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Mechanical Blog Posts

Estimating Hyperelastic Material Parameters via a Lap Joint Shear Test

September 3, 2020

For rubber, polymers, and biological tissue, the relationship between stress and strain is nonlinear, even at small loads. The lap joint shear test can be used to determine material properties.

Why Do Tennis Rackets Tumble? The Dzhanibekov Effect Explained…

September 1, 2020

If you toss a cellphone, tennis racket, wingnut, cereal box, or any object with 3 axes of rotation in the air, it will demonstrate this interesting and unusual effect…

How Do Bicycle Pedals Stay On?

August 27, 2020

Ever wonder why the left pedal of a bike has left-handed threads and the right pedal has right-handed threads, yet the pedals stay on when riding?

A Simulation App for Helical Spring Design and Analysis

August 21, 2020

Helical springs are found everywhere from medical devices to consumer and industrial products. Despite being commonplace for centuries, the design of a helical spring can be complex.

Optimizing an NIV Mask Design with Multiphysics Simulation

August 13, 2020

NIV masks offer a form of noninvasive monitoring and ventilation for COVID-19 patients, which lessens the need for ventilators and other mechanical respirators.

What Is the Best Way to Analyze Fuel Tank Vibration?

August 4, 2020

In a traditional approach for modeling a fuel tank, the fluid mass is dispersed through the tank’s wetted surface. A multiphysics method specifically models the acoustic pressure in the fluid.

Computing the HRTF of a Scanned Geometry of a Human Head

July 14, 2020

Designing cochlear implants, hearing aids, headphones, and other audio devices requires precise measurements of the head-related transfer function (HRTF). Simulation and geometry import can help.

Modeling an Ear Canal’s Acoustics to Optimize In-Ear Audio Products

July 7, 2020

Ever notice an echo-like sound when wearing headphones or earbuds? Called the occlusion effect, this phenomenon can be studied using acoustics modeling to design better in-ear audio products.


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