Document Type : Article
Department of Aerospace Engineering, Faculty of New Sciences and Technologies, University of Tehran, North Kargar Street, Tehran, Postcode: 1439957131, Iran
Department of Aerospace Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-8639, Iran
Department of Aerospace Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-8639, Iran.
Faculty of Engineering, Kharazmi University, Tehran, P.O. Box 15719-14911, Iran.
Department of Mechanical Engineering, Iran University of Science & Technology, Tehran, Iran
Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran
This paper deals with the dynamic response and energy absorption of foam-filled 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
have signicant 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.