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Mechanical Blog Posts

Powerful Packaging for Electronics in Extreme Environments

May 16, 2014

The power electronics industry is responsible for products used by billions of people: smartphones, televisions, certain car parts, and even components in motors and household objects. With such a diverse array of applications, many design requirements are considered during the making of these products, including power and energy density, cost, and customer safety. Arkansas Power Electronics International (APEI), a USA-based company, is refining designs for power packaging to control thermal management in power electronics devices, increase efficiency, and lower cost.

The Electromechanical Response of a Brake Design

May 13, 2014

We have the pleasure of introducing guest blogger, Mark Yeoman of Continuum Blue, who showcases what they can do for clients in the electromechanical brake field. Electromechanical brakes come in various designs, including single to multiple friction-face systems, power-off and power-on types, and those that include permanent magnets. With so many options, how do engineers make the right design choices for their application? With COMSOL Multiphysics, this can easily be done. Here, I will show you how.

How to Model Stresses and Strains in COMSOL Multiphysics

May 12, 2014

We have made a video tutorial for those of you who want to learn how to model stresses and strains in COMSOL Multiphysics. In under five minutes, we walk you through the modeling steps from setting up parameters and geometry to postprocessing the results. For simplicity’s sake, we use a wrench and bolt model to demo the concept.

Video: Mechanical Analysis Accelerates Time-to-Market

May 2, 2014

It’s no news that accurate mechanical analysis is key to avoiding product failure and manufacturing issues. What may be new is how you do it. Simulation software offers a modern approach to analyzing mechanical component and system designs. Watch this video to learn how COMSOL Multiphysics enables you to speed up time-to-market and optimize product designs.

Modeling Thermal Fatigue in Nonlinear Materials

May 1, 2014

Engineers simulating fatigue in nonlinear materials are faced with two challenges. You must correctly represent the material behavior with a constitutive relation and find a fatigue model that captures the life-controlling mechanism. Both challenges require a thorough material knowledge. Today, we will address these challenges when modeling thermal fatigue in nonlinear materials.

Natural Frequencies of Immersed Beams

April 22, 2014

Today, we invite guest blogger Nagi Elabbasi of Veryst Engineering to share a modeling example of immersed beams. When thin structures such as beams, plates, or shells are immersed in a fluid, their natural frequencies are reduced. The fluid also affects their mode shapes and is a source of damping. This phenomenon affects structures across a wide range of industries and sizes, from micro-scale structures (e.g. MEMS actuators) to larger structures (e.g. ships).

What Kinds of FSI Problems Can COMSOL Multiphysics Solve?

April 14, 2014

One of the questions we get asked all the time is: “Can I use COMSOL Multiphysics for solving my fluid-structure interactions problems?” Of course the answer is yes, so let’s talk a little about the various fluid-structure interaction (FSI) modeling techniques. Along the way, we will introduce the add-on modules you will need for these various types of analyses.

Modeling the Hydrostatic Pressure of a Fluid in a Deformable Container

April 9, 2014

In a previous posting, we looked at computing and controlling the volume of a cavity filled with an incompressible fluid, which solved for the static deformation of a fluid-filled rubber seal. In that example, we did not explicitly model the fluid, but added an equation to solve for the pressure, assuming incompressibility of the fluid. Here, we will extend this approach and include the hydrostatic pressure of the fluid in the deforming container.

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