The transient rheology data for the unmodified 3H1 could be successfully fitted with the RP-S constitutive equation
As in [5,6], we consider a nonlinear and nonlocal elastic medium whose constitutive equation
is given by
The results suggest that a "segmented" constitutive equation
of Dorn type is most suitable for the low-temperature behavior, while a "hyperbolic" constitutive equation
may be preferable at high temperature.
Based on experiment research, the upper convected Maxwell constitutive equation
is suitable to describe the viscoelastic of polymer solution.
Integrating constitutive equation
(3) and using the Gauss divergence theorem the following equation is obtained:
Rubber characteristics in a given constitutive equation
are unique, and as such, testing needs to be repeated for every compound and test condition (temperature, aging media and period).
Schneck, "A constitutive equation
for whole human blood" Bzorheologv, 1976.
Substituting from the constitutive equation
(8) into the above equation and using [theta] = T - [T.
The constitutive equation
can be expressed in the uniaxial form as
Based on this model, a theoretical calculation was compared with CA fiber dry-spinning industry data , Gou and McHugh [12, 13] developed a modified dry-spinning model with a viscoelastic constitutive equation
To consider wave propagation in the felt material and using the results of the piano hammers study, we proposed in  a one-dimensional constitutive equation
of the wool felt material in the form
The common polymer constitutive equation
is the Ogden hyperelastic model, having doubly-infinite material-specific constants.