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Advances in Materials Science and Engineering
Volume 2016 (2016), Article ID 5690272, 11 pages
Research Article

Damage Simulation of a Random Aggregate Model Induced by Microwave under Different Discontinuous Ratios and Exposure Times

1State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
2School of Hydroelectricity, Hebei University of Engineering, Handan 056038, China
3Applied Mechanics Department, Agricultural University, Beijing 100083, China

Received 9 March 2016; Revised 2 June 2016; Accepted 21 June 2016

Academic Editor: Robert Cerný

Copyright © 2016 Yang Tang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A random aggregate algorithmic method and a numerical model for two-phase materials (composed of quartz and plagioclase) with different discontinuous ratios and irradiation times were studied based on the discrete element method using two-dimensional particle flow code (). The results showed that this algorithm can simulate random irregular aggregate shapes. Furthermore, crack initiation and development and the coalescence process of microwave-induced material damage could be predicted using the discrete element method. After analysis of this study, the micro crack originated from the boundary of the high-absorption-phase plagioclase crystal and expanded around the plagioclase, extending into the quartz material. The crack morphology presented a radial network.