Influence of Soil Plug on Impact Pipe Driving Process
N. I. ALEKSANDROVA
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: сухое трение, импульсное нагружение, нелинейная динамика, численное моделирование, аналитическое решение, dry friction, impulsive loading, nonlinear dynamics, numerical modeling, analytical solution
Abstract
Different modes of advance of a driven pipe with a soil plug under rectangular impulse are investigated numerically and analytically with regard to dry friction between the pipe and plug and between the pipe and external stationary medium. The two model solutions are compared with and without regard to the pipe and plug elasticity. It is shown that elasticity of the pipe and plug is neglectable in case of a long-duration impulse.
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