Sharif University of Technology Scientia Iranica 1026-3098 24 4 2017 08 01 Impact crushing behavior of foam-filled paraboloid shells using numerical and experimental methods 1912 1921 4282 10.24200/sci.2017.4282 EN Sh. Shams Department of Aerospace Engineering, Faculty of New Sciences and Technologies, University of Tehran, North Kargar Street, Tehran, Postcode: 1439957131, Iran H. Haddadpour Department of Aerospace Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-8639, Iran H. Tuzandejani Department of Aerospace Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-8639, Iran. S.A.A. Hosseini Faculty of Engineering, Kharazmi University, Tehran, P.O. Box 15719-14911, Iran. M. Vatanparast Department of Mechanical Engineering, Iran University of Science & Technology, Tehran, Iran S. Zahab Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran Journal Article 2015 03 04 This paper deals with the dynamic response and energy absorption of foam-filled aluminum parabolic tubes under axial impact loading. The numerical crush analysis of empty and foam-lled tubes is performed using non-linear nite element techniques. The effects of geometrical (wall thickness) and material parameters (foam density and Young's relaxation modulus) on the impact response and energy absorption capacity of foam-filled tube are investigated using numerical models. The results show that the foam properties<br />have signicant eect on the crushing behavior, force and impact acceleration magnitude, and energy absorption capacity. Furthermore, there is a critical foam density beyond which the structure loses its energy absorption performance. Experimental results acquired from a test setup are used for validating the Finite-Element Analysis (FEA). There is good agreement between numerical and experimental results. https://scientiairanica.sharif.edu/article_4282_9f3f75ae8d43bb025e57aa8c8e473815.pdf