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Analyzing Capacitive Touchscreens in Consumer Electronics

January 1, 2015

Consumer electronics such as phones, e-book readers, computers, and even wristwatches are all making use of touchscreen technology. Many of these touchscreens use some form of capacitive sensing. Let’s take a look at how to analyze such a capacitive sensor using the COMSOL Multiphysics® software and the add-on AC/DC Module.

Biomechanical Model Evaluates Human Response to Vibrations

December 31, 2014

Depending on their magnitude and frequency, vibrations can be a source of discomfort and even pain for the human body. The impact of these vibrations is surely felt, but wouldn’t it be interesting to visualize how different parts of the human body respond when placed in such an environment? We introduce you to a multibody model that enables you to analyze the body’s dynamic response to vibrations.

New Piezoelectric Modeling Interface in COMSOL 5.0

December 30, 2014

We have introduced a new interface for simulating piezoelectric devices in version 5.0 of the COMSOL Multiphysics simulation software. This interface aims to achieve several things. In this blog post, I will explain what these things are and how you can use them.

Visualizing Fluid Flow with Streamline Plots

December 29, 2014

Last month, we saw examples of contour plots (and their 3D counterparts, isosurfaces) that were created to show the stress in a pulley and the acoustic frequency in a loudspeaker. In this installment of the postprocessing series, we’ll explore the use of streamlines to visually describe fluid flow.

How to Obtain Fatigue Model Parameters

December 26, 2014

When simulating fatigue, you are faced with two main challenges. The first is to select a suitable fatigue model for your application and the second is to obtain the material data for the selected model. I recently addressed the first challenge in the blog post “Which Fatigue Model Should I Choose?“. Today, I will address the second challenge and discuss how you can obtain fatigue model parameters.

Ray Tracing in Monochromators and Spectrometers

December 25, 2014

Optical devices such as monochromators and spectrometers can be used to separate polychromatic, or multicolored, light into separate colors. These devices have many applications in diverse areas that range from chemistry to astronomy. Using built-in tools in the Ray Optics Module, it is possible to model the separation of electromagnetic rays at different frequencies with a monochromator or spectrometer as well as analyze the resolution of such devices.

Maximum Evaluations on Parallel Sections

December 24, 2014

In a previous blog entry, we shared a postprocessing technique for creating an animation by combining parallel slices in a 3D steady-state model. Today, we will look at another postprocessing trick: how to evaluate and plot the maximum (or the minimum, average, or integration) value of any variable at various parallel sections along the axial coordinate.

Modeling a Surface Micromachined Accelerometer

December 23, 2014

Surface micromachining is a process used to manufacture MEMS devices, which includes accelerometers. In this blog post, we model the electric field and forces within an accelerometer as well as highlight a new geometry feature available in COMSOL Multiphysics version 5.0.

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