Comparing H2 and H∞ Algorithms for Optimum Design of Tuned Mass Dampers under Near-Fault and Far-Fault Earthquake Motions

Authors

  • Ali Kaveh
    Affiliation

    School of Civil Engineering, Iranian University of Science and Technology, Tehran, P.O. Box 16846–13114, Iran

  • Mazyar Fahimi Farzam
    Affiliation

    Department of Structural Engineering, University of Maragheh, Maragheh, P.O. Box: 83111–55181, Iran

  • Rasool Maroofiazar
    Affiliation

    Department of Mechanical Engineering, University of Maragheh, Maragheh, P.O. Box: 83111–55181, Iran

https://doi.org/10.3311/PPci.16389

Abstract

In this study, the robust optimum design of Tuned Mass Damper (TMD) is established. The H2 and H norm of roof displacement transfer function are implemented and compared as the objective functions under Near-Fault (NF) and Far-Fault (FF) earthquake motions. Additionally, the consequences of different characteristics of NF ground motions such as forward-directivity and fling-step are investigated on the behavior of a benchmark 10-story controlled structure. The Colliding Bodies Optimization (CBO) is employed as an optimization technique to calculate the optimum parameters of the TMDs. The resulting statistical assessment shows that the H objective function is rather superior to H2 objective function for optimum design of TMDs under NF and FF earthquake excitations. Finally, the robustness of the designed TMDs is evaluated under a large set of natural ground motions.

Keywords:

Tuned Mass Dampers, Near-Fault earthquake motions, robust design, optimum design, metaheuristic algorithm CBO

Published Online

2020-06-11

How to Cite

Kaveh, A., Farzam, M. F., Maroofiazar, R. “Comparing H2 and H∞ Algorithms for Optimum Design of Tuned Mass Dampers under Near-Fault and Far-Fault Earthquake Motions”, Periodica Polytechnica Civil Engineering, 64(3), pp. 828–844, 2020. https://doi.org/10.3311/PPci.16389

Issue

Section

Research Article