See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.


View the COMSOL Conference 2023 Collection

Acoustics and Vibrationsx

Investigation on Quiet Zones Created by Remote Impedance Control

T. Laurence [1], R. Boulandet [1], H. Lissek [1],
[1] LTS2 - Acoustics Group, EPFL, Switzerland

Quiet zones and other sound zones have been a strong topic of research for some time, due to the interest of creating separate sound environments in a same room, in a large open-space office for example. A number of solutions have been proposed over the last years. This paper further ... Read More

Modeling the Dynamic Viscous and Thermal Dissipation Mechanisms in a Fibrous Porous Material

B.P. Semeniuk [1], P. Göransson [1],
[1] KTH Royal Institute of Technology, Marcus Wallenberg Laboratory for Sound and Vibration Research, Stockholm, Sweden

The main mechanisms of acoustic attenuation in a bundle of fibres typical of lightweight fibrous porous materials are the dynamic viscous drag forces on the surface of the fibres, and the thermal heat transfer between the solid fibres and the surrounding fluid. Microstructure models ... Read More

Simulation of the Electrical Properties of Conductive ITO Thin Films by Finite Element Analysis

R. A. Gerhardt [1], N. Xia [1], Y. Jin [1],
[1] Georgia Institute of Technology, Atlanta, GA, USA

Finite element analysis (FEA) can be used to study the electrical properties of conductive ITO thin films. Previous studies have been done on insulating thin films deposited on conductive substrates [1,2]. It was found that changes of electrode size and film thicknesses can cause huge ... Read More

Seat Motor Design Optimization

S. Qi [1], H. Cheng [1], L. Yang [1]
[1] Dare Auto, Inc., Plymouth, MI, USA

In this work, the production intent design of a motor with controller inside a car seat for head restraint function is analyzed and optimized using the COMSOL Multiphysics® software and the Application Builder. Parameter based multiscale FEA models were developed by using external CAD ... Read More

On The Directional Response of Multi-Driver Column Loudspeaker Configurations Using FEA and BEM

R. Balistreri [1],
[1] Klipsch Group, Inc, Indianapolis, IN, USA

Column Loudspeakers employ multiple drivers to get close to a radiating line source. A line source gives several acoustic advantages versus a point source, especially in highly reverberant environments. This property particularly has made column loudspeakers the preferred solution in ... Read More

Modeling, Simulation, and Optimization of Piezoelectric Bimorph Transducer for Broadband Vibration Energy Harvesting in Two-piece Trapezoidal Approach

N. Chen [1], V. Bedekar [1],
[1] Middle Tennessee State University, Murfreesboro, TN, USA

The objective of the research is to design a broadband energy harvester device through the two-piece non-linear trapezoidal geometry approach. The performance of two piezoelectric PZT-PZN polycrystalline ceramic composition samples are simulated in the COMSOL Multiphysics® software, and ... Read More

Analysis of Mechanical Sensitivity of MEMS Pressure Diaphragm for Contact Formation

S. Shubham [1], M. Nawaz [1],
[1] Knowles Electronics, Itasca, IL, USA

MEMS Pressure sensors work on the principle of mechanical bending of thin diaphragm under applied load over diaphragm area. The sensitivity of diaphragm is crucial to efficiency of the sensor. It is defined as the increase in deflection of diaphragm as a result of increase in pressure ... Read More

Vibration and Noise Analysis of the Feather River Bridge

L. A. De Jesús Díaz [1], R. Daniel Costley [1], H. Díaz-Alvarez [1],
[1] Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, Vicksburg, MS, USA

The U.S. Army Engineer Research and Development Center (ERDC) is conducting research using infrasound arrays to detect and monitor structures as well as for dynamic structural characterization of large infrastructure. Previous studies have determined that structures radiate acoustic ... Read More

Resonance Frequency of a Helmholtz Resonator

R. Hill [1], M. Mendieta [1], P. Bruce [1], E. Stokes [1]
[1] Electrical and Computer Engineering Department, University of North Carolina - Charlotte, Charlotte, NC, USA

Acoustic metamaterials commonly use Helmholtz resonators to attenuate an acoustic signal at the resonator’s resonance frequency. The resonance frequency is only dependent on the geometry, which is shown by representing the Helmholtz resonator as a mass spring system using the lumped ... Read More

Load Noise Calculation of a Three-Phase Power Transformer

C. S. Lin [1],
[1] Pitotech. Co Ltd., Changhua City, Changhua, Taiwan

Vibrations and noise of high power transformers have attracted considerable experimental and theoretical interests over last few years [1, 2]. For such transformers operating under high voltage (~ 100 kV) and power (~ 100 MVA), noise generated is significantly attributed to load noise ... Read More