ASCE India Conference 2017
Topology Optimization of Diagrid Structures Using Differential Evolution
Publication: Urbanization Challenges in Emerging Economies: Resilience and Sustainability of Infrastructure
ABSTRACT
In the recent past—almost since a decade, structures which make use of diagrids are being increasingly constructed owing to their high structural efficiency especially in the case of lateral loads. This research work focuses on the topology optimization of a diagrid frame with respect to maximization of its natural frequency and minimization of its weight using differential evolution. The optimization process is carried out considering both the objective functions separately and also together as multi-objective optimization. The design parameters considered are the diagrid angle, thickness, and width of the diagrid sections used. From single objective optimization the optimum diagrid angles are obtained for three different cases of wind speeds such as 30 m/s, 44 m/s, and 55 m/s. Also the optimization problem aimed towards minimization of weight yields useful information regarding the variation profile of diagrid cross-sections with height. Further pareto-optimal sets are obtained using multi objective optimization.
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Information & Authors
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Published In
Urbanization Challenges in Emerging Economies: Resilience and Sustainability of Infrastructure
Pages: 632 - 644
Editors: Udai P. Singh and G. L. Sivakumar Babu, Indian Institute of Science
ISBN (Online): 978-0-7844-8203-2
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Dec 13, 2018
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