Numerical Analysis of the Lifting Beam's Influence on Flow Fields in Planar Fuel Assemblies

WANG, Jinhua; Bo, Hanliang; Jiang, Shengyao; Zheng, Weiye

doi:10.3327/jnst.41.925

Cited by 3 publications

(3 citation statements)

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“…The majority of studies assumed just either exfoliated [11,77,80,82,83,85,86] or intercalated morphology [78,79,81,84]. Some studies simulated the combination of exfoliated and intercalated ones [6,12,32,69,75,76,87,88]. Almost all researchers not only neglect the existence of aggregated morphology, but also assumes fixed numbers of nanoclay layers in the intercalated particles.…”

Section: Gap Analysismentioning

confidence: 99%

Mechanical Properties of Nanoclay and Nanoclay Reinforced Polymers: A Review

Rafiee

Shahzadi

2018

Polymer Composites

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A literature review is conducted on performed investigations for characterizing Young's modulus of nanoclay platelet as the reinforcing agent of nanoclay/polymer nanocomposites from both experimental and theoretical aspects. The observed discrepancies in the reported results are discussed accordingly. All available investigations for predicting mechanical properties of nanoclay reinforced polymers are also reviewed. The employed methods in ongoing studies are categorized into three groups as atomistic, continuum and multiscale modeling techniques. Those challenging issues which are still in need of more accurate understanding and discussion are identified and outlined through a gap analysis on current investigations. The introduced shortcomings can be considered as prospective research areas for the future studies in the field of estimating mechanical properties of nanoclay based composites. POLYM. COMPOS., 40:431–445, 2019. © 2018 Society of Plastics Engineers

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Section: Gap Analysismentioning

confidence: 99%

Mechanical Properties of Nanoclay and Nanoclay Reinforced Polymers: A Review

Rafiee

Shahzadi

2018

Polymer Composites

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“…Among the primary microtextural parameters (such as fiber volume fraction, aspect ratio, or distribution), the fiber orientation is one of the most significant variables, as it governs the anisotropy of the composite. It strongly influences the macroscopic material behavior, especially its stiffness, thermal expansion, thermal conductivity, and viscosity [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

A simplified method to determine the 3D orientation of an injection molded fiber‐filled polymer

Régnier¹,

Dray²,

Jourdain³

et al. 2008

Polymer Engineering & Sci

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In short-fiber reinforced composites, it is widely accepted that the fiber orientation plays an important role on their overall physical and thermomechanical properties. To predict the properties of such composite materials, a full 3D fiber orientation characterization is required. A variety of destructive and nondestructive techniques have been developed, but all the methods have the same common point that they are very tedious and time consuming. Knowing that the fiber orientation induced by the flow remains mainly in the flow plane, an easier method has been performed for injection molded fiber-filled polymers. It is based on the simple 2D SEM image analysis of a specific 458-oblique section plane. Then, the indetermination of fiber orientation from an ellipse mark analysis does not exist anymore. This novelty also turns out to be much more accurate. To achieve measurements over large composite samples, the method has been fully automated.

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“…By adding some limitations, the improved Halpin-Tsai equation is used to predict the material properties of nanocomposites with low fiber volume fraction [9]. Based on the Mori-Tanaka model [10], Mori-Tanaka method is developed by Wang and Pyrz [11,12] for the prediction of overall moduli of nano-composites reinforced with transversely isotropic silicate. In fact, Mori-Tanaka method can give reasonable estimation for the overall material properties of fiber-reinforced composites within a relative wide range of fiber volume fraction.…”

Section: Introductionmentioning

confidence: 99%

Application of homogenization method on the evaluation and analysis of the effective stiffness for noncontinuous carbon nanotube/polymer composites

2007

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The effective stiffness of noncontinuous carbon nanotubes (CNTs)/polymer composites are predicted by the homogenization method with exact periodic boundary conditions. Numerical calculations for regular and staggered array models are performed by the macro-microscopic finite element methods. The results are compared with those from Mori-Tanaka and Halpin-Tsai theories, which show that the stiffness of CNTs composites are not only related to aspect ratio and CNTs volume fraction as described in the earlier theories, but also sensitive to the space between CNTs ends, the distribution of CNTs within the selected representative volume element, and the geometrical shape of CNTs. The results from the two empirical approaches are included in the present results with special spacing ratios of horizontal and vertical fiber ends (T f /H f ). It is proved that the homogenization method is an efficient method to predict the effective stiffness of CNTs/polymer composites with periodic microstructure.

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Numerical Analysis of the Lifting Beam's Influence on Flow Fields in Planar Fuel Assemblies

Cited by 3 publications

References 0 publications

Mechanical Properties of Nanoclay and Nanoclay Reinforced Polymers: A Review

Mechanical Properties of Nanoclay and Nanoclay Reinforced Polymers: A Review

A simplified method to determine the 3D orientation of an injection molded fiber‐filled polymer

Application of homogenization method on the evaluation and analysis of the effective stiffness for noncontinuous carbon nanotube/polymer composites

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