Material Modeling

Veryst has extensive experience selecting and calibrating material models to capture the most important aspects of material behavior for your specific material and conditions during use.  Using MCalibration®, a software tool originally developed by Veryst and now available at, we can optimize model parameters for nearly any material model available in commercial finite element (FE) codes and under various loading modes.  This also includes the use of complex loading modes requiring inverse calibration methods.  We also developed the PolyUMod® library of advanced material models to expand the capabilities of commonly used commercial finite element packages, including Abaqus, ANSYS, COMSOL Multiphysics, LS-DYNA, and MSC.Marc.

In addition, engineering products experience multiaxial loading at many different strain rates and temperatures.  Veryst recommends validating calibrated material models using a separate set of experiments designed to match the loading environment.  Such validation test programs are increasingly emphasized by regulatory bodies such as the FDA (U.S. Food and Drug Administration).  Veryst offers multiple validation tests to fit your problem best and can also design custom tests and fixtures for your application.  Results from tests are compared to simulations using your calibrated material model in order to validate its predictive capability for your application.

Material Model Calibration

Veryst has extensive experience selecting and calibrating a material model to capture the most important aspects of material behavior for your specific material and conditions during use.
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Material Model Validation

Once a material model has been selected and calibrated to the test data, Veryst recommends validating the model by performing a test with a stress state different from any used for calibration.
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Polymer Foam Testing & Modeling

Polymer foams may exhibit extreme strain rate-dependence due to their structure. The low stiffness means testing the materials at high strain rates is particularly difficult. Veryst has developed multiple test methods to test and model these materials.

Polymer Material Models in Different FE Packages

All commercial FE packages provide material models for polymers, but Veryst Engineering’s PolyUMod® material library has advanced material models at the leading edge of polymer mechanics. We demonstrate the accuracy of a PolyUMod material model with native material models from Abaqus, ANSYS, and LS-DYNA.

PEEK Temperature Dependence

PEEK materials are increasingly used in a variety of industries with elevated temperature applications. This example shows how Veryst Engineering developed a temperature-dependent, nonlinear model of PEEK behavior for use in commercial FEA codes.

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