Join us for a full day of acoustics modeling news and discussions. You will hear about how modeling is being used by experienced leaders in your industry. You will also gain insight into the latest acoustics research in academia. Upcoming projects, challenges, and focuses within acoustics simulation will be at the center of discussion.
COMSOL will present on acoustics modeling with COMSOL Multiphysics®. There will be demo and support stations where you can discuss your modeling needs with COMSOL technical staff.
The final program will be announced within the next few weeks. Register for free today.
Vibroacoustic Simulation and Optimization of Hearing Aids
Hearing aids are complex vibroacoustic systems and inherently require the use of multiphysics to be modeled and simulated. The hearing aid includes a receiver (a microspeaker) as well as one or several microphones. Both acoustic and vibrational feedback paths exist between the two. Via the use of simulations, engineers can better track the effects coming from the different forces, torques, and acoustic pressures, and an optimized design can be found for a given hearing aid situation. This will be demonstrated, as well as some emerging techniques in the field of shape and topology optimization — all kept within the framework of COMSOL Multiphysics® exclusively.
Diffuse Sound Field
Creating a diffuse sound field in reverberation rooms entails a number of prerequisites, such as multiple sources, careful setup of both equipment and deflecting panels, and subsequently some postprocessing. An attempt to do the same in effectively one go using finite element modeling is presented, and simulated results are compared to real measured values.
Get an overview of the capabilities for modeling the propagation of acoustic waves in coupled fluid and solid media in the COMSOL® software. The applications include nondestructive testing (NDT) units, flowmeters, and piezoelectric transducers.
High-fidelity numerical simulations are only achieved if material properties are well described. In acoustics, knowing the damping properties of fluids and structures can be challenging. For porous materials, the challenge may be even higher, as data provided by manufacturers is often sparse. Using COMSOL Multiphysics®, it is possible to estimate your material parameters from experimental measurements through optimization. Moreover, the properties of any gas mixture, like moist air, can be computed from first principles with thermodynamics.
Simulation of Sound Field Control Technologies in Automotive Listening Spaces
The future of automotive audio systems is expected to introduce profound changes in both the user's perception of and expectations to transportation, as well as in the physical boundaries of the listening space. To address these new conditions, the investigation of emerging technologies is aided by the mathematical modeling of physics. In this presentation, examples are shown of different aspects of the research approach involving acoustical simulations that come before the technology development process.
The virtual multiphysics development, design, and optimization of loudspeakers has reached a very mature state within the last five years. You will learn about the capabilities and latest modeling approaches available in COMSOL Multiphysics®, which will allow you to have a full virtual testing environment.
Acoustic propagation in structures with submillimeter features is the norm in consumer products like mobile devices, protective grills of loudspeakers, hearing aids, and perforates used in muffler systems. Common to all is that the inclusion of thermoviscous losses is essential to correctly predict the response. You will be introduced to the modeling techniques used to capture these effects in simulations.
Sensitivity analysis can be used to identify important parameters that can then be changed manually or automatically using optimization. Optimization of these parameters enhances the performance of your product. In the case of manufacturing uncertainties, it is possible to compute several objectives and optimize for the worst of them. You will see several examples of how optimization can be set up in the COMSOL® user interface.
Simulations are heavily used in many application areas in the automotive industry, ranging from cabin acoustics and muffler design to the vibrational analysis of components in an NVH setting. You will learn how you can use acoustics simulations in these various application areas. The focus will be on multiphysics phenomena like acoustic-structure interaction (ASI) and convected acoustics.