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Structural Engineering and Mechanics Volume 69, Number 1, January10 2019 , pages 21-31 DOI: https://doi.org/10.12989/sem.2019.69.1.021 |
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Weighted sum multi-objective optimization of skew composite laminates |
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Kanak Kalita, Uvaraja Ragavendran, Manickam Ramachandran and Akash Kumar Bhoi
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| Abstract | ||
| Optimizing composite structures to exploit their maximum potential is a realistic application with promising returns. In this research, simultaneous maximization of the fundamental frequency and frequency separation between the first two modes by optimizing the fiber angles is considered. A high-fidelity design optimization methodology is developed by combining the high-accuracy of finite element method with iterative improvement capability of metaheuristic algorithms. Three powerful nature-inspired optimization algorithms viz. a genetic algorithm (GA), a particle swarm optimization (PSO) variant and a cuckoo search (CS) variant are used. Advanced memetic features are incorporated in the PSO and CS to form their respective variants-RPSOLC (repulsive particle swarm optimization with local search and chaotic perturbation) and CHP (co-evolutionary host-parasite). A comprehensive set of benchmark solutions on several new problems are reported. Statistical tests and comprehensive assessment of the predicted results show CHP comprehensively outperforms RPSOLC and GA, while RPSOLC has a little superiority over GA. Extensive simulations show that the on repeated trials of the same experiment, CHP has very low variability. About 50% fewer variations are seen in RPSOLC as compared to GA on repeated trials. | ||
| Key Words | ||
| cuckoo search; finite element method; genetic algorithm; multiobjective optimization; particle swarm optimization | ||
| Address | ||
| Kanak Kalita: Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering, Science and Technology, Howrah, West Bengal 711103, India Uvaraja Ragavendran: Department of Electronics and Telecommunication Engineering, MPSTME SVKM'S Narsee Monjee Institute of Management Studies, Shirpur, Maharashtra 425405, India Manickam Ramachandran: Department of Mechanical Engineering, MPSTME SVKM'S Narsee Monjee Institute of Management Studies, Shirpur, Maharashtra 425405, India Akash Kumar Bhoi: Department of Electrical & Electronics Engineering, Sikkim Manipal Institute of Technology, Sikkim Manipal University, Majhitar, Sikkim 737136, India | ||