| Code | Casson_Yield_Stress |
| Name | Casson Yield Stress |
| Parents | Property > Stress > Shear_Stress > Yield_Stress |
| Description | Resistance to initial flow; the stress required to start fluid movement. The Casson model equation is: SQRT(Shear_Stress) = SQRT(Yield_Stress) + SQRT(Plastic_Viscosity X Shear_Rate) |