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Compression behaviour of TPMS-filled stainless steel tubes
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SYSNO ASEP 0559566 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Compression behaviour of TPMS-filled stainless steel tubes Author(s) Novak, N. (SI)
Kytýř, Daniel (UTAM-F) SAI, RID, ORCID
Rada, Václav (UTAM-F) ORCID, SAI, RID
Doktor, T. (CZ)
Al-Ketan, O. (AE)
Rowshan, R. (AE)
Vesenjak, M. (SI)
Ren, Z. (SI)Number of authors 8 Article number 143680 Source Title Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
Roč. 852, September (2022)Number of pages 10 s. Publication form Print - P Language eng - English Country CH - Switzerland Keywords cellular structure ; triply periodical minimal surface ; TPMS ; TPMS-filled tube ; compressive loading ; experimental testing ; computational modelling ; homogenised core OECD category Materials engineering Method of publishing Open access Institutional support UTAM-F - RVO:68378297 UT WOS 000842991400001 EID SCOPUS 85135785953 DOI https://doi.org/10.1016/j.msea.2022.143680 Annotation One of the most promising options for future crashworthiness applications is thin-walled tubes filled with various cellular materials (e.g. metal foam). Of higher interest are the shell-based lattices, which have lately gained popularity due to their superior qualities over strut-based lattices. In this work, we investigate the mechanical response of foam-filled tubes where the tube's core was represented by Triply Periodic Minimal Surface (TPMS) diamond lattices. Samples made of stainless steel 316L comprising the diamond lattice core, empty tubes, and in-situ TPMS-filled tubes were additively manufactured and mechanically tested under compressive loading. As-fabricated welded tubes and ex-situ TPMS-filled tubes were also analysed and compared. Under the axial loading, the ex-situ and in-situ TPMS-filled tubes showed very similar behaviour. Enhanced energy absorption up to 21% and 44% compared to the sum of empty tubes and the core responses was noted. The energy absorption enhancement of 12% in the case of transversal loading is limited to in-situ TPMS-filled tubes, where the connection between the tube and core prevents the tube's walls from buckling. Computational models with homogenised core were developed and validated based on the experimental data. These straightforward, fast, and accurate computational models can be efficiently used for large-scale real-life applications, e.g. crash and impact. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2023 Electronic address https://doi.org/10.1016/j.msea.2022.143680
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