Numerical Modeling of Thermal Conductivity of Diamond Particle Reinforced Aluminum Composite

Abstract:

In the present work, the finite element method is employed to predict the effective thermal conductivity of diamond particle reinforced aluminum composite. The common finite element commercial software ANSYS is used to for this numerical analysis. A body-centered cubic particle arrangement model are constructed to simulate the microstructure of the composite with 60 vol.% diamond. The effect of particle size and inhomogeneous interfacial conductance on the thermal conductivity of diamond particles reinforced aluminum composite is investigated. Cubo-octahedral particles are assumed and interfacial thermal conductance between different diamond faces and aluminum matrix is implemented by real constants of contact element. The results show that the numerical results using present model agree reasonably well with the experimentation. Taking into consideration the interfacial thermal conductance, the influence of particle size on total thermal conductivity of composite is obvious, the larger size particles tend to meet requirement of the high thermal conductivity of composite. Fitting the experimental result with the inhomogeneous interfacial thermal conductance model, the evolution of the composite thermal property is profound studied.

• Periodical: Advanced Materials Research (Volume 873)
• Pages: 344-349
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.873.344
• Online since: December 2013
• Authors: Wu Lin Yang*, Kun Peng, Jia Jun Zhu, De Yi Li, Ling Ping Zhou
• Keywords: Composite Material, Finite Element Method (FEM), Interface, Thermal Properties

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