Author(s)

C.H. Liu, G. Meschke & H.A. Mang

Abstract

Large strain FE-analyses of localized failure in snow C.H. Liu, G. Meschke, H.A. Mang Institute for Strength of Materials, Technical University of Vienna, A-1040 Karlsplatz 13/202, Vienna, Austria ABSTRACT An algorithm for finite deformation plasticity theory, recently proposed by Simo [5] and Simo and Meschke [6], is applied to numerical simulations of localized failure in snow. Within the algorithmic framework for finite strain plasticity the classical Drucker-Prager model and the modified Cam-Clay model are employed for the representation of snow. The respective ma- terial parameters are calibrated according to results from hydrostatic and shear-box tests of snow specimen. The effectiveness of the FE-model is de- monstrated by means of re-analyses of the shear-box test, characterized by the formation of a sharp, localized failure zone. The traction mechanism of a single automobile tread moving over a snow-covered road surface is numerically simulated. The predicted failure mecha

Keywords