An Efficient Method for Predicting the Vibratory Response of Linear Structures With Friction Interfaces

[+] Author and Article Information
E. Bazan

Paul C. Rizzo Associates, Inc., Pittsburgh, PA 15235

J. Bielak

Department of Civil Engineering, Carnegie-Mellon University, Pittsburgh, PA 15213

J. H. Griffin

Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, PA 15213

J. Eng. Gas Turbines Power 108(4), 633-640 (Oct 01, 1986) (8 pages) doi:10.1115/1.3239958 History: Received January 17, 1986; Online October 15, 2009


A simple methodology to study the steady-state response of systems consisting of linear elastic substructures connected by friction interfaces is presented. Assuming that only the first Fourier components of the friction forces contribute significantly to the system response, the differential equations of motion are transformed into a system of algebraic complex equations. Then, an efficient linearized procedure to solve these equations for different normal loads in the friction interfaces is developed. As part of the solution procedure, a criterion to determine the slip-to-stuck transitions in the joint is proposed. Within the assumption that the response is harmonic, any desired accuracy can be obtained with this methodology. Selected numerical examples are presented to illustrate practical applications and the relevant features of the methodology. Due to its simplicity, this methodology is particularly appropriate for performing parametric studies that require solutions for many values of normal loads.

Copyright © 1986 by ASME
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