The Mooney-Rivlin model be calibrated to monotonic uniaxial tension data, but in most cases it is better to use more experimental data.

Summary of 4 things that are important to know about the Ogden model. It is a very powerful model, but it can be difficult to use correctly.

The Arruda-Boyce Eight-Chain model is a micromechanism-inspired hyperelastic model that works very well. This article explains the theory.

Did you know that almost all FE simulations underpredict the residual strain / displacements in BENDING. This article explains why.

Did you know that it is possible to predict permanent set using a viscoelastic material model? This article explains how.

Time-Temperature Superposition (TSS) is an excellent tool when a material is thermorheologically simple. This article explains how.

Summary of the new key features in MCalibration 6.6.0.

Did you know that MCalibration can be used from the command line? This article lists the available command line arguments.

The LS-DYNA *Mat_Add_Inelalstic is a new and useful model framework that can easily be calibrated using MCalibration.

It is easy to quickly calibrate a temperature-dependent Abaqus Hyperelastic model. This article shows how using MCalibration.

It is easy to quickly calibrate a temperature-dependent Ansys Hyperelastic model. This article shows how using MCalibration.

This article shows what experiments to perform on a thermoset in order to calibrate a continuum level material model.

This article explains what experiments to perform on a thermoplastic in order to get the required data for material model calibration.

This article explains what experiments to perform on a rubber material in order to get the required data for material model calibration.

It is possible to calibrate a two-network visco-plastic material model to experimental data from a single experiment. This article explains how to do it.

The Tension Test load case in MCalibration is useful for calibrating an Abaqus material model to uniaxial tension data with necking.

Information about our upcoming webinar on how to quickly use experimental data to calibrate a non-linear viscoplastic material model.

Review of different creep models that are available in Ansys Mechanical. In the article I will recommend which to use and which to avoid.

Tutorial on Abaqus creep laws, which 2 you should not use, and which are the best. I also discuss how creep models work for polymers.

Article discussing how isotropic hardening plasticity works, when you should use it, and issues that can occur if you use it incorrectly.

Demonstration of how you can use the PolyUMod Material Database model for LLDPE. This is an excellent model for generic LLDPE.

Most tests are in displacement control, but residual strain is measured in load control. This article explains how to use this mixed data.

One way to quickly improve the accuracy of the Arruda-Boyce model is to add one more strain energy funcion.

Gent hyperelasticity theory and parameter calibration. The Gent model is available in Ansys Mechanical and COMSOL Multiphysics.

This article presents 3 reasons the Poisson's ratio is not useful, and also explains how you can fix the problems.

Part 3 in our series on how to calibrate a material model from tension force data. This article focuses on using Abaqus for the calculations.

Part 2: Calibrating a material model from tension with necking experimental data is surprisingly difficult. This article explains one approach to do it.

Abaqus 2022 contains some really nice improvements for Linux users. This article summarizes the key improvements.

Part 1: Tutorial on how to predict the cold drawing or necking response of thermoplastics (such as polycarbonate).

Tutorial on how to make the PolyUMod TN and TNV models better capture the stiffness non-linearity before yielding.