Volume 24, Issue 8 (August 2024)
Modares Mechanical Engineering 2024, 24(8): 511-522 |
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farmani S M, zia shamami M, alitavoli M. Experimental and analytical study of transverse displacement of plates in a circular sandwich structure with vertical metal tube cores under free blast load. Modares Mechanical Engineering 2024; 24 (8) :511-522
URL: http://mme.modares.ac.ir/article-15-75788-en.html
URL: http://mme.modares.ac.ir/article-15-75788-en.html
1- UNIVERSITY OF GUILAN , farmani.mahmood@yahoo.com
2- imam hossein university
3- university of guilan
2- imam hossein university
3- university of guilan
Abstract: (629 Views)
In this research, the amount of transverse displacement of circular sandwich panels under explosive loading was investigated using the experimental method, and then, by using the Bessel shape function and subtracting the plastic work of the core components and other deformations from the total kinetic energy given to the structure, the relation for the prediction of the transverse displacement of the plates is provided.The experimental tests are grouped by the construction of the sandwich structure, which is 1.2 and 2mm thick steel plating with aluminum tube cores with external diameters of 12 and 16 mm with a cross arrangement and vertically with the same height between the upper and lower plates of the structure. The results obtained from the methods of this research are expressed by presenting the maximum amount of transverse displacement in terms of the distance from the center of the structure and the amount of length change for each of the cores of the structure. It was found that by increasing the volume of the cores in the sandwich structure, the rigidity of the structure does not necessarily increase against a certain applied load. In the investigation of some structures, the effect of the amount of core collapse on the transverse displacement is almost equal to the effect of the thickness of the plate. The average difference of the results is less than 12 %
Keywords: Circular Sandwich Panel, Vertical Tubular Cores, Plastic Work, Analytical Model, Transverse Displacement, Free Explosion
Article Type: Original Research |
Subject:
Forming of metal sheets
Received: 2024/06/24 | Accepted: 2024/10/27 | Published: 2024/07/31
Received: 2024/06/24 | Accepted: 2024/10/27 | Published: 2024/07/31
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