In this presentation, we will discuss how to build a fully coupled, MEMS-acoustic interaction model of electrostatic headphones in COMSOL Multiphysics®. The dynamics of an electrostatic speaker is a true multiphysics phenomenon that involves the nonlinear relationship of structural mechanics, electrostatics, electrical conduction, and acoustics. Many interrelated design elements affect the device’s frequency response and the user’s listening experience.
You will also learn about how Dr. Brett Marmo from Xi Engineering Consultants used simulation apps and COMSOL Server™ to create a more streamlined and interactive design process. Marmo will demonstrate how he designed a graphic user interface based on an electrostatic headphone model using the Application Builder in COMSOL Multiphysics®, which enabled his clients without modeling experience to virtually test proposed design modifications. You will also hear about how clients were able to access the simulation app using COMSOL Server™ installed on a virtual private cloud (VPC) and test the size and thickness of device components, their elastic and electric properties, and the thickness and aperture size of the wire mesh.
You can ask questions throughout the presentation or at the end during the Q&A session.
A MEMS-acoustic interaction simulation of an electrostatic headphone. Simulation results show the sound pressure level (SPL) and total displacement.
Brett Marmo, Technical Director, Xi Engineering Consultants
Dr. Brett Marmo received his PhD from the University of Melbourne for his work studying glacial movement in Antarctica. He has numerically modeled the behavior of a wide range of solids, including metamorphic processes in rocks and the sliding friction on ice for winter Olympic sports. He’s also published over 20 articles in peer-reviewed journals and won awards from the International Sports Engineering Association. Dr. Marmo is currently the technical director at Xi Engineering Consultants. His focus is modeling the noise and vibration associated with the design and assessment of renewable energy devices, consumer goods, marine engineering, and residential buildings.
Sarah Fields, Technical Marketing Engineer, COMSOL
Sarah Fields is a technical marketing engineer at COMSOL with a focus on writing and producing articles and presentations about COMSOL Multiphysics® and COMSOL Server™. She holds an MS in chemical engineering from the University of Rhode Island.