Terms and Units Flow shear stress=F A velocity dx shear straln=y y Foree Ares=A shear rate=y==y 3 Modulus(solids)=G= 么 )=刀=g Extensional Viscosity a,=4 Force → Velocity cdhy =% w. w.p 10.1 33 Flow y v y dt dx shear rate y dx shear strain A F shear stress = = = = = = = γ γ σ & γ σ η γ σ & = = = = cos ( ) ( ) Vis ity liquids Modulus solids G Terms and Units y Area = A Force velocity dx Extensional Viscosity Force Velocity ε σ η ε ε σ & & e e e h V h dh A F = = = = h dh