An Improved Whale Algorithm and Its Application in Truss Optimization

The current Whale Optimization Algorithm (WOA) has several drawbacks, such as slow convergence, low solution accuracy and easy to fall into the local optimal solution. To overcome these drawbacks, an improved Whale Optimization Algorithm (IWOA) is proposed in this study. IWOA can enhance the global...

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Bibliographic Details
Published in:Journal of bionics engineering Vol. 18; no. 3; pp. 721 - 732
Main Authors: Jiang, Fengguo, Wang, Lutong, Bai, Lili
Format: Journal Article
Language:English
Published: Singapore Springer Singapore 01.05.2021
Subjects:
Artificial Intelligence
Biochemical Engineering
Bioinformatics
Biomaterials
Biomedical Engineering and Bioengineering
Biomedical Engineering/Biotechnology
Engineering
differential evolutionary algorithm
cloud theory
simulating optimization
bionic algorithm
improve whale optimization algorithm
ISSN:1672-6529, 2543-2141
Online Access:Get full text
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Summary:The current Whale Optimization Algorithm (WOA) has several drawbacks, such as slow convergence, low solution accuracy and easy to fall into the local optimal solution. To overcome these drawbacks, an improved Whale Optimization Algorithm (IWOA) is proposed in this study. IWOA can enhance the global search capability by two measures. First, the crossover and mutation operations in Differential Evolutionary algorithm (DE) are combined with the whale optimization algorithm. Second, the cloud adaptive inertia weight is introduced in the position update phase of WOA to divide the population into two subgroups, so as to balance the global search ability and local development ability. ANSYS and Matlab are used to establish the structure model. To demonstrate the application of the IWOA, truss structural optimizations on 52-bar plane truss and 25-bar space truss were performed, and the results were are compared with that obtained by other optimization algorithm. It is verified that, compared with WOA, the IWOA has higher efficiency, fast convergence speed, better solution accuracy and stability. So IWOA can be used in the optimization design of large truss structures.
ISSN:1672-6529
2543-2141
DOI:10.1007/s42235-021-0041-z