Simulation of Metal Pipe Driving Into Soil with Batch Core Removal
A. L. Isakov, A. S. Kondratenko, A. M. Petreev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: погружение трубы, грунтовая пробка, сухое трение, сдвиговое напряжение, математическое моделирование, нелинейность, численный метод, аналитическое решение, Pipe driving, soil plug, dry friction, shear stress, mathematical modeling, nonlinearity, numerical method, analytical solution
Abstract
The interaction of an open pipe with an internal soil plug according to the Coulomb's law of dry friction is investigated. Various soil and pipe models are considered. For all models, finite-difference solutions were obtained, for some-analytical solutions describing the process of elastic interaction of a pipe and a plug. Good agreement between numerical and analytical solutions is shown. The results of numerical calculations for various models are compared and the applicability limits of the models are determined. The effect of Coulomb dry friction on the process of pipe and plug movement was studied.
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