of a full 3D model. This leads to lower computation time and lower consumed RAM. Following article explains how to define periodic boundary condition in Actran. It also presents a demo case validating the feature by comparing results on an angular sector and results on a full 3D model.
You might be interested in...
Related products
© 2025 Hexagon AB and/or its subsidiaries