Evaluation of nonlinear differential Models for the Simulation of Polymer Melts
Kroll, J. and Turek, S. and Westervoß, P.
KGK KAUTSCHUK GUMMI KUNSTSTOFFE
Volume: 70 Pages: 48-52
An improved understanding of nonlinear elastic effects of rubber polymers involving very high relaxation times is of intensified interest, while the description and simulation of such flows is still a challenging problem. The present work "Evaluation of nonlinear differential models for the simulation of polymer melts" evaluates the capability of certain differential viscoelastic models in describing the nonlinear behavior at standard rheological flow states. It turns out that the numerical results using the differential model approach are not able to represent basic flow effects sufficiently. The inadequacies will be analyzed further and traced back to principal limits of the differential modeling approach used.