Temperature field at time of pulse current discharge in metal structure with elliptical embedding crack  

作　　者：付宇明 田振国 郑丽娟 李伟 

机构地区：[1]College of Mechanical Engineering,Yanshan University

出　　处：《Applied Mathematics and Mechanics(English Edition)》2008年第7期961-966,共6页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (No.50675190)

摘　　要：Theoretical analysis is made on the temperature field at the time of pulse current discharge in a metal structure with an elliptical embedding crack. In finding the temperature field, analogy between the current flow through an elliptical embedding crack and the fluid flow through a barrier is made based on the similarity principle. Boundary conditions derived from this theory are introduced so that the distribution of current density and the temperature field expressions can be obtained. The study provides a theoretic basis to the applications of stopping spatial crack with electromagnetic heating.Theoretical analysis is made on the temperature field at the time of pulse current discharge in a metal structure with an elliptical embedding crack. In finding the temperature field, analogy between the current flow through an elliptical embedding crack and the fluid flow through a barrier is made based on the similarity principle. Boundary conditions derived from this theory are introduced so that the distribution of current density and the temperature field expressions can be obtained. The study provides a theoretic basis to the applications of stopping spatial crack with electromagnetic heating.

关 键 词：embedding crack crack arrest temperature field pulse current discharge electro-magnetic heating effect 

分 类 号：O482.6[理学—固体物理]