I want to analyse a component made from Polyurethane. The uniaxial and biaxial test data are required for the curve fitting of the stress strain curves of any hyperelastic model. Where can I find standard and reliable test data?
Actually, you don't need biaxial or shear test data for material modeling of polyurethane elastomers. PU can be accurately modeled using the Bergstrom-Boyce constitutive model, which is also available in ANSYS and requires only uniaxial tension and/or compression data for calibration (curve fitting).
I've been working with constitutive modeling of PU dedicated for sealing applications, and the B-B model has been successfully used to capture all the major nonlinear phenomena of the stress-strain behavior of PU, including time/strain-rate dependence, hysteresis (energy loss), Mullins' softening, and stress relaxation.
but Where can I find uniaxial tension and/or compression data for calibration ? or Do I have to perform a test on a specimen for the data?
start here...
https://polymerfem.com/articles/material-models/bergstrom-boyce-model-aa
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