Tips & Tricks | Posted on June 11th, 2013 by Andrew Griesmer
A while back, I blogged about a new feature made available in COMSOL Multiphysics 4.3b, the ability to create 2D models from the cross sections of 3D geometries. We are so excited for this new feature that we decided to make a video showing you how easy it is to use.
Read more on: Video: 2D Models from Cross Sections of 3D Geometries
Mechanical | Posted on June 6th, 2013 by Andrew Griesmer
Continuing our structural mechanics tutorial blog series, we have created two more videos of different functionality existing in COMSOL’s Structural Mechanics Module. The first post in the series introduced you to the Structural Mechanics Module via a linear elastic analysis of a bracket, and the following post included two supplemental videos for adding Initial Strain and Thermal Stress to the this model. Next up we have two more “mini-tutorials” — this time outlining the Rigid Connector feature and the Linear Buckling study type.
Read more on: Structural Mechanics Tutorials: Rigid Connector and Linear Buckling
Mechanical | Posted on May 22nd, 2013 by Pawan Soami
Dynamic simulation of a double pendulum system can easily be performed using the Multibody Dynamics Module available in COMSOL Multiphysics. This module enables the mechanical simulations of assemblies of flexible and rigid bodies, often coupled with other phenomena such as from heat, electrical, and others.
Mechanical | Posted on April 19th, 2013 by Andrew Griesmer
I will always remember a Geotechnical Engineering class I took during the pursuit of my Civil Engineering degree. It contained both the high and low points for that academic semester; the lab portion was a lot of fun, learning about (read: playing with) the different soils and clays existing in the state of Georgia. The final project, on the other hand, tasked us with designing a retaining wall to match certain specifications — a tough and lengthy assignment. A retaining wall is used to hold back soil from a region you don’t want it to move to, such as a lower level of the ground. If excavating close to a retaining wall, you’re subjecting it to additional forces it was not originally designed for, and it may require subsequent support. How much easier it could have been had we only known about geomechanics simulation software.
Acoustics | Posted on April 12th, 2013 by Bethany Moatts
When given the choice, we’d all prefer our loudspeakers to project perfect sound; having a phone conversation with someone who sounds like a robot caught in a windstorm is less than ideal. The quality of the sound is, naturally, dependent on how well the speaker is designed, and COMSOL Multiphysics is the perfect tool to simulate and optimize loudspeaker designs because of its easy-to-use multiphysics nature. For a loudspeaker analysis to be accurate, you must be able to simulate from signal to sound with all the linking steps in between that determine how what you want to hear is transferred into what you actually will hear from a particular loudspeaker. Each step in the process will be interrelated, so it’s important to use this integrated multiphysics approach to capture each of these complex relationships. In the video at the bottom of this blog post, I will show you how our software can be used to perform a loudspeaker analysis.
Read more on: Calling All Audiophiles: Loudspeaker Analysis Video
Mechanical | Posted on April 4th, 2013 by Andrew Griesmer
Back in January, I presented a video tutorial introducing the Structural Mechanics Module here on the blog. The video described the steps necessary to perform a static linear analysis on a bracket geometry. Now, to help you better understand the extra functionalities that exist within COMSOL Multiphysics and the Structural Mechanics Module, we are also creating additional tutorial videos of this bracket. The first two “mini-tutorials” to accompany the static linear analysis video focus on adding initial strain and thermal stress, and you can watch them here.
Read more on: Structural Mechanics Tutorials: Adding Initial Strain and Thermal Stress
Multiphysics | Posted on March 6th, 2013 by Andrew Griesmer
You may be wondering “What is COMSOL Multiphysics?” In short, COMSOL Multiphysics is a comprehensive simulation software environment for a wide array of applications, but structured and user-friendly for all to use. The best way to answer the question of what our software can do is to show you. This is why we have created a video that gives you a brief overview of the capabilities you can possess with the software in your hands.
News | Posted on January 30th, 2013 by Fanny Littmarck
Students at Ohio State University can take a course on numerical simulations in biomedical engineering with Richard T. Hart. In the course, they will learn how to use computer modeling to solve biomedical engineering problems. Hart is now providing anyone who is interested in this application area with three video tutorials from the course via the Ohio State University iTunes U page.
Read more on: In Silico: Numerical Simulations in Biomedical Engineering
Electrical | Posted on January 29th, 2013 by Fanny Littmarck
One of the classic multiphysics couplings in engineering and science is joule heating, also called resistive heating or ohmic heating. Some joule heating examples include heating of conductors in electronics, fuses, electric heaters, and power lines. When a structure is heated by electric currents, the device can reach high temperatures and either structurally degenerate or even melt. The design challenge is to remove this heat as effectively as possible. COMSOL eases these challenges by providing a specialized multiphysics interface for joule heating, allowing for quick and easy definition of the phenomenon and even includes the ability to model convection for removing the heat.
Here, we’ve produced a video resource for you to see how you can effectively simulate joule heating using COMSOL Multiphysics. The 2-chapter video tutorial demonstrates how to model the joule heating of a fuse, seeking to answer the question: “Will it blow?”.
Mechanical | Posted on January 24th, 2013 by Andrew Griesmer
The Structural Mechanics Module has numerous capabilities, enough for a video containing all of them to last days. This video demonstrates one of the many mechanical capabilities of COMSOL Multiphysics, by outlining a Static Linear Analysis. The chosen physics interface for this problem is Solid Mechanics, one of 13 physics interfaces in the Structural Mechanics Module. The video shows step-by-step how to set up the model of a bracket with a standard workflow (i.e. import the geometry, create global parameters and variables, designate materials, set up the physics, run the model, and process the results).
Read more on: Video Tutorial: Introduction to the Structural Mechanics Module
