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The Effects of Gravity on Structural Vibration

[+] Author Affiliations
J. William Jones

J. W. Jones Consulting Engineers, Huntington Beach, CA

Robert E. Nickell

Applied Science & Technology, San Diego, CA

William Bulat

ANSYS, Inc., Encinitas, CA

Paper No. PVP2013-97571, pp. V008T08A044; 8 pages
  • ASME 2013 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Paris, France, July 14–18, 2013
  • Conference Sponsors: Pressure Vessels and Piping Division, Nondestructive Evaluation Engineering Division
  • ISBN: 978-0-7918-5574-4
  • Copyright © 2013 by ASME


A simplified method for incorporating gravitational effects into the analysis of structural vibrations, and for determining the relative importance of those effects, has been developed. The nonlinear effect has been simplified by incorporating only the first-order gravitational effects into the structural stiffness formulation, and demonstrating through both analysis and experiment that the first-order stiffness additions are sufficient to accurately characterize the gravitational effects in most cases. The simplified formulation also provides a convenient method for determining the conditions under which the effects of gravity should be considered.

Copyright © 2013 by ASME



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