Anisotropic Swelling in Fiber-reinforced Hydrogels: An Incremental Finite Element Method and Its Applications in Design of Bilayer Structures

2016 ◽  
Author(s):  
Yin Liu ◽  
Hongwu Zhang ◽  
Jianhua Wang ◽  
Yonggang Zheng
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fiber Reinforced ◽  
Element Method

Mechanical Behavior of SiC Fiber Reinforced Al Matrix Composites: A Study Based on Finite Element Method

2011 ◽  
Vol 239-242 ◽  
pp. 2785-2789
Author(s):  
Chao Sun ◽  
Min Song ◽  
Ru Juan Shen ◽  
Yong Du
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aspect Ratio ◽  
Plastic Region ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber ◽  
Al Matrix Composites ◽  
Al Matrix ◽  
Element Method

The effects of SiC fiber shape, aspect ratio and loading direction on the deformation behavior of SiC fiber reinforced Al matrix composites were studied by finite element method using axisymmetric unit cell model. The results showed that the addition of reinforcements will cause constraint on the plastic flow of ductile matrix, and thus result in no-uniform stress distribution. The reinforcement shape has a pronounced effect on the overall plastic deformation of the metal matrix composites. The loading condition will cause different failure mechanisms of composites. Under tensile loading, the stress-bearing ability in the plastic region is increased with the fiber aspect ratio due to the increase in the interface between the reinforcement and matrix and the decrease in the inter-particle space.

Micromechanical analysis of loop-formed fiber-reinforced soil composite

2013 ◽  
Vol 44 (3) ◽  
pp. 418-433
Author(s):  
Seyed Mahdi Hejazi ◽  
Seyed Mahdi Abtahi ◽  
Mohammad Sheikhzadeh ◽  
Amir Mostashfi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Reinforced Soil ◽  
Soil Reinforcement ◽  
Fiber Reinforced ◽  
Shear Tests ◽  
Direct Shear Tests ◽  
Proposed Model ◽  
Fiber Reinforced Soil ◽  
Element Method

In this research, loop-formed fiber is introduced as a novel reinforcement method of soil composites instead of using ordinary fibers. In order to investigate the materials' mechanical properties, the shear behavior of both fiber and looped-fiber-reinforced soil composites was analyzed by micromechanical method (finite element method) and a set of direct shear tests. The results indicate that the looped-fiber soil composite exhibits greater failure strain energy compared with fiber-reinforced soil composite at the same fiber orientation in the substrate. Furthermore, the proposed model demonstrated two major reinforcing components: “the fiber effect” and “the loop effect.” The latter effect is the key benefit and the main advantage of using looped fibers over ordinary fibers in soil reinforcement. Altogether, there is a close agreement between finite element method outputs and experimental results, suggestive of a novel technical textile material that could potentially be used in geotechnical engineering.

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