Deformation Behavior of a Polygonal Tube under Oblique Impact Loading

Deformation Behavior of a Polygonal Tube under Oblique Impact Loading


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Abstract. Aluminum tubes are energy-efficient absorbing components and are widely used for framework and reinforcement materials of structures. The effects of the axial length and cross-sectional shape on the deformation behavior were investigated. Regarding the axial length, it has changed only to a certain length, and there are few studies on it. This paper deals with the influence of axial length. Also, when an impact is actually applied to the square tube, the impact in the oblique direction must also be taken into consideration. Therefore, the deformation behavior was analyzed by applying impact to the square tube from various angles other than the axial direction. An analysis of the dynamic deformation process of the polygonal tube was made using a finite element method. The results show that the load reached the peak immediately after the weight hit the square tube, then declined gently. The same tendency was obtained even if the axial length was changed. However, as the axial length became longer, the displacement taken to reach the peak load increased. As for the impact in the oblique direction, the peak load was small as compared with the axial direction. The deformation of square tube did not buckle in whole but only partially at any length.

Dynamic Deformation, Impact Load, Plastic Buckling, Numerical Analysis

Published online 7/30/2019, 6 pages
Copyright © 2019 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Yohei SHINSHI, Makoto MIYAZAKI, Keisuke YOKOYA, Deformation Behavior of a Polygonal Tube under Oblique Impact Loading, Materials Research Proceedings, Vol. 13, pp 41-46, 2019


The article was published as article 7 of the book Explosion Shock Waves and High Strain Rate Phenomena

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