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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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Finite Element Simulation of a Surface Acoustic Wave Driven Linear Motor

B. Behera [1], H. B. Nemade [1], S. Trivedi [1],
[1] Indian Institute of Technology Guwahati, Guwahati, Assam, India

The paper presents finite element simulation of a surface acoustic wave (SAW) linear motor. The function of SAW linear motor depends on the principle of friction drive provided by SAW propagating on a piezoelectric substrate. The SAW motor comprises of a slider driven by Rayleigh wave ... En savoir plus

Design & Simulation of Various Shapes of Cantilever Beam for Piezoelectric Power Generator

P. Graak [1], S. Kaur [1], A. Gupta [1], P. Chhabra [1], D. Kumar [1], A. Shetty [2]
[1] Kurukshetra University, Kurukshetra, Haryana, India
[2] Indian Institute of Science, Bengaluru, Karnataka, India

The ambient vibrations can be of great promise for harvesting energy initially at small scale to use for micro and nano scale devices. Such vibrations converted to electrical energy by piezoelectric transducer due to their major significance. Various research journals have introduced the ... En savoir plus

Stress Field Simulation for Quantitative Ultrasound Elasticity Imaging

L. Yuan[1] and P.C. Pedersen[1]
[1]Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA

Finite element models using COMSOL Multiphysics and MATLAB were developed to solve the problem of stress distribution interior homogeneous, isotropic, incompressible elastic solid material under known vertical external compression with a rectangular contact surface. Moreover, comparison ... En savoir plus

Extraction of Electrical Equivalent Circuit 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, Guwahati, Assam, India

The paper presents a method of extraction of electrical equivalent circuit of a one port surface acoustic wave (SAW) resonator from the results of simulation based on finite element method (FEM) using COMSOL Multiphysics software. A one port SAW resonator consists of large number of ... En savoir plus

Study of a Loudspeaker in a Vehicle Door

M. K. Bogdanski [1], F. Malbos [2], M. Strauss [1],
[1] Harman Becker Automotive Systems, VPDT, Straubing, Germany
[2] Harman France, VPDT, Paris, France

COMSOL Multiphysics® was used to evaluate the performance of a woofer coupled to an automotive door. Two uses cases were considered: rigid and non-rigid door structures. Using the Structural Mechanics Module, the speaker membrane displacement was computed for both cases from 20Hz to 500 ... En savoir plus

Electrode design for efficient excitation of vibrational modes in an AlN based PMUT

Bart Weekers¹, M. Billen², D. Tabruyn³, R. Haouari², P. Gijsenbergh², V. Rochus², X. Rottenberg², L. Lagae³
¹Imec / KU Leuven, Leuven, Belgium
²Imec, Leuven, Belgium
³Imec & Department of Physics and Astronomy, KU Leuven, Leuven, Belgium

Piezoelectric micromachined ultrasound transducers (PMUTs) are gaining increasing interest as miniaturized, low-power devices which can be easily integrated with electronic systems for applications such as medical imaging, therapeutic ultrasound, and particle manipulation. This work ... En savoir plus

Long Range Ultrasonic Guided Waves for Pipelines Inspection

Á. Angulo[1], Dr. S. Soua[1]
[1]TWI Ltd, Cambridge, UK

The evaluation of defect size and nature are two most controversial topics in ultrasonic flaw detection. The operation consists of an application of ultrasonic waves to pipes in order to detect metal loss and other defects in the pipe wall due to corrosion and other degradation ... En savoir plus

Modeling the Directional Response of Slim Height Channel Speakers

L. Tipparaju¹
¹CEG Audio Technology - Dolby Laboratories, San Francisco, California, USA

Modern home audio products are starting to feature dedicated upward firing height channel speakers, which are a combination of unique physical speaker design and special signal processing, to reproduce audio as if the sound source is located in the ceiling. Due to slim form factor design ... En savoir plus

Heat Drain Device on Ultrasound Imaging Probe

G. Vigna[1], L. Spicci[1]
[1]Esaote SPA, Florence, Italy

Self-heating is a problem to consider for Ultrasound Imaging probes. Since the probe is in contact with the skin, it’s necessary to find a solution to lower the front face temperature in order to avoid patient discomfort, even at the most demanding operating condition. One solution ... En savoir plus

Reducing Loudspeaker Systems Panel Vibrations

D. Cinanni [1],
[1] ASK Industries Spa, subject to direction and coordination of JVCKENWOOD Corporation, Italy

One of the main design questions in loudspeaker enclosures concern vibrations reduction. An ideal cabinet would be infinitely rigid, so a section of an engineer work is focused on this goal. Solutions depend by loudspeaker system audio field: Line Arrays, Automotive environments or hi ... En savoir plus

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