Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load

Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load

Triangular grid reinforced by carbon fiber/epoxy (CF/EP) was designed and manufactured. The sandwich structure was prepared by gluing the core and composite skins. The mechanical properties of the sandwich structure were investigated by the finite element analysis (FEA) and three-point bending metho...

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Main Authors: Cui Xu, Huang Yanjiao, Wang Shou, Lu Chun, Fang Luping
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:International Journal of Aerospace Engineering
Online Access:http://dx.doi.org/10.1155/2015/723487
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spelling doaj-f8bc93234f8a4804851e31842a572d012020-11-25T00:54:41ZengHindawi LimitedInternational Journal of Aerospace Engineering1687-59661687-59742015-01-01201510.1155/2015/723487723487Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending LoadCui Xu0Huang Yanjiao1Wang Shou2Lu Chun3Fang Luping4Liaoning Key Laboratory of General Aviation and Liaoning Key Laboratory of Composite Manufacture technology, Shenyang Aerospace University, Shenyang 110136, ChinaLiaoning Key Laboratory of General Aviation and Liaoning Key Laboratory of Composite Manufacture technology, Shenyang Aerospace University, Shenyang 110136, ChinaLiaoning Key Laboratory of General Aviation and Liaoning Key Laboratory of Composite Manufacture technology, Shenyang Aerospace University, Shenyang 110136, ChinaLiaoning Key Laboratory of General Aviation and Liaoning Key Laboratory of Composite Manufacture technology, Shenyang Aerospace University, Shenyang 110136, ChinaLiaoning Key Laboratory of General Aviation and Liaoning Key Laboratory of Composite Manufacture technology, Shenyang Aerospace University, Shenyang 110136, ChinaTriangular grid reinforced by carbon fiber/epoxy (CF/EP) was designed and manufactured. The sandwich structure was prepared by gluing the core and composite skins. The mechanical properties of the sandwich structure were investigated by the finite element analysis (FEA) and three-point bending methods. The calculated bending stiffness and core shear stress were compared to the characteristics of a honeycomb sandwich structure. The results indicated that the triangular core ultimately failed under a bending load of 11000 N; the principal stress concentration was located at the loading region; and the cracks occurred on the interface top skin and triangular core. In addition, the ultimate stress bearing of the sandwich structure was 8828 N. The experimental results showed that the carbon fiber reinforced triangular grid was much stiffer and stronger than the honeycomb structure.http://dx.doi.org/10.1155/2015/723487
collection DOAJ
language English
format Article
sources DOAJ
author Cui Xu
Huang Yanjiao
Wang Shou
Lu Chun
Fang Luping
spellingShingle Cui Xu
Huang Yanjiao
Wang Shou
Lu Chun
Fang Luping
Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load
International Journal of Aerospace Engineering
author_facet Cui Xu
Huang Yanjiao
Wang Shou
Lu Chun
Fang Luping
author_sort Cui Xu
title Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load
title_short Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load
title_full Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load
title_fullStr Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load
title_full_unstemmed Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load
title_sort stress distribution on sandwich structure with triangular grid cores suffered from bending load
publisher Hindawi Limited
series International Journal of Aerospace Engineering
issn 1687-5966
1687-5974
publishDate 2015-01-01
description Triangular grid reinforced by carbon fiber/epoxy (CF/EP) was designed and manufactured. The sandwich structure was prepared by gluing the core and composite skins. The mechanical properties of the sandwich structure were investigated by the finite element analysis (FEA) and three-point bending methods. The calculated bending stiffness and core shear stress were compared to the characteristics of a honeycomb sandwich structure. The results indicated that the triangular core ultimately failed under a bending load of 11000 N; the principal stress concentration was located at the loading region; and the cracks occurred on the interface top skin and triangular core. In addition, the ultimate stress bearing of the sandwich structure was 8828 N. The experimental results showed that the carbon fiber reinforced triangular grid was much stiffer and stronger than the honeycomb structure.
url http://dx.doi.org/10.1155/2015/723487
work_keys_str_mv AT cuixu stressdistributiononsandwichstructurewithtriangulargridcoressufferedfrombendingload
AT huangyanjiao stressdistributiononsandwichstructurewithtriangulargridcoressufferedfrombendingload
AT wangshou stressdistributiononsandwichstructurewithtriangulargridcoressufferedfrombendingload
AT luchun stressdistributiononsandwichstructurewithtriangulargridcoressufferedfrombendingload
AT fangluping stressdistributiononsandwichstructurewithtriangulargridcoressufferedfrombendingload
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