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This video demonstrates how you can edit and clean experimental data using MCalibration. Most raw experimental data files are not suitable for material model calibration, in this video I will explain how to quickly fix those files.

Did you know that using a gradient descent optimization approach to material model calibration sometimes works terrible, simply because of issues related to local minima of the error function. In this video I will discuss this topic and show how to work around it!

This video shows how you can calculate different large strain measures in simple shear using a Jupyter notebook. The purpose is to show how to quickly evaluate tensorial quantities using Python.

A quick 10 minute introduction to how to calibrate a viscoplastic material model using the MCalibration software.

Some polymers have a yield stress that is linearly dependent on the logarithm of the strain rate, for some other polymers the yield stress is bi-linearly dependent on the log of the strain rate. This difference can be very important when trying to decide if you should perform high strain rate experimental testing. In this video I will show how temperature sweep data of the storage and loss modu...

This video demonstrates how the glass transition temperature (Tg) depends on loading rate by examining stress relaxation data using MCalibration.

This video is part 4 in my series on continuum mechanics. The focus is on on how to define and calculate different types of strains based on the Green-Lagrange deformation tensors.

This video examines how useful ChatGPT-4 and other LLM are for explaining polymer mechanics theories. Are these tools you should us?

This video is part 3 in my series on continuum mechanics. The focus is on the spectral decomposition of the deformation gradient, and the left and right Cauchy Green tensors.

Deep Neural Networks is a powerful Machine Learning method. In this video I will show how to create a hyperelastic model using ML. I will show the complete Python code for the implementation and I will demonstrate some of the weaknesses of the approach.

This video is part 2 in my series on continuum mechanics. The focus is on vectors, tensors, and invariants. These concepts will be used in future videos in the series.

This video is part one of my series on continuum mechanics. The focus is on kinematics and the deformation gradient.

In this video I will discuss the theory for the Abaqus Marlow and Ansys Response Function Hyperelastic Models. I will show that these models are easy to use, but not necessarily better than any of the other I1-based hyperelastic models.

When calibrating a material model it is important to select the correct type of strain control in MCalibration. In a traditional compression test it is not possible to get tensile stresses, and you can achieve this also in MCalibration by selecting "strain control compression" as the control variable. Similarly, in a tension test of a thin specimen you cannot get a compressive stresses, and you...

How to Calibrate and Use a Temperature-Dependent Ansys TNM

Repeated Experimental Testing for Material Model Calibration

Hyperelastic Invariants: I1, I2, J

Why MCalibration is using a Different Prony Series

Best Material Model for Polycarbonate (PC)

Temperature-Dependent Thermal Expansion in the PolyUMod TNV

Temperature Testing for Material Model Calibration

Best Material Model for Polyetherimide (PEI)

The Stress Concentration for Plate with a Hole is NOT 3.

Use Transverse Strain Data in a Material Model Calibration

How to Know if a Material is Linear Viscoelastic

Configurational Mechanics and Crack Driving Forces

Shape Memory Alloy Material Models

DMA Temperature Sweep Modeling

Material Models for Shape Memory Polymers