Contributions to Proceedings:

C.H. Liu, G. Meschke, H.A. Mang:
"Large Strain FE-Analyses of Localized Failure in Snow";
in: "Proceedings of the 3rd International Conference on Localized Damage 94, Computer Aided Assessment and Control", Computational Mechanics Publications, Southampton, 1994, 461 - 469.

English 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 material parameters are calibrated according to results form hydrostatic and shear-box tests of snow specimen. The effectiveness of the FE-model is demonstrated 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 mechanism of snow in consequence of the movement of the tread agrees relatively well with respective experimental observations.

[5] J.C. Simo: "Algorithms for Static and Dynamic Multiplicative Plasticity that Preserve the Classical Return Mapping Schemes of the Infinitesimal Theory", Comp. Meth. Appl. Mech. Eng., Vol. 99, pp. 61-112, 1992.

[6] J.C. Simo and G. Meschke: "A New Class of Algorithms for Classical Plasticity Extended to Finite Strains. Application to Geomaterials", Computational Mechanics, Vol. 11, pp. 253-278, 1993.

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