LMS Virtual.Lab Advanced Numerical Acoustics is a complete and advanced solution for accurately simulating the acoustic performance of systems involving complex physical phenomena. It allows engineers to simulate complex systems with optimal accuracy and speed, including coupled simulations for acoustics and structure.
The solution package includes the BEM (Boundary Element Method), FEM (Finite Element Method), and IFEM (Infinite Element Method) technologies. This allows the solution to take particular effects into account, including:
- Acoustic volume-absorbing materials, such as in muffler systems
- Temperature variations, such as in exhaust systems
- Time-transient phenomena, when sound or noise is not harmonic
- Infinite Elements, allowing simulation of acoustic radiation when BEM models are not appropriate, such as for tire bump events
- Airflow effects in ducts.
For large systems and for higher frequencies, acoustic models can become enormous, and calculation time becomes a critical issue. LMS Virtual.Lab Advanced Numerical Acoustics addresses this with very fast iterative solvers to reduce FEM simulations from weeks to a single day. Padé expansion solvers reduce the calculation time for large BEM models with a broad frequency band of analysis from several days to just a couple of hours. Multiprocessing and ATV-based solvers are optionally available to further accelerate acoustic simulation processes by a factor up to 100. All available techniques support the acoustic engineer in getting accurate simulation results in time to influence important design decisions. Powerful visual animations help the user to inspect structural vibrations and acoustic patterns - and to investigate possible changes that optimize the acoustic performance.
The solution runs transparently with other CAE codes and includes seamless links to ABAQUS, ANSYS, CATIA CAE, I-DEAS, Nastran, and PERMAS.
