Gradient based optimization of added viscous damping in seismic applications

Oren Lavan, Robert Levy

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a consistent approach for the optimal seismic design of added viscous damping in framed structures. The approach presented is appropriate for use in elastic as well as yielding frames. The sum of added damping is chosen as the objective function and the performance of the structure, under the excitation of an ensemble of deterministic ground motion records, is constrained. The performance of the structure is measured by the maximal inter-story drifts in both the linear and nonlinear cases. The nonlinear case however, uses an additional performance measure of the normalized hysteretic energy of the plastic hinges Gradients of the performance measures are first derived to enable the use of an appropriate first order optimization scheme. Moreover, an efficient selection scheme enables the consideration of only a few records rather than the whole ensemble, hence making the optimization process efficient in terms of the computational effort.

Original languageEnglish
Title of host publicationAdvances in Engineering Structures, Mechanics and Construction
Subtitle of host publicationProceedings o an International Conference on Advances in Engineering Structures, Mechanics and Construction, Held in Waterloo, Ontar
Pages663-671
Number of pages9
DOIs
StatePublished - 1 Dec 2006
Externally publishedYes

Publication series

NameSolid Mechanics and its Applications
Volume140
ISSN (Print)0925-0042

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanics of Materials
  • Mechanical Engineering

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