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

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

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

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

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

The Blatz-Ko model can be used for both foams and rubber-like materials. This article explains the theory.

Anisotropic materials often need an effective strain measure. The Hill strain is useful in those cases.

This video shows how you can work with, and change to different units in MCalibration.

This article examines the difference between simple shear, pure shear, and planar tension.

Investigation of how important the bulk modulus is in a FE simulation. Using MCalibration and Abaqus, I show that most of the time the bulk modulus has virtually no influence

Demonstration of how you can quickly calibrate the Extended Tube Model that is available in COMSOL Multiphysics.

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

Video tutorial showing how to remove one load cycle from an experimental test.

Discussion about how to extrapolate the stress relaxation response of rubbers to long times.