Enhancement of Thermal Conductivities in Polymeric Fiber Reinforced Composite Materials

1992 ◽  
Vol 114 (4) ◽  
pp. 416-421 ◽  
Author(s):  
F. Gordaninejad
Keyword(s):  
Finite Element ◽  
Composite Materials ◽  
Three Dimensional ◽  
Pulse Method ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Three Dimensional Finite Element ◽  
Polymeric Fiber ◽  
Thermal Conductivities

In this study it is demonstrated that thermal conductivities of polymeric fiber-reinforced composite materials can be enhanced by using coated fibers and by adding thermally conductive microspheres to the resin. Two and three-dimensional finite element unit cell models are developed to predict the directional thermal conductivities. The analyses are based on the flash pulse method. It is found that the thermal conductivities in the longitudinal and the transverse directions are highly dependent on the fiber and microsphere volume fractions as well as on the thermal conductivities of fiber, microsphere, and coatings. It is shown that the 2-D analysis is a good approximation for the 3-D model. Close agreements among analytical, finite element and experimental results are obtained.

A Finite Element Model to Simulate the Cutting of Carbon Fiber Reinforced Composite Materials

2010 ◽  
Vol 97-101 ◽  
pp. 1745-1748
Author(s):  
Gui Yu Li ◽  
Jian Feng Li ◽  
Jie Sun ◽  
Wei Dong Li ◽  
Liang Yu Song
Keyword(s):  
Finite Element ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Finite Element Model ◽  
Element Model ◽  
Aluminum Matrix Composites ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Carbon Fiber Reinforced

In the present study, the finite element model of machining carbon fiber reinforced aluminum matrix composites with representative fiber orientation of 90 degree is established with the following developments: (i) a Johnson-Cook constitutive model of each component in the multi-phase composite materials; (ii) a failure model of the composite material based on physical separation criterion; (iii) the interface between fiber and matrix defined by a interaction. This simulating method can be developed to each kind of fiber reinforced composite materials.

Process-Induced Residual Thermal Stresses in Advanced Fiber-Reinforced Composite Laminates

1984 ◽  
Vol 106 (1) ◽  
pp. 48-54 ◽  
Author(s):  
R. J. Stango ◽  
S. S. Wang
Keyword(s):  
Composite Laminates ◽  
Thermal Stresses ◽  
Three Dimensional ◽  
Fiber Reinforced ◽  
Deformation And Failure ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Dimensional Finite Element ◽  
Stress States ◽  
Three Dimensional Finite Element

A study of process-induced stresses in advanced fiber-reinforced composite laminates is presented. An analysis of the residual thermal stresses is conducted on the basis of laminate thermoelasticity theory in conjunction with a quasi-three-dimensional finite element method. Formulation of the numerical method is briefly outlined in the paper. To illustrate the fundamental nature of the problem, numerical examples for a quasi-isotropic [0 deg/90 deg/ ± 45 deg]s graphite-epoxy composite system are presented. Complex three-dimensional stress states of significant magnitude are reported. Emphasis is placed on the interlaminar stress distributions along ply interfaces. Effects of laminate stacking sequence on the residual thermal stresses are examined in detail. Implications of the results on deformation and failure of composite laminates are discussed.

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