Blog Articles
Calibrate LS-DYNA *MAT_ADD_INELASTIC
The LS-DYNA *Mat_Add_Inelalstic is a new and useful model framework that can easily be calibrated using MCalibration.
How to Calibrate a Temperature-Dependent Abaqus Hyperelastic Model
It is easy to quickly calibrate a temperature-dependent Abaqus Hyperelastic model. This article shows how using MCalibration.
How to Calibrate a Temperature-Dependent Ansys Hyperelastic Model
It is easy to quickly calibrate a temperature-dependent Ansys Hyperelastic model. This article shows how using MCalibration.
Experimental Testing for Material Model Calibration of a Thermoset
This article shows what experiments to perform on a thermoset in order to calibrate a continuum level material model.
Experimental Testing for Material Model Calibration of a Thermoplastic
This article explains what experiments to perform on a thermoplastic in order to get the required data for material model calibration.
Experimental Testing for Material Model Calibration of a Rubber
This article explains what experiments to perform on a rubber material in order to get the required data for material model calibration.
Calibrate the BB-Model using a Single Experiment
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.
How to Calibrate an Abaqus Material Model to Tension Data with Necking
The Tension Test load case in MCalibration is useful for calibrating an Abaqus material model to uniaxial tension data with necking.
Free Webinar: Material Model Calibration Tutorial
Information about our upcoming webinar on how to quickly use experimental data to calibrate a non-linear viscoplastic material model.
Which Ansys Creep Model is Best?
Review of different creep models that are available in Ansys Mechanical. In the article I will recommend which to use and which to avoid.
Which Abaqus Creep Model Should You Use?
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.
Should You Use Isotropic Hardening Plasticity for Polymers?
Article discussing how isotropic hardening plasticity works, when you should use it, and issues that can occur if you use it incorrectly.
LLDPE Material Modeling
Demonstration of how you can use the PolyUMod Material Database model for LLDPE. This is an excellent model for generic LLDPE.
Residual Strain Prediction
Most tests are in displacement control, but residual strain is measured in load control. This article explains how to use this mixed data.
Make Your Own Hyperelastic Model
One way to quickly improve the accuracy of the Arruda-Boyce model is to add one more strain energy funcion.
Gent Hyperelasticity
Gent hyperelasticity theory and parameter calibration. The Gent model is available in Ansys Mechanical and COMSOL Multiphysics.
3 Reasons the Poisson’s Ratio is not Useful
This article presents 3 reasons the Poisson’s ratio is not useful, and also explains how you can fix the problems.
Material Model from Tension Force History
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.
FE Material Model from Tension with Necking
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 – A Great Update for Linux Users
Abaqus 2022 contains some really nice improvements for Linux users. This article summarizes the key improvements.
Cold Drawing FE Simulations of Polycarbonate
Part 1: Tutorial on how to predict the cold drawing or necking response of thermoplastics (such as polycarbonate).
Stiffness Non-Linearity of Viscoplastic Material Models
Tutorial on how to make the PolyUMod TN and TNV models better capture the stiffness non-linearity before yielding.
Blatz-Ko Model
The Blatz-Ko model can be used for both foams and rubber-like materials. This article explains the theory.
Best PEEK Material Model in 2022
This article examines which material model is best for PEEK. Some of the basic plasticity models are surprisingly bad.
Anisotropic Hill Strain
Anisotropic materials often need an effective strain measure. The Hill strain is useful in those cases.
How to Use Units in MCalibration
This video shows how you can work with, and change to different units in MCalibration.
PolyUMod Now Includes UCREEPNETWORK and VUCREEPNETWORK Models
Version 6.4.0 of PolyUMod includes 2 advanced UCREEPNETWORK and VUCREEPNETWORK models that can be used with the Abaqus PRF model.
Is Pure Shear the Same as Planar Tension?
This article examines the difference between simple shear, pure shear, and planar tension.
Is Uniaxial Compression the Same as Biaxial Tension?
It would be very handy if uniaxial compression was the same as biaxial tension. But is it? This article has the answer.
How Important is the Bulk Modulus in FEA?
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 on the FE results.
Calibrate Any COMSOL Multiphysics Material Model using MCalibration
MCalibration can calibrate all solid mechanics material models in COMSOL Multiphysics. This tutorial shows how.
COMSOL: How to Calibrate the Extended Tube Model
Demonstration of how you can quickly calibrate the Extended Tube Model that is available in COMSOL Multiphysics.
The Preload Time in a Stress Relaxation Test is Important
The preload time is important when you analyze a stress relaxation experiment. This article explains why.
Convert Stress Relaxation Data to a Linear Viscoelastic Master Curve
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.
Quickly Extract Stress-Strain Data from an Image
Tutorial on how to extract the data from an image of a graph into either an external data file or MCalibration. The data extraction allows for the use of cubic splines.