Date of Award
Doctor of Engineering Science in Chemical Engineering
Chemical Engineering and Chemistry
John E. McCormick
Dimitrios P. Tassios
A nonlinear viscoelastic model has been developed to describe the non-Newtonian viscosities and the primary normal stress differences of high polymers at steady-state shearing flow.
It has been demonstrated that the Huang-Shangkuan model gives the best representation of the experimental data for a wide range of shear rates. In the high shear rate region the Huang-Shangkuan model is distinguished among other models by its capability to predict the nonNewtonian viscosities and the primary normal stress differences Which the other models fail to predict.
Continuum mechanics, Lodge's network theory and Rouse's theory provide specific information in developing our model. The theoretical aspect of this model is also supported by the experimental data, Which were taken using the accurate Weissenberg rheogoniometer.
Shangkuan, Yon-Li, "A nonlinear viscoelastic model" (1974). Dissertations. 1292.