Dynamic Characterization of Two‐Degree‐of‐Freedom Equipment‐Structure Systems
- 1 January 1985
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Engineering Mechanics
- Vol. 111 (1) , 1-19
- https://doi.org/10.1061/(asce)0733-9399(1985)111:1(1)
Abstract
A two‐degree‐of‐freedom equipment‐structure system is studied to find its intrinsic properties which are needed for analysis of more general secondary systems. Perturbation theory is used to find closed form expressions for the modal properties of the system in terms of the properties of the individual subsystems. Three important characteristics of the system are identified: tuning, interaction, and nonclassical damping. Mathematical expressions are defined for each of these characteristics and criteria are developed to measure their influences on the response of the equipment. The expressions for the modal properties and the criteria for tuning, interaction, and nonclassical damping are new results for the two‐degree‐of‐freedom system. These results form the bases for analysis of multiply supported multi‐degree‐of‐freedom secondary systems.Keywords
This publication has 7 references indexed in Scilit:
- Dynamic Response of Multiply Supported Secondary SystemsJournal of Engineering Mechanics, 1985
- Modal decomposition method for stationary response of non‐classically damped systemsEarthquake Engineering & Structural Dynamics, 1984
- Dynamic Analysis of Light Equipment in Structures: Response to Stochastic InputJournal of Engineering Mechanics, 1983
- Seismic Response by SRSS for Nonproportional DampingJournal of the Engineering Mechanics Division, 1980
- Seismic analysis of internal equipment and components in structuresEngineering Structures, 1979
- Response of a Multidegree-of-Freedom System to Nonstationary Random ExcitationJournal of Applied Mechanics, 1978
- Response of Two-Degree-of-Freedom Systems to White Noise Base ExcitationThe Journal of the Acoustical Society of America, 1961