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Modeling Linear Motors or Generators in COMSOL Multiphysics
We demonstrate how to customize a linear periodic boundary condition to model linear motors and generators in COMSOL Multiphysics®, with an example of a tubular generator used for wave energy.
Finding a Structure’s Best Design with Topology Optimization
Think about the first architects who designed a bridge above water. The design process likely included several trials and subsequent failures before they could safely allow people to cross the river. COMSOL Multiphysics and the Optimization Module would have helped make this process much simpler, if they had computers at the time, of course. Before we start to discuss building and optimizing bridges, let’s first identify the best design for a simple beam with the help of topology optimization.
Analyzing Mutual Inductance in Different Coil Arrangements
Mutual inductance measures the amount of change required for a current flowing through one circuit to create a current in a nearby circuit. Simulation can be used to compute mutual inductance.
How to Model Magnetic Bearings in COMSOL Multiphysics®
Get an in-depth introduction to the different types of magnetic bearings and then learn how to compute their magnetic force, torque, magnetic stiffness, and more.
Modeling Linear Elastic Materials – How Difficult Can It Be?
Get an intro to the theory and application of the linear elastic material model, isotropy/anisotropy, allowable values for material data, incompressibility, and geometric nonlinearity.
Modeling Metallic Objects in Wave Electromagnetics Problems
What is a metal, anyway? These materials are highly conductive and very good at reflecting incident electromagnetic waves, including light, microwaves, and radio waves.
How to Create a Simulation App: Horn Antenna Demo
Get a comprehensive overview of what a simulation app is. We use the Corrugated Circular Horn Antenna Simulator demo app to demonstrate some of apps’ many benefits.
How to Model Rotating Machinery in 3D
There are many different types of electrical machines, but rotating machines like generators and motors play a major role in our modern industrial society. Learn how to model these systems in 3D.
Modeling Laser-Material Interactions with the Beer-Lambert Law
Did you know that you can use the Beer–Lambert law to model laser–material interactions in COMSOL Multiphysics®? Learn how here.
Studying the Airflow Over a Car Using an Ahmed Body
The Ahmed body is a benchmark model widely used in the automotive industry for validating simulation tools. We discuss simulating airflow over an Ahmed body to optimize automotive aerodynamics.
Simulating the Insertion of a Snap Hook
Snap hooks, a type of fastener that involves the insertion of a hook into a slot, are found in the automotive industry. Simulation can be used to analyze their insertion and removal.
Modeling Current Distributions in a Molten Salt Electro-Refiner
A guest blogger from SIMTEC discusses how he uses simulation to analyze current distributions in a molten salt electrorefiner. Get details here >>
Evaluating the Instability of a Space Arc Frame
Picture the Louvre Pyramid in France: This is a real-world example of a space arc frame. Simulation can be used to evaluate instability in this type of structure.
Using Degeneracy Breaking to Design a MEMS Biosensor
Researchers from Newcastle University in the U.K. used simulation to investigate the effects of material and geometric symmetry breaking in a degenerate mode sensor. Get the full story >>
How to Perform a 3D Analysis of a Semiconductor Device
Open for a comprehensive introduction to performing 3D analyses of semiconductor devices in COMSOL Multiphysics®. We demonstrate with a bipolar transistor example.
Modeling a Surface Micromachined Accelerometer
There are plenty of MEMS manufacturing techniques, but surface micromachining is preferred because it can merge electronic components and freely moving mechanical parts onto one substrate.
Membrane Interface Improvements in Version 5.0
As of version 5.0 of COMSOL Multiphysics®, the Membrane interface includes a restructured menu, new feature nodes, improvements to the Linear Elastic Material model, and more.
Modeling Ray Propagation in a Newtonian Telescope System
Ray optics trivia: The Newtonian telescope, recognized as the earliest operating reflecting telescope, was developed in 1668. Today, simulation can be used to trace rays through this device.
Hydrocooling Analysis for Fresh Produce Safety
During the hydrocooling process for tomatoes, bacteria can seep through and contaminate the food, making it unsafe to ingest. Researchers from Cornell University used simulation to investigate.
Coupling Structural Mechanics Interfaces
The Structural Mechanics Module consists of specialized interfaces: Solid Mechanics; Shell, Plate, and Membrane for modeling thin structures; and Beam and Truss for modeling slender structures.
Yield Surfaces and Plastic Flow Rules in Geomechanics
Have you noticed that offshore structures are being constructed in deeper and deeper waters? See how geotechnical engineers are using numerical simulations to cope with this trend.
Piezoelectric Materials: Understanding the Standards
Get a comprehensive overview of the multiple standards used to describe piezoelectric materials in literature. The post particularly focuses on quartz but the standards can apply to any material.
Video Tutorial: Introduction to Modeling Structural Mechanics
Learn the fundamentals of simulating structural mechanics problems in the COMSOL® software: Get a quick overview in this blog post, with an embedded video tutorial included.
2D Axisymmetric Model of a Conical Horn Antenna
Did you know that you can save time setting up your electromagnetics models by taking advantage of axisymmetry? We discuss the benefits of this approach using a conical horn antenna example.