Blog Articles
Strain Amplitude Sweeps in MCalibration
Quick demo of how to setup a strain amplitude sweep in MCalibration.
Quickly Setup Altair Radioss™ to use PolyUMod
Succinct tutorial on how to setup Altair Radioss to use a PolyUMod material model.
Instantaneous Calibration of Abaqus Linear Viscoelasticity using DMA Data
Summary of how you can instantaneously calibrate an Abaqus linear viscolastic material model using DMA data using MCalibration version.
Toe-in Compensate Experimental Data
Detailed description of how the toe-in compensation function in MCalibration works.
How to Predict Permanent Set in Rubbers
Discussion about how to test end model the permanent set of rubbers
Setup an Altair Radioss™ 2021 FE Model using Altair HyperMesh™
Complete step-by-step tutorial on how to use HyperMesh to setup a Radioss FE model with a PolyUMod material model.
Run Altair Radioss™ with PolyUMod using the Command Line
Short tutorial on how to run Radioss with the PolyUMod library from the command line.
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.
Plot Viscoplastic Strain in PolyUMod and MCalibration
Description of how to plot the viscoplastic strain magnitude when using PolyUMod or MCalibration.
Adiabatic Heating in MCalibration
Tutorial on how to include adiabatic heating in your material model calibration using MCalibration.
New Features: Version 6.1.0
Summary of the key new features of version 6.1.0 of MCalibration and PolyUMod.
Best Material Models in 2021 – Thermoplastic Elastomers
Best Abaqus and Ansys material models in 2021 – thermoplastic elastomers
What is Better: Stress Relaxation or Cyclic Loading?
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
Abaqus PRF Model – Network Parameters
Discussion about why the MCalibration implementation of the Abaqus PRF model is different than the Abaqus version.
Hyperfoam Modeling of Soft Foams
The theory behind the common Hyperfoam, Ogden foam, and Hill foam models. Also covers how to calibrate these useful models.
Holzapfel-Gasser-Ogden Model
Detailed discussion about the Holzapfel-Gasser-Ogden (HGO) model. Features, theory, and calibration approaches are covered.
How to Predict Stress Reduction After Yielding
Discussion of how to select and calibrate a material model that can predict stress reduction after yielding.
5 Common Mistakes when Analyzing Simple Shear
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?
Can friction cause viscoelasticity in a compression test? What is negative barrelling? This article discusses the theory of uniaxial compression testing
Payne Effect: Theory and Modeling
What is the Payne Effect, and how can it be modeled? All of that is covered in this tutorial.
All about the Mullins Effect
Detailed tutorial on how to: (1) experimentally test the Mullins damage of rubbers and elastomers; (2) calibrate the Ogden-Roxburgh Mullins model; (3) how to distinguish between Mullins damage and viscoelastic effects.
Ansys Bergstrom-Boyce Model
Information about how to calibrate a temperature-dependent Ansys Bergstrom-Boyce (BB) model to data for PEEK.
Abaqus Parallel Rheological Framework (PRF)
Instructions on how to use the Abaqus Parallel Rheological Framework (PRF) model.
Temperature-Dependent TNV Model Calibration
This tutorial will demonstrate how to calibrate a temperature-dependent Three Network Viscoplastic (TNV) material model using MCalibration.
Temperature-Dependent TN Model Calibration
This tutorial will demonstrate how to calibrate a temperature-dependent Three Network (TN) material model using MCalibration. The example will use experimental data for a PEEK material that was tested at 4 different temperatures.
Julia Implementation of Neo-Hookean Model
Short implementation of the Neo-Hookean model in Julia.
Using the Abaqus Hysteresis Model
In this article I will show how to use the Abaqus *Hysteresis model. The specific focus is on when to use Hybrid elements.
MCalibration Tutorial: Convergence Properties for Different Optimization Methods
MCalibration supports many different optimization methods. This study examines the performance of the different methods.
Plot PolyUMod State Variables in ANSYS
This article illustrates how the PolyUMod state variables can be plotted in ANSYS Workbench.
Calibrate a Material Model using DMA Data
Tutorial on how to calibrate a material model to both stress-strain and DMA data.
Introduction to PolyUMod®
PolyUMod is a library of advanced user material models for Abaqus, ANSYS, LS-DYNA, MSC Marc, and COMSOL.
How to Update a License using Activation Keys
Tutorial on how to update the MCalibration and/or PolyUMod license using activation keys without running the installer.
PolyUMod with Altair Radioss™
Demonstrate how to use a PolyUMod material model with the Radioss explicit FE solver. Information about how to select and calibrate a PolyUMod material model is presented in our “MCalibration for Altair” tutorial.
Calibrate Abaqus Cohesive Models using MCalibration
Tutorial how to use MCalibration to calibrate an Abaqus cohesive model
Cohesive Element Modeling in Abaqus
A case study aimed at showing how to use the different cohesive elements and surface models available in Abaqus.