Three-Dimensional Heat Transfer Analysis to Hybrid Multilayer Composite Structure
Chang Xiaoquan,Zheng Gangtie
(School of astronautics, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China)

Abstract: The hybrid multilayer composite structures consist of layers with different thermal conductivity and constitutive constants. To analyze the internal heat transfer mechanism and the thermo-elastic characteristics of the hybrid structure, three-dimensional models are required to get the more accurate results. Utilized the equivalent element based on three-dimensional heat transfer theory and Galikin finite element methods for heat conduction, the results with higher accuracy and less computation are achieved. The difficulty due to thiner single layer is solved by introducing the concept of equivalent element possibly including one or few layers, thus the sufficient topology information can be used to analyze the coupled situations under multi-physical conditions.
Keywords: hybrid multilayer composite structure, composite, three-dimensional heat transfer.