Finite Element Study of Transverse Thermal Conductivty of Unidirectional Green Composites

摘要：

A two-dimensional unit cell model of natural fiberpolymer composite was studied using finite element method (FEM) to evaluate the effect of natural fiber lumen size on the transverse thermal conductivity of the unidirectional green composite,. In this study, the FE cell model was kept in the steady state thermal condition. The results showed that the effective transverse thermal conductivity K has a relationship with the geometrical ratio (a, 0<α<l) of lumen radius (rf) to fiber radius (rf). When the lumen size ratio a is small, K increases with increasing fiber volume fraction Vf, while K decreases as the Vf-increases when a is large. The results indicate that the thermal property of composites changes with fibers lumen size. When a composite is designed for thermal insulation material, we should choose the natural fiber with large lumen, and to design thermal conductive composite, small lumen size should be used.

关键词： Unidirectional Green Composites Lumen Finite Element Method Thermal Conductivity

作者: Ke Liu Hitoshi Takagi Zhimao Yang

作者单位: MOE Key Laboratory for Nonequilibrium Materials Synthesis and Modulation of Condensed Matter, School Institute of Technology and Science, The University of Tokushima,2-1 Minamijosanjima-cho, Tokushima MOE Key Laboratory for Nonequilibrium Materials Synthesis and Modulation of Condensed Matter, School

会议类型: 国际会议

会议名称: The Ninth China-Japan Joint Conference on Composite Materials(第九届中日复合材料学术会议 CJJCC-9)

会议地点: 呼和浩特

会议语种:英文

页码: 84-88

在线出版日期: 2010-09-01（万方平台首次上网日期，不代表论文的发表时间）