A Galeria de Aplicações possui tutorias sobre o COMSOL Multiphysics® e aplicativos de demonstração pertinentes às áreas de elétrica, mecânica estrutural, acústica, escoamento e química. Você pode usar esses exemplos como um ponto de partida para o seu próprio trabalho de simulação baixando o modelo do tutorial ou o aplicativo e suas instruções. Use a função "Busca Rápida" para encontrar modelos da sua área de interesse. Para baixar os arquivos MPH, faça o login, ou se cadastre, no COMSOL Access usando uma licença válida do COMSOL, para poder baixar os arquivos MPH. Note que muitos dos exemplos disponibilizados aqui também podem ser acessados através da Application Libraries que faz parte do software COMSOL Multiphysics® e está disponível a partir do menu File.

COMSOL-News-Magazine-2017
COMSOL-News-Magazine-2017-Special-edition-acoustics
COMSOL News Magazine 2017

Car Windshield Antenna Effect on a Cable Harness

Modern cars have rear-windshield FM antennas to play FM radio. The radiation emitted from an antenna induces an electric current on the outer surface of any cable harnesses in the car, which can have negative effects. This model uses the RF Module to compute the far-field radiation pattern of the antenna, by enclosing the car in perfectly matched layers separated by an air domain. The electric ...

Viscoelastic Structural Damper

Viscoelastic dampers are frequently used to protect tall structures against vibration. The Viscoelastic Structural Damper application can perform the time-domain and frequency-domain analyses for a typical viscoelastic damper. The purpose of the app is to compute and analyze the important parameters of the damper such as the hysteresis loop and loss and storage moduli for a prescribed material ...

Rotordynamic Analyses of a Crankshaft

See how to perform a vibration analysis of the crankshaft of a 3-cylinder reciprocating engine in this tutorial model. Due to the eccentricity of the crank-pin and balance masses on the crankshaft, it undergoes self-excited vibration under rotation. The crankshaft is modeled using solid elements to accurately capture the effects of the eccentricity of the crank-pin and balance masses. The ...

Elastoplastic Low-Cycle Fatigue Analysis of Cylinder with a Hole

A load carrying component of a structure is subjected to multi-axial cyclic loading during which localized yielding of the material occurs. In this model you perform a low cycle fatigue analysis of the part based on the Smith-Watson-Topper (SWT) model. Due to localized yielding, you can use two methods to obtain the stress and strain distributions for the fatigue evaluation. The first method ...

Double-Ridged Horn Antenna

A double-ridged horn antenna is popularly used in anechoic chambers to characterize an antenna under test (AUT), from S-band to Ku-band, due to its reliable performance in a wideband frequency range. This tutorial models a double-ridged horn antenna and computes the voltage standing wave ratio (VSWR), far-field radiation pattern, and antenna directivity. A lumped port is assigned on the ...

MEMS Pressure Sensor Drift Due to Hygroscopic Swelling

For their integration in microelectronic circuits, MEMS devices are bonded on printed circuit boards and connected with other devices. Then, the whole circuit is often covered with an epoxy mold compound (EMC) to protect the devices and their interconnects with the board. The epoxy polymers used for such applications are subject to moisture absorption and hygroscopic swelling, which can lead to ...

Time-to-Frequency Fast Fourier Transform of a Coaxial Low-Pass Filter

A very wide band coaxial low-pass filter is designed using a 2D axisymmetric model. To address the wide band frequency response with a fine frequency resolution, the model is built with a transient physics interface first. Then, S-parameters are calculated using a time-to-frequency Fourier transform. To achieve a low-pass frequency response, an air-filled coaxial cable is tuned with five ...

Quadrupole Lens

Just like optical lenses focus light, electric and magnetic lenses can focus beams of charged particles. Systems of magnetic quadrupole lenses find a common use in focusing both ion and particle beams in accelerators at nuclear and particle physics centers. This model shows the path of ions going through three consecutive magnetic quadrupole lenses. The model also takes fringing fields ...

Electric Shielding Comparison

The electric shielding boundary condition is meant to approximate a thin layer of highly conductive material that provides an additional current path tangential to a boundary. This example compares the electric shielding boundary condition to a full-fidelity model and discusses the range of applicability of this boundary condition.

Homopolar Generator 3D

A homopolar generator is composed of an electrically conductive rotating disc placed in a uniform magnetic field that is perpendicular to the plane of rotation. The motion of the conductor through the static magnetic field induces Lorentz currents in the disc. By connecting the outside rim of the disc to the center via a stationary conductor, significant current can be generated. The flow of ...