Volume 21, Issue 10 (October 2021)
Modares Mechanical Engineering 2021, 21(10): 673-683 |
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Ghamarizadeh M, Khodarahmi H, Mirzababaie Mostofi ع. Dynamic response of circular metal sandwich panels with tubular cores under blast load. Modares Mechanical Engineering 2021; 21 (10) :673-683
URL: http://mme.modares.ac.ir/article-15-51911-en.html
URL: http://mme.modares.ac.ir/article-15-51911-en.html
1- PhD student, Department of Mechanical Engineering, Faculty of Engineering, Imam Hossein Comprehensive University, Tehran, Iran.**Instructor, Imam Hossein University For Training Officers & Guards, Tehran, Iran.
2- Professor, Department of Mechanical Engineering, Faculty of Engineering, Imam Hossein Comprehensive University, Tehran, Iran. ,hkhdrhmi@ihu.ac.ir
3- Assistant Professor, Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Eyvanekey, Eyvanekey, Iran.
2- Professor, Department of Mechanical Engineering, Faculty of Engineering, Imam Hossein Comprehensive University, Tehran, Iran. ,
3- Assistant Professor, Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Eyvanekey, Eyvanekey, Iran.
Abstract: (1793 Views)
Sandwich panels which can be used as an explosion shield are important structures for absorbing explosion energy. Crushing and plastic deformation of the core with the plastic bending of the faces are the main factors in absorbing the explosion energy in this sandwich panel. Structural components undergo permanent deformation after explosion and energy absorption. In this paper, the energy absorption of the structure and the deformation of circular metal sandwich panels with tubular core under explosion load have been investigated analytically, numerically and experimentally. The tubes are arranged radially and symmetrically in the core constructions. The experiment have been performed by making sandwich panels under free blast load in order to evaluate and validate analytical and numerical results. The analytical solution is performed using the energy method by balancing the kinetic energy and the plastic work which is done by the different components of the sandwich panels. Numerical solution is performed in ABAQUS finite element software and the pressure function is generated by CONWEP method. The amount of energy absorbed by the structure and different parts of it is obtained. There is good agreement between the results in different ways.
Article Type: Original Research |
Subject:
Impact Mechanics
Received: 2021/04/23 | Accepted: 2021/05/15 | Published: 2021/10/2
Received: 2021/04/23 | Accepted: 2021/05/15 | Published: 2021/10/2
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