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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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Simulation of the Destruction Effects in CMOS-Devices caused by Impact of Fast Transient Electromagnetic Pulses

M. Rohe, S. Korte, and M. Koch
Institute for the Basics of Electrical Engineering and Measurement Science, Leibniz Universität Hannover, Germany

In this paper will be presented how an electronic system and its components will respond in case of an impact of an external electromagnetic pulse (EMP). In the first instance the coupling process of transient electromagnetic pulses into electronic systems will be shown. Out of that the ... En savoir plus

Simulation of the Acoustic Environment for the Manufacture of Graded Porosity Materials by Sonication

C. Torres-Sanchez, and J. R. Corney
University of Strathclyde, United Kingdom

Many materials require functionally graded cellular microstructures whose porosity is engineered to meet specific requirements of diverse applications. It has been shown in previous work that the bubble growth rate of a polymeric foam can be influenced by the surrounding acoustic ... En savoir plus

Modal Analysis of Rotating Machines

C. Frankrone [1], L. Fromme [1],
[1] Department of Engineering Sciences and Mathematics, Bielefeld University of Applied Sciences, Bielefeld, Germany

Machines with rotating components are prone to vibrations because an imbalance of the rotor would always act as a harmonic excitation force to the machine. Thus oscillations close to the natural frequencies are tried to pass through fast in the run-up and cast-down or even completely ... En savoir plus

Simple Disk Piezo Transformer Based Oscillator

J. P. Sandoz[1], J. M. Kissling[1]
[1]Institute of Applied Microtechnology, La Chaux-de-Fonds, HE‐ARC, Switzerland

In this contribution we present a COMSOL Multiphysics® example of a disk piezoelectric ceramic transformer (D-PT) coupled with a bipolar NPN transistor to form an auto-oscillator. The comparison between the simulations and the measurements made on our prototype are found to be in good ... En savoir plus

Atmospheric Icing of Transmission Line Conductor Bundles

T. Wagner[1], and U. Peil[2]
[1]International Graduate School of Risk Management of Natural and Civilization Hazards on Buildings and Infrastructure, Braunschweig, Germany
[2]Institute of Steel Structures, Technical University Braunschweig, Braunschweig, Germany

Hazardous for the transmission lines is not only the static ice load, but also the aerodynamic instability of iced cables. It can lead to large amplitude oscillations at low frequencies. Also, twisting due to asymmetrical iced cables may increase the fatigue rate. In extreme events, ... En savoir plus

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

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

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

Modeling Directional Two Arm Archimedes Spiral Coils in the RF Electromagnet Range

A. Kalinowski, and J. Maguire
Naval Undersea Warfare Center/Div. Npt. , Newport, RI, USA

The paper addresses a class of problems for modeling and consequently simulating the electromagnetic field radiation pattern from a two arm Archimedes spiral coil. The performance of particular interest is knowledge of the radiated magnetic field H and electric field E in the ... En savoir plus

Modelling of Seismoelectric Effects

B. Kröger[1], U. Yaramanci[2], and A. Kemna[1]
[1]1 University of Bonn
[2]GGA Hannover

We present the results of full-waveform time-dependent finite-element modelling of coupled seismoelectromagnetic wave propagation in fluid-saturated porous media. To describe the seismoelectric response of the system a new set of equations is developed which couple the poroelasticity ... En savoir plus

Modeling and Simulation of MR Dampers Using COMSOL Multiphysics® Software

Y. M. Khedkar[1], S. B. Joshi[2], P. M. Pawar[1], B. P. Ronge[1]
[1]SVERI's College of Engineering, Pandharpur, Maharashtra, India
[2]Brahmdevdada Mane Polytechnic, Solapur, Maharashtra, India

Classical hydraulic dampers are flexible devices that are used to attach a component to a mounting base. Vibration amplitude reduction can be achieved by improving the old technique of suspension by bringing in application of Magnetorheological or Electrorheological fluid in it. Due to ... En savoir plus

Development of a Package for a Triaxial High-G Accelerometer Optimized for High Signal Fidelity

R. Langkemper [1], R. Külls [1], J. Wilde [2], S. Nau [1], S. Schopferer [1],
[1] Fraunhofer-Institut für Kurzzeitdynamik, Ernst-Mach-Institut, EMI, Freiburg, Germany
[2] Albert-Ludwigs-Universität Freiburg, Institut für Mikrosystemtechnik, Freiburg, Germany

Acceleration is an important quantity to be measured in high-speed dynamics. A new piezoresistive sensor for the measurement of high-amplitude, short-duration transient accelerations of up to 100,000 g has been developed at the Fraunhofer EMI. Its figure of merit (sensitivity x resonance ... En savoir plus

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