Luteng Liu, Long Li, Shihong Lu, Luyao Wang, Yuqi Liu, Deyue Li
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引用次数: 0
Abstract
With the advancement of numerical simulation technology, the representative volume element has been widely applied to the analysis and design of composite structures. In this work, an improved random sequential absorption method was developed for batch modeling and simulation of diamond-reinforced composites. The proposed algorithm incorporates the core principles of the Cell-list method while integrating a weighted displacement adjustment strategy, achieving packing densities of up to 54 % for spherical particles and 42 % for hexoctahedral particles within the representative volume elements. To ensure the periodic boundary conditions of the representative volume element models, an auxiliary space is employed. Using the method, thermal transfer models for diamond/Cu and diamond/Al were developed. The study analyzed the impact of diamond thermal conductivity, volume fraction, particle size, and interfacial thermal conductance on the overall thermal conductivity. The data curves reveal that the thermal conductivity of diamond/Cu and diamond/Al exhibits a linear relationship with the thermal conductivity and volume fraction of the reinforcements. However, there is a clear nonlinear relationship with particle size and interfacial thermal conductance, and no significant correlation with the sphericity of the diamond particles. The results were compared with predictions from the Maxwell, Hasselman and Johnson and the differential effective medium models, which finds that the differential effective medium model provides more accurate predictions of the thermal conductivity of diamond-reinforced composites, although the prediction error increases with the increase in volume fraction.
期刊介绍:
DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices.
The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.