Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Development of Quantum-inspired Harmony Search Algorithm for Minimum Weight Design of Truss Structures

트러스 구조물의 최소중량설계를 위한 양자기반 화음탐색 알고리즘의 개발

  • 손수덕 (한국기술교육대학교 건축공학부) ;
  • 이승재 (한국기술교육대학교 건축공학부)
  • Received : 2015.08.06
  • Accepted : 2015.10.15
  • Published : 2015.10.30
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Abstract

With the development of quantum computer, the quantum-inspired search method applying the features of quantum mechanics, i.e. indetermination, superposition, entanglement, etc, and its application to engineering-problems have emerged as one of the most interesting research topics. Unlike the study of the quantum computer, the quantum-inspired search algorithms have been developed based on the application of the existed meta-heuristic algorithm and the information superimposed quantum-bit approached via through quantum gate. In this process, it appears that the balance between the two features of exploration and exploitation, and continually accumulates evolutionary information. Thus, this study is to propose a quantum-inspired harmony search algorithm and to solve the structural optimization problem by the algorithm. For the optimization, we suggest the mathematical modeling of the truss which is possible to minimum weight design. In its model, the cost function is minimum weight and constraint function consists of the stress. To trace the accumulative and convergence process of evolutionary information, 3-bar and 10-bar truss are chosen as the numerical examples, and their results are analyzed. The optimized design result in the numerical examples shows it has better result in minimum weight design, compared to those of the other search methods. It is also observed that more accurate optional values can be acquired as the result by accumulating evolutionary information.

Keywords

Acknowledgement

Supported by : 한국연구재단

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