Shearing Mechanism of Straight Thin Copper Wires at Connecting Terminal due to Lightning Current

作     者：胡小博 Takahiro OTSUKA Toru IWAO Tsuginori INABA 

作者机构：Chuo UniversityTokyo 112-8551Japan Toko Electric CorporationSaitama 349-0192Japan Musashi Institute of TechnologyTokyo 158-8557Japan 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2007年第9卷第6期

页      面：752-755页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：lightning copper wire broken 

摘      要：When a lightning current is impressed through a copper wire, the copper wire would be melted. A straight thin copper wire with a diameter of 0.1 mm,~ is melted due to the specific melting Joule heating （j^2t）m in an adiabatic condition. However, it has been recognized in the experiment that the thicker copper wires of φ1 mm are not completely melted, but sheared mainly at the connecting terminal by a relatively low impulse current. Electro-magnetic mechanical shearing stress, etc. are discussed in addition to the conventional Joule heating. New broken mechanisms were presumed and proved in the additional experiments.