Hershel-Bulkley model

For non-Newtonian materials that have a yield stress, the Casson or Hershel-Bulkley models can be used. The Casson model is represented by the equation,... 

The Hershel-Bulkley model describes material with a yield stress and a linear relationship between log shear stress and log shear rate ... 

Hence, the Bingham plastic model is a special case of the Hershel-Bulkley model when = 1. Slurries following the Bingham plastic model will be discussed in more detail in the next section. 

Large-scale MR dampers were used for the study which can generate a 200 kN damper force at a velocity of 0.1 m/s (Chae et al. 2010). The parameters for the Hershel-Bulkley model associated with the large-scale MR damper are /o = 138.5 kN, C= 161.8 kNsec/m, and n = 0.46. 

Here tq is the yield stress and mo is the slope of the line of Xyx - To versus dVx/dy. The Hershel-Bulkley model is given as... 

H-B-P Hershel-Bulkley model with Papanastasiou s adaption... 

Performance-Based Design Prondure for Structures with Magneto-Rheological Dampers, Fig. 2 Hershel-Bulkley visco-plasticity MR damper model (a) force-velocity relationship (b) force-displacement relationship... 

Hershel-Bulkley quasi-static MR damper model is used. Figure 2 shows the force-velocity and force-displacement relationships for the model where the damper force/is given as... 

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