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Earthquakes and Structures
  Volume 8, Number 3, March 2015, pages 639-663
DOI: http://dx.doi.org/10.12989/eas.2015.8.3.639
 


Reduced record method for efficient time history dynamic analysis and optimal design
A. Kaveh, A.A. Aghakouchak and P. Zakian

 
Abstract     [Full Text]
    Time history dynamic structural analysis is a time consuming procedure when used for largescale structures or iterative analysis in structural optimization. This article proposes a new methodology for approximate prediction of extremum point of the response history via wavelets. The method changes original record into a reduced record, decreasing the computational time of the analysis. This reduced record can be utilized in iterative structural dynamic analysis of optimization and hence significantly reduces the overall computational effort. Design examples are included to demonstrate the capability and efficiency of the Reduced Record Method (RRM) when utilized in optimal design of frame structures using metaheuristic algorithms.
 
Key Words
    seismic loading; time history dynamic analysis; structural optimization; wavelets; computational time reduction; improved harmony search (IHS)
 
Address
A. Kaveh: Department of Civil Engineering, Iran University of Science and Technology, Narmak, Iran

A.A. Aghakouchak and P. Zakian: Department of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran
 

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