期刊
APPLIED THERMAL ENGINEERING
卷 29, 期 5-6, 页码 932-937出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2008.04.022
关键词
Brake shoe; Three-dimensional; Transient temperature field; Integral-transform method; Emergency braking; Hoist
资金
- Key Project of Chinese Ministry of Education [107054]
- New Century Excellent Talents in University [NCET-04-0488]
In order to exactly master the change rules of brake shoe's temperature field during hoist's emergency braking, the theoretical model of three-dimensional (3-D) transient temperature field was established according to the theory of heat conduction, the law of energy transformation and distribution, and the operating condition of mining hoist's emergency braking. An analytic solution of temperature field was deduced by adopting integral-transform method. Furthermore, simulation experiments of temperature field were carried out and the variation regularities of temperature field and internal temperature gradient were obtained. At the same time, by simulating hoist's emergency braking condition, the experiments for measuring brake shoe's temperature were also conducted. It is found, by comparing simulation results with experimental data, that the 3-D transient temperature field model of brake shoe is valid and practical, and analytic solution solved by integral-transform method is correct. (C) 2008 Elsevier Ltd. All rights reserved.
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