Multiple Modes of Steady-State Slide-Rock Responseby Harry W. Shenton, III, Nat Inst Stda & Tech, Gaithersburg, United States,
Nicholas P. Jones, Nat Inst Stda & Tech, Gaithersburg, United States,
Abstract: The dynamic response of free standing rigid bodies to base excitation can be quite complex, as evidenced by the five motions or modes to be considered in a two-dimensional analysis: rest, slide, rock, slide-rock, and free-flight. Using steady-state slide and rock solutions, the existence of a multiple-mode response is examined in terms of the amplitude of ground acceleration and coefficient of friction. The analysis is restricted to a rectangular block with a height-to-width ratio greater than 1.
Subject Headings: Rocks | Friction | Steady states | Rigid body dynamics | Two-dimensional analysis | Equations of motion | Dynamic response | Excitation (physics)
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