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Blog Articles
2023-03-28
This article explains the foundation and multinetwork structure of the PolyUMod TNV material model and why it is so accurate.
2023-03-21
The integral equation form of linear viscoelasticity is identical to a rheological model with parallel spring-and-dashpot networks.
2023-03-14
Tutorial on how to simulate the large-strain temperature-dependent response of thermoplastics through the glass transition temperature (Tg).
2023-03-10
This article explains how you can calibrate a viscoelastic material model to DMA temperature sweep data alone.
2023-02-28
Sometimes it is possible to calibrate a viscoplastic material model to a single monotonic tension curve. This article has the details.
2023-02-19
Explanation of how linear viscoelasticity can predict the response due to a dynamic load. The focus is on the storage and loss modulus.
2023-02-13
Combined hardening plasticity is perhaps the most interesting type of plasticity model. This article explains how to use this type of model.
2023-02-07
A Prony Spectrum is a very useful concept that will help you calibrate and use linear viscoelastic models. This article explains how to do it.
2023-01-31
This is part 3 of my series on Linear Viscoelasticity. The focus of this article is on making the calculations large strain and multiaxial.
2023-01-23
Step-by-step video tutorial on how to set up and use a PolyUMod material model in MSC Mentat and Marc.
2023-01-16
This is part 2 of my series on Linear Viscoelasticity. The focus of this video is on how to calculate the stress response in a numerically efficient way.
2023-01-10
This is part 1 of my series on linear viscoelasticity. The focus is on how to derive the stress response in uniaxial loading at small strains.
2022-12-30
In this article I will explore how useful the new AI tool ChatGPT from OpenAI is for topics related to polymer mechanics.
2022-12-29
Study aimed at determining the most accurate material model for a polybutadiene rubber exposed to large strain time-dependent loading.
2022-12-23
If you repeat a material model calibration multiple times, should you expect the optimal material parameters to be unique?
2022-12-19
Stress relaxation and creep are useful experiments. This article shows that even short-term experiments of these types are great.
2022-12-12
Deep dive on how to select and calibrate a suitable material model for a Santoprene thermoplastic vulcanizate.
2022-12-05
Tutorial on how to create an accurate creep material model for an Elastollan TPU using experimental data form the CAMPUS material database.
2022-11-27
In this article I show how to quickly calibrate an anisotropic viscoplastic material model to uniaxial tension data.
2022-11-22
In this article I explain how you can graphically visualize the rheological model in order to better understand how these models behave.
2022-11-15
What is the Gough-Joule effect and how to model it in a finite element analysis? This article explains it all.
2022-11-07
This article demonstrates one common mistake that people make when they generate a TTS Master Curve from DMA data.
2022-11-01
Nylon is a commonly used in industrial applications. This article examines which material model is most accurate for Nylon PA66.
2022-10-25
This article shows that the WLF equation is always the same or better than the Arrhenius model.
2022-10-16
Most people assume that the volumetric relaxation is zero in a Prony series. This article demonstrates a different approach that can be better for some materials.
2022-10-11
CPVC is s commonly used industrial material. This study determines the best large-strain material model for CPVC.
2022-10-04
This article demonstrates one problem that can occur if you calibrate a material model without considering the initial Young's modulus
2022-09-26
PTFE (Teflon) is a material with many unique properties. This article examines the accuracy of different material models for PTFE.
2022-09-17
In this article I examine how different material models can predict the response of ABS, and I will show which model is the best!
2022-09-10
The commercial FE solver Radioss from Altair is now open source! This article shows how to download, compile, and use the OpenRadioss.