Numerical-Analytical Investigation into Impact Pipe Driving in Soil with Dry Friction. Part II: Deformable External Medium
N. I. ALEKSANDROVA
N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: axial waves, elastic bar, dry friction, pulsed loading, numerical modeling
Abstract
Under analysis is travel of P-waves in an elastic pipe partly buried in soil with dry friction. The mathematical formulation of the problem on impact pipe driving in soil is based on the model of axial vibration of an elastic bar, considering lateral resistance described using the law of solid dry friction. The author solves problems on axial load on pipe in interaction with external elastic medium, and compares the analytical and numerical results obtained with and without accounting for the external medium deformabilit.
|
