Shape optimization of metallic yielding devices for passive mitigation of seismic energy

Article


Ghabraie, Kazem, Chan, Ricky, Huang, Xiaodong and Xie, Yi Min. 2010. "Shape optimization of metallic yielding devices for passive mitigation of seismic energy." Engineering Structures. 32 (8), pp. 2258-2267. https://doi.org/10.1016/j.engstruct.2010.03.028
Article Title

Shape optimization of metallic yielding devices for passive mitigation of seismic energy

ERA Journal ID4188
Article CategoryArticle
AuthorsGhabraie, Kazem (Author), Chan, Ricky (Author), Huang, Xiaodong (Author) and Xie, Yi Min (Author)
Journal TitleEngineering Structures
Journal Citation32 (8), pp. 2258-2267
Number of Pages10
Year2010
PublisherElsevier
Place of PublicationOxford, United Kingdom
ISSN0141-0296
1873-7323
Digital Object Identifier (DOI)https://doi.org/10.1016/j.engstruct.2010.03.028
Abstract

Bi-directional Evolutionary Structural Optimization (BESO) is a well established topology optimization technique. This method is used in this paper to optimize the shape of a passive energy dissipater designed for earthquake risk mitigation. A previously proposed shape design of a steel slit damper (SSD) device is taken as the initial design and its shape is optimized using a slightly modified BESO algorithm. Some restrictions are imposed to maintain simplicity and to reduce fabrication cost. The optimized shape shows increased energy dissipation capacity and even stress distribution. Experimental verification has been carried out and proved that the optimized shape is more resistant to low-cycle fatigue.

Keywordsshape optimization; energy dissipation; bi-directional evolutionary structural optimization; metallic damper; cyclic tests; earthquake resistant structure
ANZSRC Field of Research 2020400510. Structural engineering
400506. Earthquake engineering
490304. Optimisation
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsDepartment of Agricultural, Civil and Environmental Engineering
Royal Melbourne Institute of Technology (RMIT)
Institution of OriginUniversity of Southern Queensland
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