Internally nested circular tube system subjected to lateral impact loading. (June 2015)

• Record Type: Journal Article
• Authors: Wang, Haibo; Yang, Jialing; Liu, Hua; Sun, Yuxin; Yu, T.X.
• Is Part Of: Thin-walled structures. Volume 91(2015)
• Page Start: 72
• Page End: 81
• Publication Date: 2015-06
• Subjects: Nested tube system -- Lateral impact -- Rigid plastic -- Large deformation; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2015.02.014
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: 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. Highlights: A theoretical model is proposed for nested tube systems under impact loading. The crushing behavior of nested tube systems is obtained. Force–time curves of nested tube systems exhibit a staircase pattern. Experimental and numerical results verify the accuracy of the theoretical model.