Bending response of carbon fiber composite sandwich beams with three dimensional honeycomb cores

2014 ◽  
Vol 108 ◽  
pp. 234-242 ◽  
Author(s):  
Jian Xiong ◽  
Li Ma ◽  
Ariel Stocchi ◽  
Jinshui Yang ◽  
Linzhi Wu ◽  
...  
2011 ◽  
Vol 78 (3) ◽  
Author(s):  
B. P. Russell ◽  
T. Liu ◽  
N. A. Fleck ◽  
V. S. Deshpande

Sandwich beams comprising identical face sheets and a square honeycomb core were manufactured from carbon fiber composite sheets. Analytical expressions were derived for four competing collapse mechanisms of simply supported and clamped sandwich beams in three-point bending: core shear, face microbuckling, face wrinkling, and indentation. Selected geometries of sandwich beams were tested to illustrate these collapse modes, with good agreement between analytic predictions and measurements of the failure load. Finite element (FE) simulations of the three-point bending responses of these beams were also conducted by constructing a FE model by laying up unidirectional plies in appropriate orientations. The initiation and growth of damage in the laminates were included in the FE calculations. With this embellishment, the FE model was able to predict the measured load versus displacement response and the failure sequence in each of the composite beams.


2019 ◽  
Vol 174 ◽  
pp. 106945 ◽  
Author(s):  
Ho-Jin Kim ◽  
Hyung-Soo Kim ◽  
Gil-Yong Lee ◽  
Min-Soo Kim ◽  
Soo-Hong Min ◽  
...  

2010 ◽  
Vol 29-32 ◽  
pp. 2256-2261 ◽  
Author(s):  
Jun Li ◽  
Ba Ta Xi

This note presents the main process of optimization design of foam core/carbon fiber composite sandwich which primarily designed for UAV wing beams. During the actual application, the original design provided excessive structural strength and it has certain capacity to be optimized. So the weight of structure can be reduced under the premise of meet the strength requirement. In order to characterize fully the complex mechanical behavior of such a highly heterogeneous material and find the ultimate strength of this structure, MSC.Patran/Nastran has be applied on analysis of this composite sandwich structure. Base on the result of the numerical simulations, the best combination of composite laminated and the material layer thickness have be determined, and the beams structure of the lightweight has be designed ultimately.


2016 ◽  
Vol 156 ◽  
pp. 307-319 ◽  
Author(s):  
Jian Xiong ◽  
Lina Feng ◽  
Ranajay Ghosh ◽  
Huaping Wu ◽  
Linzhi Wu ◽  
...  

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