Hybridization of Harmony Search and Ant Colony Optimization for optimal locating of structural dampers

Authors:
Fereidoun Amini;Pedram Ghaderi
Affiliations:
School of Civil Engineering, Iran University of Science and Technology, P.O. Box 16765-163, Narmak, Tehran, Iran;School of Civil Engineering, Iran University of Science and Technology, P.O. Box 16765-163, Narmak, Tehran, Iran
Venue:
Applied Soft Computing
Year:
2013

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Abstract

This paper proposes a hybrid algorithm to find optimal locations for dampers within a structural system. In this approach Harmony Search is augmented by a probability mass function which utilizes two concepts borrowed from Ant Colony Optimization algorithm: pheromone and heuristic values. The former is a dynamic weight factor assigned to each solution component and the latter is a constant one defined based on modal analysis of the structural system. Provided numerical examples show that this hybrid search scheme improves the convergence rate such that the algorithm finds qualified solutions in fewer number of iterations.