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Mohammadi Hooyeh, H., Naddaf Oskouei, A., Mirzababaie Mostofi, T., Vahedi, K. (2023). Experimental and Numerical Investigation of Trapezoidal Corrugated Core Sandwich Panels Under Oblique Blast Loading. Electronic and Cyber Defense, 19(2), 11-23.
Hadi Mohammadi Hooyeh; Alireza Naddaf Oskouei; Tohid Mirzababaie Mostofi; Khodadad Vahedi. "Experimental and Numerical Investigation of Trapezoidal Corrugated Core Sandwich Panels Under Oblique Blast Loading". Electronic and Cyber Defense, 19, 2, 2023, 11-23.
Mohammadi Hooyeh, H., Naddaf Oskouei, A., Mirzababaie Mostofi, T., Vahedi, K. (2023). 'Experimental and Numerical Investigation of Trapezoidal Corrugated Core Sandwich Panels Under Oblique Blast Loading', Electronic and Cyber Defense, 19(2), pp. 11-23.
Mohammadi Hooyeh, H., Naddaf Oskouei, A., Mirzababaie Mostofi, T., Vahedi, K. Experimental and Numerical Investigation of Trapezoidal Corrugated Core Sandwich Panels Under Oblique Blast Loading. Electronic and Cyber Defense, 2023; 19(2): 11-23.

Experimental and Numerical Investigation of Trapezoidal Corrugated Core Sandwich Panels Under Oblique Blast Loading

مکانیک هوافضا
Article 2, Volume 19, Issue 2 - Serial Number 72, September 2023, Pages 11-23    PDF (994.53 K)
Document Type: Impact Mechanics
Authors
Hadi Mohammadi Hooyeh1; Alireza Naddaf Oskouei* 2; Tohid Mirzababaie Mostofi3; Khodadad Vahedi4
1Ph.D. Student, Faculty of Engineering, Imam Hossein University, Tehran, Iran
2Corresponding author: Associate Professor, Faculty of Engineering, Imam Hossein University, Tehran, Iran
3Assistant Professor, Faculty of Mechanical Engineering, University of Eyvanekey, Eyvanekey, Iran
4Professor, Faculty of Engineering, Imam Hossein University, Tehran, Iran
Receive Date: 27 September 2022,  Revise Date: 09 October 2022,  Accept Date: 04 December 2022 
Abstract
This study deals with experimental and numerical response of trapezoidal corrugated core sandwich panels made of ST37 subjected to oblique blast loading. Sandwich target plate is 270*270 mm that consist of front/ back plate with 1 mm and trapezoidal corrugated core with 0.7mm thickness. The experimental explosive was done at the end of four different blast tube with angle of 0°, 15°, 30° and 45°respect to sandwich target plate. The mass of explosive (C4) was 10g and the stand-off distance was constant at 300 mm. The results of numerical simulation, obtained using coupled Eulerian–Lagrangian (CEL) model at commercial ABAQUS/Explicit software. The results show good agreement between the numerical and the experimental values. The results show that with increasing angle of tilt from 0° up to 45°, the maximum displacement decreases. At the higher masses of explosive, this reduction in deformation will be greater than the lower masses of explosive. Also, due to directing a large part of the blast wave to out of the blast tube, the amount of plastic dissipation energy at the angle of 45 degrees is significantly reduced compared to other angles.

Highlights
  • With increasing the angle of the explosive charge deformation of the sandwich panel decreases.
  • Plastic energy of the plate for the mass of the charge with an angle of 45 degrees is significantly reduced compared to other angles.
Keywords
Corrugated core; Sandwich panels; Oblique blast loading; Coupled Eulerian– Lagrangian method
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