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Voyez comment la modélisation et la simulation sont utilisées par les industries La modélisation et la simulation multiphysiques pilotent l'innovation dans tous les grands secteurs d'activité et dans le monde universitaire — comme en témoignent les nombreuses utilisations présentées dans des articles et des posters techniques présentés par des ingénieurs, chercheurs et scientifiques à la Conférence COMSOL chaque année. Inspirez-vous des récents proceedings réunis ci-dessous, ou, pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt, utilisez la recherche rapide.

Consultez les proceedings de la Conference COMSOL 2024

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Boston 2025

Terme recherché:

transducer

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 ... En savoir plus

Simulating Frequency Nonlinearities in Quartz Resonators at High Temperature and Pressure

A. Beerwinkle[1], R. Singh[1], and G. Kirikera[2]
[1]Mechanics of Advanced Materials Laboratory, School of Mechanical and Aerospace Engineering, Oklahoma State University, Tulsa, OK
[2]Geophysical Research Company, LLC, (GRC) Tulsa, OK

A three-dimensional finite element model, based on the linear field equations for superimposed small vibrations onto nonlinear thermoelastic stressed media given by Lee and Yong, was developed. This method involves solving the thermal stress and piezoelectric model with geometric and ... En savoir plus

Modeling of Ultrasonic Transducers and Ultrasonic Wave Propagation for Commercial Applications Using Finite Elements with Experimental Visualization of Waves for Validation

D. R. Andrews[1]
[1]Cambridge Ultrasonics, Over, UK

Finite element (FE) modelling of ultrasonic propagation using COMSOL Multiphysics® simulations can be used to create images of waves. Unfortunately, in time-stepping solutions, it is possible for numerical instabilities to grow large and dominate the solution adversely. Any design of ... En savoir plus

Optimization of the acoustic pressure distribution inside a freeze drying chamber

R. Andrés García[1], E. Riera[2]
[1]Grupo de Sistemas y Tecnologías Ultrasónicas (GSTU), ITEFI, CSIC, Spain
[2]Grupo de Sistemas y Tecnologías Ultrasónicas (GSTU), ITEFI, CSIC; Madrid, España, Spain

IntroductionThe application of power ultrasounds in food dehydration processes have shown a good performance in terms of efficiency, energy reduction and quality of the final product, allowing also a reduction in the convective drying kinetics, and at lower temperatures than conventional ... En savoir plus

Modeling and Simulation of Dual Application Capacitive MEMS Sensor

A. Ravi[1], R. Krishna[1], J. Christen[1]
[1]Arizona State University, Tempe, AZ, USA

Capacitive MEMS sensors offer high spatial resolution, sensitivity and good frequency response. In this paper, we present a circular membrane capacitive MEMS device that finds use both as capacitive micromachined ultrasonic transducer (CMUT) and pressure sensor. The MEMS device is first ... En savoir plus

Extraction of COM Parameters and Quality Factor of One Port SAW Resonator Using FEM Based Simulation

A. K. Namdeo[1], H. B. Nemade[1]
[1]Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati, Assam, India

The paper presents a method of extraction of coupling of modes (COM) parameters for a one port surface acoustic wave (SAW) resonator from the results of finite element analysis in COMSOL Multiphysics®. The COM parameters calculated are electromechanical coupling coefficient, reflection ... En savoir plus

Multiphysics Simulation of a High Frequency Acoustic Microscope Lens

O. Tommiska [1], J. Mäkinen [1], J. Hyvönen [1], A. Meriläinen [1], A. Salmi [1], E. Hæggström [1],
[1] Department of Physics, Division of Materials Physics, University of Helsinki, Helsinki, Finland

High frequency ultrasound (100-1000 MHz) has been used in microscopy since the 1970s. The main imaging component, the acoustic lens, is commercially available. The resolution, working distance, and focal length depend on the structure of a lens, which is unique for each produced lens. ... En savoir plus

Frequency Response Modeling of Inductive Position Sensor with Finite Element Tools

A. K. Palit[1]
[1]LE GmbH, Espelkamp, Germany

Position sensors have several applications in the automotive sector. Some of the common examples include automatic gear shifter module, seat position adjustment and accelerator-pedal position modules etc. Because of extreme weather condition, such as dust, humidity and moisture and ... En savoir plus

Effect of Duty Cycle Variation on Acoustic Pressure Field Simulation in an Ultrasound Bioreactor

A. Rahimi [1], J. Crapps [1], N. Case [1]
[1] Biomedical Engineering, Saint Louis University, Saint Louis, MO, USA

Daily application of a low intensity pulsed ultrasound (LIPUS) regimen has been shown to have positive effects on bone fracture healing. Although LIPUS treatment can induce cellular responses supporting bone repair, the underlying mechanisms are not well understood. Further in vitro ... En savoir plus

Calculation of the Helmholtz Resonator Using COMSOL® in an Acoustic Lecture

Y. Koike [1], M. Hashiguchi [2], D. Mi [2],
[1] Department of Electronic Engineering, College of Engineering, Shibaura Institute of Technology, Koto, Tokyo, Japan
[2] Engineer Division 1, Keisoku Engineering System Co., Ltd., Chiyoda-ku, Tokyo, Japan

In the field of electronic, electro-acoustic apparatus is one of the important applications. There is an acoustic class in the department of electronic engineering, Shibaura Institute of Technology. The class is “Acoustic systems” which opens in 2nd semester of 3rd year. To foster the ... En savoir plus

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