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Evaluation of seismic energy in structures

Evaluation of seismic energy in structures Research engineers use two types of energy equations to study single‐degree‐of‐freedom (SDOF) systems subject to earthquake induced ground motions. The first method uses an absolute energy formulation; the second method uses a relative energy formulation. While the relative energy formulation has been used in the majority of previous investigations, this study shows that the absolute energy equation is physically more meaningful. For a given ductility ratio, the input energy demands calculated by both methods are significantly different for both the short and long period ranges although the results are similar in the intermediate period range. A comparison between the analytically predicted absolute input energy of a SDOF system with the experimentally measured input energy of a six‐storey braced steel frame shows good correlation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Earthquake Engineering and Structural Dynamics Wiley

Evaluation of seismic energy in structures

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References (10)

Publisher
Wiley
Copyright
Copyright © 1990 John Wiley & Sons, Ltd
ISSN
0098-8847
eISSN
1096-9845
DOI
10.1002/eqe.4290190108
Publisher site
See Article on Publisher Site

Abstract

Research engineers use two types of energy equations to study single‐degree‐of‐freedom (SDOF) systems subject to earthquake induced ground motions. The first method uses an absolute energy formulation; the second method uses a relative energy formulation. While the relative energy formulation has been used in the majority of previous investigations, this study shows that the absolute energy equation is physically more meaningful. For a given ductility ratio, the input energy demands calculated by both methods are significantly different for both the short and long period ranges although the results are similar in the intermediate period range. A comparison between the analytically predicted absolute input energy of a SDOF system with the experimentally measured input energy of a six‐storey braced steel frame shows good correlation.

Journal

Earthquake Engineering and Structural Dynamics – Wiley

Published: Jan 1, 1990

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