Читать книгу The Rheology Handbook - Thomas Mezger - Страница 41

For a dashpot the force/velocity law or flow resistance law holds according to Newton:

F = CN ⋅ v (= CN ⋅ s ̇ )

with the force F [N], the dashpot constant CN [Ns/m = kg/s], the index N is due to Newton; the piston velocity v [m/s], and the time derivative of the piston’s deflection path s ̇ [m/s].

Here: F corresponds to the shear stress τ, CN corresponds to the viscosity η, v or s ̇ correspond to the shear rate γ ̇ , and s corresponds to the deformation γ.