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Model updating using genetic algorithms with sequential niche technique
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DOI：10.1016/j.engstruct.2016.04.028.png)
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Abstract
En 中文
Structural model updating is an optimisation problem where parameters that minimise the errors between the model and the actual structure are sought. However, multiple solutions may be present. Global optimisation algorithms are efficient optimisation tools but are not fully immune to missing the global minimum. To increase the chance of finding the global minimum, a combination of genetic algorithm with sequential niche technique is proposed. The method performs systematic search to find multiple minima and facilitates detecting the minimum that best describes the system. The technique is applied to experimental data from a simple laboratory structure and a full-scale pedestrian cable-stayed bridge, and also tested on a deceptive problem using the numerical model of a space frame. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords:
Cable-stayed bridge
Deceptive problem
Global optimisation algorithms
Inverse problem
Model updating
Multiple minima
Genetic algorithm
Sequential niche technique
Structural optimisation
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