Numerical Investigation of Interface Debonding of Particle Reinforced Composites by Unit Cell Model

2007 ◽  
Vol 14 (5) ◽  
pp. 200-204
Author(s):  
Fu-rong LIU ◽  
Yue-guang YU ◽  
Ke-li ZENG ◽  
Xian-jing REN ◽  
K.C. Chan
Keyword(s):  
Numerical Investigation ◽  
Cell Model ◽  
Unit Cell ◽  
Interface Debonding ◽  
Reinforced Composites ◽  
Unit Cell Model ◽  
Particle Reinforced Composites

Coefficients of thermal expansion of unidirectional fiber-reinforced composites using unit-cell model

2018 ◽  
Vol 53 (11) ◽  
pp. 1425-1436
Author(s):  
PC Upadhyay ◽  
JP Dwivedi ◽  
VP Singh
Keyword(s):  
Thermal Expansion ◽  
Cell Model ◽  
Unit Cell ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Unit Cell Model ◽  
Fiber Reinforced ◽  
Two Phase ◽  
Thermal Expansion Coefficients ◽  
Three Phase

Coefficients of thermal expansion of some uniaxially fiber-reinforced composites have been evaluated using three-phase unit-cell model. Results have been compared with the values predicted by two other models based on composite cylinders assembly (CCA), and also with some earlier reported experimental values. An extension of the two-phase unit-cell model has also been presented for the evaluation of thermal expansion coefficients of three-phase composites. The formulation has been used to evaluate the overall coefficients of thermal expansion of AS-graphite/epoxy system with a low modulus coating on the fibers. The results have been compared with the results obtained from the Sutcu's recursive concentric cylinders model for composites containing coated fibers. From the comparison of results of the unit-cell models (both, two-phase and three-phase) with the results obtained from some other models available in the literature, it is concluded that the overall thermal properties of fiber-reinforced composites evaluated by the unit-cell model can be used as effectively as by any other model.

A micromechanical unit cell model with an octagonal fiber for continuous fiber reinforced composites

2020 ◽  
Vol 54 (28) ◽  
pp. 4495-4513
Author(s):  
Yuanchen Huang ◽  
Carlos Alberto Cimini ◽  
Sung Kyu Ha
Keyword(s):  
Cross Section ◽  
Cell Model ◽  
Unit Cell ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Unit Cell Model ◽  
Continuous Fiber ◽  
Fiber Model ◽  
Amplification Factors ◽  
Stress Amplification

This paper presents a novel micromechanical unit cell model for continuous fiber reinforced composites, which features a fiber with an octagonal cross-section embedded in surrounding matrix, and was named as octagonal fiber model. The cross-section of octagonal fiber model was subdivided into five by five sub-regions, and the conditions of equilibrium and deformation compatibility were applied to derive expression of effective ply properties, and stress amplification factors, which correlate microstresses in sub-regions with ply stresses. For E-glass/epoxy and carbon/epoxy material systems with different fiber volume fractions, effective ply properties and stress amplification factors in sub-regions were evaluated using derived formulae. Results from octagonal fiber model were then compared with those from multiple analytical methods and finite element unit cell model. It was shown that effective ply properties predicted by octagonal fiber model were generally in good agreement with those from finite element model, and octagonal fiber model outperformed other analytical counterparts in estimating stress amplification factors, demonstrating the potential of octagonal fiber model.

A two-dimensional analytical unit cell model for redox flow battery evaluation and optimization

2021 ◽  
Vol 506 ◽  
pp. 230192
Author(s):  
Yunxiang Chen ◽  
Jie Bao ◽  
Zhijie Xu ◽  
Peiyuan Gao ◽  
Litao Yan ◽  
...  
Keyword(s):  
Cell Model ◽  
Unit Cell ◽  
Two Dimensional ◽  
Redox Flow Battery ◽  
Unit Cell Model ◽  
Flow Battery

Meshfree Continuum Damage Mechanics Modelling for 3D Orthogonal Woven Composites

2011 ◽  
Vol 488-489 ◽  
pp. 759-762
Author(s):  
L.Y. Li ◽  
M.H. Aliabadi ◽  
Pi Hua Wen
Keyword(s):  
Damage Mechanics ◽  
Shape Function ◽  
Cell Model ◽  
Continuum Damage Mechanics ◽  
Unit Cell ◽  
Woven Composites ◽  
Continuum Damage ◽  
Unit Cell Model ◽  
Cell Models ◽  
3D Orthogonal Woven

A Meshfree approach for continuum damage modeling of 3D orthogonal woven composites is presented. Two different shape function constructions, Radial basis (RB) function and Moving kriging (MK) interpolation, are utilized corresponding with Galerkin method in the Meshfree approach. The failure of two different unit cell models, straight-edge and smooth fabric unit cell model respectively, is compared.

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