LS-DYNA Hyperviscoelastic Rubber (MAT_077)
Test ID
G-782
Description
Testing and model fitting areperformed to generate data for hyperviscoelastic rubber material models. Hyperelastic material properties are generated as per [G-780] with either a Mooney-Rivlin or Ogden model. Additionally, stress relaxation measurements are performed and a six parameter Prony series is fit to the master curve viscoelastic data. Both models are used to create a MAT_077 model for LS-DYNA (either MAT_077_H or MAT_077_O depending on what hyperelastic model is used in fitting).
Included Tests
| 1x | D-010 | Solid Density |
| 1x | M-205 | Tensile Properties of Elastomers |
| 1x | M-211 | Lubricated Compressive Stress-Strain (Biaxial Tension) |
| 1x | M-611 | Stress Relaxation/Creep Compliance by Time Sweeps |
Options
If simulations of mullin's effect are desired, please specify "precycling".
Samples
: 6 hyperelastic test specimens
[details]Application
This model is useful for hyperelastic materials that show rate effects. This can be used to simulate impact loading or creep situations depending on how the stress-relaxation measurements are made.
