W. Liu, G. Meschke, H.A. Mang:
"Re-analyses of Tests on Soil-like Specimens by Means of Elasto-Viscoplastic Material Models";
ZAMM - Zeitschrift für Angewandte Mathematik und Mechanik,
Two standard geomechanical models - Drucker Prager model and Cam-Clay model - and a generalized plasticity model are formulated within the framework of the theory of multiplicative finite strain viscoplasticity. These material models are used for re-analyses of shear box tests, hydrostatic tests and oedometer tests on material model for snow required for studying the mechanical iteraction between automobile tires and snow-covered road surfaces. The experimental results of these geomechanical tests serve as the basis for calibration of the material parameters. Comments on the specific characteristics of the three models and on the sensitivity of the numerical results with respect to the chosen material parameters are given. Results from finite element analysis obtained from a classical displacement formulation are presented.
Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.