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R. Blab, J. Harvey:
"Viscoelastic Rutting Model with Improved Loading Assumptions";
Talk: 9th ISAP, Kopenhagen (invited); 2002-08-17 - 2002-08-22.

A 3-dimensional FE model of a road pavement is presented, in which the temperature- and load-dependent performance of flexible pavements is characterized by a generalized Maxwell model and improved loading assumptions are used based on measurements of tire-road contact stresses. A method has been developed that permits the derivation of the required viscoelastic model parameters from dynamic shear tests. The model was evaluated using simulation calculations for a specific test structure on which rutting tests had been performed with a Heavy Vehicle Simulator (HVS). This evaluation demonstrated good agreement between the deformations predicted by the theoretical model and the deformations actually measured.