Tutorial showing how you can take experimentally stress relaxation data at different temperatures and create both a master curve and a linear viscoelastic material model that captures all the data.
Theory of how the constitutive elements influence the predicted yield stress dependence on strain rate
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.
Video tutorial showing how to remove one load cycle from an experimental test.
Quick discussion about the math behind stress relaxation and creep in polymers.
Discussion about how to extrapolate the stress relaxation response of rubbers to long times.
Discussion about how to best estimate the long-term stress relaxation response of a thermoplastic based on short-term data.
Tutorial on how and when to set the ORIENT flag with using Abaqus and an anisotropic material model from the PolyUMod material model.
In this video I will show have to make most Abaqus/Standard simulations that use the PolyUMod library run faster (and with larger time increments). The key is to set an Abaqus time incrementation setting.
Demonstration of how to accurately predict the deformation response of a soda bottle under internal pressure.
How to run COMSOL Multiphysics using an input file and a command prompt. It is easy using the Java API.
Guide to using MCalibration and PolyUMod with COMSOL Multiphysics. A complete start-to-finish tutorial is presented.
Soft polymer foams, and some other materials, often exhibit different stiffnesses in uniaxial tension and compression. Most material models cannot predict this type of behavior, but there are some excellent choices for this.
A material model is considered Drucker’s stable if an increase in strain results in an increase in stress. In some cases it can be important to enforce that a material model is Drucker’s stable. This article shows how you can easily achieve this in MCalibration.
In this article I will show how you can quickly convert any Ansys material model (in APDL format) into stress-strain predictions using MCalibration. Here are
It is easy to create stress-strain plots for any Abaqus material model using MCalibration. This article shows how.
The Extended Tube model is one of the most accurate hyperelastic material models available, but it can be difficult to use if you don’t understand how the material parameters influence the predicted stress-strain response. This article will demonstrate that by example.
Tutorial showing how to use MCalibration to calibrate the Abaqus Johnson-Cook model with failure to experimental data.
Introduction to how MCalibration and PolyUMod can be used with Altair Radioss. This is a great starting point if you are new to our software.
Resulting is a term used in the book “Thinking in Bets” to describe how not to make decisions when all you have is limited information. In this article I will describe how this relates to material modeling.
Review of some practical differences between linear and non-linear viscoelasticity.