A unified numerical approach for thermal analysis of transversely isotropic fiber-reinforced composites containing inhomogeneous interphase

2005 ◽  
Vol 36 (6) ◽  
pp. 728-738 ◽  
Author(s):  
L.H. You ◽  
X.Y. You
Keyword(s):  
Thermal Analysis ◽  
Transversely Isotropic ◽  
Numerical Approach ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced

scholarly journals A novel determination of the minimal size of a probabilistic representative volume element for fiber-reinforced composites’ thermal analysis

2018 ◽  
Vol 22 (6 Part A) ◽  
pp. 2551-2564
Author(s):  
Zecan Tu ◽  
Junkui Mao ◽  
Junjun Mao ◽  
Hua Jiang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Analysis ◽  
Heat Flux ◽  
Thermal Gradient ◽  
Volume Fraction ◽  
Volume Element ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Minimal Size ◽  
Fiber Reinforced

In order to provide an accurate thermal analysis method of fiber-reinforced composites, a novel model based on a probabilistic representative volume element (RVE) is presented in this paper. Monte Carlo methods, probability analysis and finite element analysis have been applied together. The effective transverse thermal conductivity, heat flux field, and thermal gradient field of typical fiber-reinforced composites are examined. The criteria of RVE have been determined, and the minimal size for thermal analysis is obtained using the main statistics and the cross-entropy theory. At the same time, the fiber-to-matrix ratio of thermal conductivity and volume fraction have been changed to determine the influence on heat transfer inside fiber-reinforced composites. It is shown that different purposes of simulations lead to different minimal RVE sizes. The numerical results indicate that the non-dimensional minimal RVE sizes for calculating the effective thermal conductivity, heat flux, and thermal gradient are 30, 80, and 80, respectively. Compared with the volume fraction, the fiber-to-matrix ratio of the thermal conductivity has a more significant effect on minimal RVE size. When the thermal conductivity ratio increases, the minimal size of the RVE increases at first, then it remains almost unchanged.

Elastic Constants of Fiber-Reinforced Composites With Transversely Isotropic Constituents

1971 ◽  
Vol 38 (4) ◽  
pp. 1062-1065 ◽  
Author(s):  
Ernst Behrens
Keyword(s):  
Elastic Constants ◽  
Lattice Model ◽  
Hexagonal Lattice ◽  
Transversely Isotropic ◽  
Numerical Results ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Explicit Expressions

Several models for calculating elastic constants of fiber-reinforced composites with transversely isotropic constituents are discussed. Numerical results are obtained from simple explicit expressions and compared with recently published computer solutions of a hexagonal lattice model.

Thermal Analysis for Fiber-Reinforced Composites Containing Inhomogeneous Interphase Subjected to a Radial Constraint

2013 ◽  
Vol 652-654 ◽  
pp. 77-83
Author(s):  
Zhi Hua Ning ◽  
Xi Nan Liu
Keyword(s):  
Thermal Analysis ◽  
Material Properties ◽  
Radial Stress ◽  
Thermal Stresses ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Linear Variation ◽  
Fiber Reinforced ◽  
Uniform Temperature ◽  
Generalized Plane Strain

This paper presents the thermal analysis on fiber-reinforced composites containing inhomogeneous interphase subjected to a uniform temperature change. Based on the assumption of generalized plane strain, the deformations and thermal stresses of the composites subjected to a radial constraint are obtained by using iterative technique. The material properties of the interphase are assumed to be linear variation along radial direction. The effects of different volume fractions of the interphase on the stresses in the composites subjected to applied radial stress/strain are investigated.

Cross-Property Connections for Fiber-Reinforced Composites with Transversely Isotropic Constituents

2007 ◽  
Vol 142 (3-4) ◽  
pp. 299-306 ◽  
Author(s):  
Igor Sevostianov ◽  
Federico J. Sabina ◽  
Julian Bravo-Castillero ◽  
Raul Guinovart-Diaz ◽  
Reinaldo Rodriguez-Ramos
Keyword(s):  
Transversely Isotropic ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced
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