skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Power delivered to mechanical systems by random vibrations

Abstract

Here, this paper develops deformational response power descriptions of multiple degree-of-freedom systems due to stationary random vibration excitation. Two new concepts are developed. The deformational response power density (DRPD) can be computed when a structure's natural frequencies and modal masses are available. The DRPD shows the spectral content of the deformational power delivered to a specific structure by the stationary, random excitation. This function can be found through a weighted windowing of the power spectrum of the input acceleration excitation. Deformational response input power spectra (DRIPS), similar to the input energy spectrum and shock response spectrum, give the power delivered to single-degree-of-freedom systems as a function of natural frequency. It is shown that the DRIPS is simply a smoothed version of the power spectrum of the input acceleration excitation. Finally, the DRIPS gives rise to a useful power-based data smoothing operation.

Authors:
 [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Analytical Structural Dynamics
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1426936
Report Number(s):
SAND-2008-1328J
Journal ID: ISSN 1070-9622; 463353
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Shock and Vibration
Additional Journal Information:
Journal Volume: 16; Journal Issue: 3; Journal ID: ISSN 1070-9622
Publisher:
Hindawi
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 42 ENGINEERING; Power; energy; random vibration

Citation Formats

Edwards, Timothy S. Power delivered to mechanical systems by random vibrations. United States: N. p., 2008. Web. doi:10.3233/SAV-2009-0465.
Edwards, Timothy S. Power delivered to mechanical systems by random vibrations. United States. doi:10.3233/SAV-2009-0465.
Edwards, Timothy S. Thu . "Power delivered to mechanical systems by random vibrations". United States. doi:10.3233/SAV-2009-0465. https://www.osti.gov/servlets/purl/1426936.
@article{osti_1426936,
title = {Power delivered to mechanical systems by random vibrations},
author = {Edwards, Timothy S.},
abstractNote = {Here, this paper develops deformational response power descriptions of multiple degree-of-freedom systems due to stationary random vibration excitation. Two new concepts are developed. The deformational response power density (DRPD) can be computed when a structure's natural frequencies and modal masses are available. The DRPD shows the spectral content of the deformational power delivered to a specific structure by the stationary, random excitation. This function can be found through a weighted windowing of the power spectrum of the input acceleration excitation. Deformational response input power spectra (DRIPS), similar to the input energy spectrum and shock response spectrum, give the power delivered to single-degree-of-freedom systems as a function of natural frequency. It is shown that the DRIPS is simply a smoothed version of the power spectrum of the input acceleration excitation. Finally, the DRIPS gives rise to a useful power-based data smoothing operation.},
doi = {10.3233/SAV-2009-0465},
journal = {Shock and Vibration},
number = 3,
volume = 16,
place = {United States},
year = {2008},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share: