Additive manufacturing of miniature marine structures for crashworthiness verification: Scaling technique and experimental tests

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-07-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
18
Series
Marine Structures, Volume 72
Abstract
Undoubtedly, the main advantage of the additive manufacture technology is to allow building miniature structural parts with a large degree of complexity such as to replicate structural details of real-scale marine structures. This work presents a new technique for reproducing the structural response of large-scale thin-walled metallic structures when subjected to crushing loadings by using scaled-down additive manufactured models. This technique couples scaling laws for strain rate sensitive materials and a thickness distortion technique based on the structural collapse mode. In order to validate this coupled technique, the structural response of a large-scale crushing test of a web girder structure was experimentally replicated by using a 1/40 scale reduction model. The results and conclusions summarize the prospects and limitations of additive manufacturing of miniature complex marine structures for structural purposes and crashworthiness verification.
Description
Keywords
3d printing, Experimental test, Marine structures, Powder bed fusion, Similarity, Web girder
Other note
Citation
Calle Gonzales, M, Salmi, M, Mazzariol, L M, Alves, M & Kujala, P 2020, ' Additive manufacturing of miniature marine structures for crashworthiness verification : Scaling technique and experimental tests ', Marine Structures, vol. 72, 102764 . https://doi.org/10.1016/j.marstruc.2020.102764