Shear stress decay coefficient

Out-of-phase component of complex viscosity Shear stress growth coefficient Shear stress decay coefficient Tensile stress growth coefficient Tensile stress decay coefficient... 

There is also a shear stress decay coefficient Tf t,y) that describes stress relaxation following the cessation of steady simple shear at a time f = 0. Data for this material function were reported by Menezes and Graessley [17], but it has been little used as it has not turned out to be a sensitive probe of nonlinear behavior. We note that so-called step strain in reality involves a very high, but not infinite, shear rate and is therefore a special case of relaxation following start-up of steady-simple shear. However, the most interesting nonlinear features of the response, which are the result of chain stretch, are lost when the shear rate is not high and the shearing time are not very short. 

Viscosity T), first normal-stress coefficient /i, second normal-stress coefficient /2 Shear stress growth coefficient T1+, first normal-stress growth coefficient t t[, second normal-stress growth coefficient /J Shear stress decay coefficient Tj", first normal-stress decay coefficient /f, second normal-stress decay coefficient /j Shear creep compliance J... 

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