Table of Contents Author Guidelines Submit a Manuscript
Shock and Vibration
Volume 2, Issue 2, Pages 111-118
http://dx.doi.org/10.3233/SAV-1995-2202

Random Vibration of Space Shuttle Weather Protection Systems

Isaac Elishakoff,1 Menahem Baruch,2 Liping Zhu,3 and Raoul Caimi4

1Department of Mechanical Engineering, Florida Atlantic University, Boca Raton, FL 33431-0991, USA
2Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
3Department of Mechanical Engineering, Florida Atlantic University, Boca Raton, FL 33431-0991, USA
4NASA Kennedy Space Center, Titusville, FL 32899, USA

Received 1 June 1994; Accepted 22 September 1994

Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The article deals with random vibrations of the space shuttle weather protection systems. The excitation model represents a fit to the measured experimental data. The cross-spectral density is given as a convex combination of three exponential functions. It is shown that for the type of loading considered, the Bernoulli-Euler theory cannot be used as a simplified approach, and the structure will be more properly modeled as a Timoshenko beam. Use of the simple Bernoulli-Euler theory may result in an error of about 50% in determining the mean-square value of the bending moment in the weather protection system.