Theory of the Yield Stress Dependence on Strain-Rate
Theory of how the constitutive elements influence the predicted yield stress dependence on strain rate
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Category: Theory
Best Material Model for Polycarbonate at High and Low Strain Rates
Review of how different material models can be used to predict the non-linear response of PC. Also covers how the yield stress depends on the strain rate.
The Math Behind Stress Relaxation and Creep of Polymers
Quick discussion about the math behind stress relaxation and creep in polymers.
Predicting the Long-Term Stress Relaxation Response of Rubbers
Discussion about how to extrapolate the stress relaxation response of rubbers to long times.
Predicting the Long-Term Stress Relaxation Response of Thermoplastics
Discussion about how to best estimate the long-term stress relaxation response of a thermoplastic based on short-term data.
Why Does Rubber Have Odd Temperature Dependence?
This article explains why some rubbers get softer with increasing temperature, and why some rubbers get stiffer.
Stress Triaxiality and Thermoplastics
The applied stress triaxiality influences the mechanical response of thermoplastic materials in non-intuitive ways. In this article, I will explain how.
Material Modeling of Polymers
Here is a presentation about (non-linear) material modeling of polymers. I gave the presentation on 2021-06-24.
Practical Differences Between Linear and Non-Linear Viscoelasticity
Review of some practical differences between linear and non-linear viscoelasticity.
5 Common Mistakes when using Hyperelasticity
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.