Volume 20, Issue 11 (October 2020)                   Modares Mechanical Engineering 2020, 20(11): 2671-2678 | Back to browse issues page

‎ 20.1001.1.10275940.1399.20.11.17.8

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Hatampour M, Hosseini R, Hasanzadeh M, Vahedi K. Experimental Investigation and Regression Analysis on Plastic Deformation of Sandwich Panels made of Reinforced Polymeric Foam under Explosive Loading. Modares Mechanical Engineering 2020; 20 (11) :2671-2678
URL: http://mme.modares.ac.ir/article-15-46948-en.html
Experimental Investigation and Regression Analysis on Plastic Deformation of Sandwich Panels made of Reinforced Polymeric Foam under Explosive Loading
Majid Hatampour1 , Rouhollah Hosseini1 , Mahdi Hasanzadeh * 2, Kh. Vahedi1
1- Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran
2- Department of Textile Engineering, Yazd University, Yazd, Iran , m.hasanzadeh@yazd.ac.ir
Abstract:   (1511 Views)
In this paper, experimental investigation and regression analysis on plastic deformation of polyurethane composite sandwich panels reinforced with nanoclay under blast loading is investigated. For this purpose, polyurethane sandwich panels with different percentages of nanoclay and in different densities were prepared. The mechanical properties of nanoclay-reinforced foams were studied by tensile-compression test. Explosive shock tube device and C4 explosive material were used for explosive loading. Then, in order to investigate the effect of significant parameters such as the percentage of nanoclay and density of polyurethane foam on the displacement of composite sandwich panels and optimizing them for minimum deformation, the response surface methodology was used. The results obtained from the regression model at 95% confidence level indicate a very good agreement between the experimental results and the values ​​predicted by the model. The high value of the correlation coefficient between the studied parameters and the amount of plastic deformation of the sandwich panel (R2 = 99%) indicate that the proposed model has a higher accuracy. Finally, the optimal conditions for achieving the minimum displacement of composite sandwich panels were determined as 1.57% nanoclay content and foam density of 130 kg/m3.
Keywords: Polyurethane foam, Nanoclay, Explosive loading, Optimization, Response surface methodology
Full-Text [PDF 755 kb]   (998 Downloads)    
Article Type: Original Research | Subject: Impact Mechanics
Received: 2020/10/19 | Accepted: 2020/11/7 | Published: 2020/07/5
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