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Multiple Modes of Steady-State Slide-Rock Response

by Harry W. Shenton, III, Nat Inst Stda & Tech, Gaithersburg, United States,
Nicholas P. Jones, Nat Inst Stda & Tech, Gaithersburg, United States,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

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 | Ground motion | Two-dimensional analysis | Rigid body dynamics | Equations of motion

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