Numerical Simulation and Experimental Study on Energy Absorption of Foam-Filled Local Nanocrystallized Thin-Walled Tubes under Axial Crushing

Autor:	Wei Wang, Yajing Wang, Zhen Zhao, Zhenzhen Tong, Xinsheng Xu, Chee Wah Lim
Rok vydání:	2022
Předmět:	General Materials Science aluminium foam axial loading crashworthiness energy absorption local surface nanocrystallization thin-walled tube
Zdroj:	Materials; Volume 15; Issue 16; Pages: 5556
ISSN:	1996-1944
DOI:	10.3390/ma15165556
Popis:	A crashworthiness design of foam-filled local nanocrystallized thin-walled tubes (FLNTs) is proposed by using foam-filled structures and ultrasonic impact surface treatment. The crashworthiness and deformation modes of FLNTs are studied using an experiment and numerical analysis. A finite element numerical model of FLNTs is established, and the processing and test platform of FLNTs is set up to verify the numerical predication and analytical design. The results show that local nanocrystallization is an effective method to enhance crashworthiness for hexagonal FLNTs. The FLNTs with four circumferential continuous stripes of surface nanocrystallization exhibit a level of 47.12% higher specific energy absorption than the untreated tubes in numerical simulations for tubes with a 50% ratio of nanocrystallized area. Inspired by the strength mechanism, a novel nested foam-filled local surface nanocrystallization tube is further designed and studied in detail.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63588c2bd6503e5c2abe166c4fc5d6e8 https://doi.org/10.3390/ma15165556 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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