Multimaterial layout optimization of truss structures via an improved particle swarm optimization algorithm
| Autor: | Han Zhengtong, Gu Zhengqi, Chen Wanglin, Ma Xiaokui |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Computer science
Mechanical Engineering Reliability (computer networking) Truss Particle swarm optimization 02 engineering and technology Division (mathematics) 01 natural sciences Computer Science Applications 010101 applied mathematics Set (abstract data type) 020303 mechanical engineering & transports 0203 mechanical engineering Modeling and Simulation Gradient estimation General Materials Science 0101 mathematics Algorithm Civil and Structural Engineering |
| Zdroj: | Computers & Structures. 222:10-24 |
| ISSN: | 0045-7949 |
| DOI: | 10.1016/j.compstruc.2019.06.004 |
| Popis: | This paper presents an extension of the basic truss layout optimization, in which the use of various materials is considered. A novel improved version of the particle swarm optimization algorithm, namely, GEMPSO, is developed for solving this problem. The enhancement is realized by introducing two core strategies: gradient estimation and multiple subpopulation division. The efficiency and reliability of the proposed improvements are demonstrated on a set of six test problems and three truss structures. Two multimaterial layout optimizations of truss structures are performed. The numerical results reveal that the appropriate partial use of expensive stronger materials can reduce the overall cost of multimaterial structures. |
| Databáze: | OpenAIRE |
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