Mean-field homogenization based approach to evaluate macroscopic coefficients of thermal expansion of composite materials
作者： Wenlong Tian , Lehua Qi , Changqing Su , Jiming Zhou
DOI: 10.1016/J.IJHEATMASSTRANSFER.2016.07.036
关键词: Volume fraction 、 Thermal expansion 、 Homogenization (chemistry) 、 Composite material 、 Materials science 、 Mean field theory 、 Transverse isotropy 、 Material properties 、 Quadratic equation
摘要: Abstract In this paper, a mean-field homogenization based approach implemented in the two steps sequentially is proposed to evaluate macroscopic coefficients of thermal expansion (CTEs) multi-phase composites. The adopted models are quadratic interpolative M-T/D-I model first-step procedure and simple Voigt/Reuss second-step procedure, respectively. validated by comparing with RVE FE method. simulation results indicate that increase inclusion volume fraction, CTEs composites generally decrease because inclusions possess smaller than matrices. However, case planarly distributed inclusions, through-thickness firstly fraction then fraction. effect aspect ratio on can be neglected, while transversely isotropic material properties must considered.
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