Category: Theory

Review of some practical differences between linear and non-linear viscoelasticity.

Here’s a summary of 5 common mistakes when using Hyperelasticity in a FE model. I see these errors frequently, so read this article to make sure you don’t make them too.

When you work with material models it is always important to think about the type and quality of experimental data that you have. I wrote

Discussion about why the MCalibration implementation of the Abaqus PRF model is different than the Abaqus version.

The theory behind the common Hyperfoam, Ogden foam, and Hill foam models. Also covers how to calibrate these useful models.

Detailed discussion about the Holzapfel-Gasser-Ogden (HGO) model. Features, theory, and calibration approaches are covered.

Clear description on how to properly analyze simple shear data. Also discusses how to properly perform simple shear tests and how to use the data in MCalibration.

Can friction cause viscoelasticity in a compression test? What is negative barrelling? This article discusses the theory of uniaxial compression testing

What is the Payne Effect, and how can it be modeled? All of that is covered in this tutorial.