Numerical Modeling of Thermal Conductivity of Diamond Particle Reinforced Aluminum Composite

摘要：

　　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.

关键词： Finite element method Composite materials Thermal properties Interfaces

作者: Wu-lin Yang Kun Peng Jiaqun Zhu De-yi Li Ling-ping Zhou

作者单位: College of Materials Science and Engineering, Hunan University, Changsha 410082, China; Hunan Provin College of Materials Science and Engineering, Hunan University, Changsha 410082, China

会议类型: 国际会议

会议名称: The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 344-349

在线出版日期: 2013-08-23（万方平台首次上网日期，不代表论文的发表时间）