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Date of Publication:2013-01-01

Journal:高技术通讯

Issue:3

Page Number:325-329

ISSN No.:1002-0470

Abstract:An equivalent model for analysis of the transient heat conduction of linear heterogeneous materials was presented to predict and evaluate the equivalent properties and the equiralent behavior of the macroscopic temperature field. Based on adaptive algorithm in time domain, the transient heat conduction equation was expanded in time domain, and by combining with the asymptotic expansion homogenization technique, the recursive equivalent heat conduction equation was obtained. Finally, the model for calculation of the equivalent transient temperature field was acquired by the finite element method. During the calculation based on the model, calculation errors were avoided through the adaptive computation when the size of time step changed. In numerical examples the calculation results of the equivalent analysis and the heterogeneous solutions based on ANSYS were compared, and the satisfactory results were achieved.

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