期刊
THIN-WALLED STRUCTURES
卷 91, 期 -, 页码 72-81出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2015.02.014
关键词
Nested tube system; Lateral impact; Rigid plastic; Large deformation
资金
- National Natural Science Foundation of China [11032001]
The paper presents a theoretical, numerical and experimental investigation into the dynamic behavior of internally nested tube systems subjected to lateral impact loading. A theoretical model based on rigid, perfectly plastic material idealization is proposed, in which the effects of strain-hardening and strain-rate are considered. The analytical solutions to the crushing behavior of nested tube systems are obtained. Numerical simulations based on finite element method using the explicit code LS-DYNA and experiments are performed and the response of force and displacement versus time impacted by a drop hammer are compared with the theoretical predictions, resulting in good agreement. (C) 2015 Elsevier Ltd. All rights reserved.
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