Blog Articles
Instantaneous Calibration of Abaqus Linear Viscoelasticity using DMA Data
How to instantaneously calibrate an Abaqus linear viscoelastic material model using DMA data and MCalibration.
Toe-in Compensate Experimental Data
Detailed description of how the toe-in compensation function in MCalibration works. This can be very useful to quickly clean up data.
How to Predict Permanent Set in Rubber
Discussion about how to test end model permanent set in rubber materials. With the right material model it is possible!
Free MCalibration Course
Information about our free course on how to use MCalibration. The course covers experimental cleanup and model calibration.
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.
PolymerFEM 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?
Material Model Calibration When you work with material models it is always important to think about the type and quality of experimental data that you
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
Description of how to analyze simple shear data. Also discusses how to 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 barreling? 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 calibrate and use the Abaqus Parallel Rheological Framework (PRF) model in a non-linear finite element simulation.
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 PolyUMod TN Model
This tutorial demonstrates how to calibrate a temperature and strain-rate dependent PolyUMod TN model using MCalibration.
Julia Implementation of Neo-Hookean Model
Short implementation of the Neo-Hookean model in the mathematical language Julia. The model implementation is very simple.
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.
Convergence Properties for Different MCalibration 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.
Update a PolyUMod 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.
What Is A Material Model?
I often get asked to define the terms “Material Model” and “Material Parameter”. This short article tries to explain what these terms mean.
Bergstrom-Boyce (BB) Model Parameters
The Bergstrom-Boyce (BB) model is a powerful model for elastomers. This post graphically demonstrates what the material parameters mean.