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All posts by Henrik Sönnerlind

Frequency Response of Mechanical Systems

June 5, 2019

Read this blog post for a detailed look at damped mechanical systems, a guide to setting up frequency-response analyses in COMSOL®, and a discussion of how to interpret your results.

Introduction to Numerical Integration and Gauss Points

May 1, 2019

In this comprehensive blog post, we go over the theory behind numerical integration, Gaussian quadrature, Gauss points, weak contributions, and much more.

How to Model Different Types of Damping in COMSOL Multiphysics®

March 15, 2019

Structural dynamics analyses can be difficult if you have to account for damping. Get a demonstration of how to use the different numerical models for damping in COMSOL Multiphysics. Part 2 of 2.

Damping in Structural Dynamics: Theory and Sources

March 14, 2019

Here’s your introduction to the theory behind damping in vibrating structures, as well as its sources, including internal losses, friction, sound emission, and more. Part 1 of 2.

How to Perform Structural Analyses Using Shock Response Spectra

January 30, 2019

Mechanical engineers: Learn how to find shock response spectra, use combination methods for eigenmodes, perform missing mass correction, and display your results with the COMSOL® software.

Finding Answers to the Tuning Fork Mystery with Simulation

April 13, 2018

If you strike a tuning fork and hold it against a tabletop, the peak frequency of the emitted sound doubles. Is there a physical explanation for this “tuning fork mystery”?

Applying and Interpreting Saint-Venant’s Principle

January 22, 2018

Saint-Venant’s principle is found in most structural engineering textbooks, but what is its exact meaning? We go over its history, definition, and relevance to mechanical analyses.

How to Analyze Eigenfrequencies That Change with Temperature

May 22, 2017

In certain scenarios, such as in the MEMS field, the eigenfrequencies of a device can change with temperature. Here’s a guide to studying temperature-dependent eigenfrequencies.


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