Table 2.
Default material parameters for the considered Holzapfel-Ogden (HO) type materials. Column 'Model' gives the short name for the constitutive law; 'Ref.' the reference for the parameter fitting; 'Property' the material property specified by the parameter set; and in the following a list of the material parameters. Note that parameters a(•) have a unit (kPa), while parameters b(•) are dimensionless. Model "HO dispersion" includes dispersion of collagen fibers based on (7).
| Model | Ref. | Property | Parameters | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| a [kPa] | b | af [kPa] | b f | as [kPa] | b s | an [kPa] | b n | afn [kPa] | b fn | asn [kPa] | b fn | asn [kPa] | b sn | |||
| General HO | [30] | orthotropic | 0.180 | 9.762 | 2.204 | 21.597 | 0.098 | 49.878 | 0.508 | 27.719 | 1.291 | 5.295 | 1.345 | 2.017 | 0.947 | 4.514 |
| Reduced HO | [30] | orthotropic | 0.809 | 7.474 | 1.911 | 22.063 | – | – | 0.227 | 34.802 | 0.547 | 5.691 | – | – | – | – |
| Original HO | [39] | orthotropic | 0.33 | 9.242 | 18.535 | 15.972 | 2.564 | 10.446 | – | – | 0.417 | 11.602 | – | – | – | – |
| HO dispersion | [33] | orthotropic | 0.4 | 6.55 | 3.05 | 29.05 | 1.25 | 36.65 | – | – | 0.15 | 6.28 | – | – | – | – |
| One fiber HO | [39] | trans.-isotr. | 0.809 | 7.474 | 1.911 | 22.063 | – | – | – | – | – | – | – | – | – | – |
| Demiray | [16] | isotropic | 1.0 | 6.5 | – | – | – | – | – | – | – | – | – | – | – | – |