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COM017 – COMSOL:

Elastic material model with creep


Description

This Test Program is recommended for modeling the creep response of elastic materials.

COMSOL Material

Linear Elastic + Creep 

Test Program

We recommend the following base tests:

Test ID Description # Strain Levels # Repeats # Specimens

UT006

Tensile creep testing (up to 12 hours)

2

2

4

 
Depending on the complexity of loading or deformation, we may recommend the following additional tests:

Test ID Description # Strain Levels # Repeats # Specimens

UC006

Compression creep testing (up to 12 hours)

1

2

2

UT004

Load/hold tensile test

2 (Strain levels)

2

4

VC001

Volumetric compression test (quasi-static)

1

2

2

VC005

Volumetric stress relaxation test

2 (Strain levels)

2

4

 

Notes

  • Creep testing at 2 or more stress levels is recommended to determine a suitable creep model for this material.

  • These tests are performed at room temperature. For other temperatures see COM018.

  • UC006 may provide non-homogeneous stress/strain data. Inverse calibration procedures may be necessary.

  • VC001 and VC005 are not needed for an incompressible material.

  • Veryst will provide a calibrated material model for the observed response and the material.

  • The resulting set of parameters can be used directly in COMSOL Multiphysics.


Specimen Requirements for Complete Test Program

  • 10 tensile (dog-bone) specimens

  • 4 compression cylinder specimens

  • 10 volumetric compression specimens

See description of individual tests for details on specimen geometries. Note that we request extra specimens to ensure a sufficient supply of specimens for valid testing.

Veryst can also assist in molding standard and non-standard test specimens.  Please contact us if you are interested in discussing this option.


Additional Validation

Veryst can perform additional validation, depending on the target material and the simulation application, through any of the following tests and any necessary component level FE simulation:

  • Micro-to-macro indentation responses

  • Cyclic tests with loading/unloading between different strain levels and zero stress level at different rates


More information

For a customized quotation, please click the button below and indicate the Test Program ID COM017, type of material, test temperatures and any other details (specimen geometries available, other unique constraints, etc.)

 


 


 

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