文章基本信息

标题：Numerical simulation of interior ballistic process of railgun based on the multi-field coupled model
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作者：Qing-hua Lin ; Bao-ming Li
期刊名称：Defence Technology
印刷版ISSN：2214-9147
出版年度：2016
卷号：12
期号：2
页码：101-105
DOI：10.1016/j.dt.2015.12.008
出版社：Elsevier B.V.
摘要：Abstract Railgun launcher design relies on appropriate models. A multi-field coupled model of railgun launcher was presented in this paper. The 3D transient multi-field was composed of electromagnetic field, thermal field and structural field. The magnetic diffusion equations were solved by a finite-element boundary-element coupling method. The thermal diffusion equations and structural equations were solved by a finite element method. A coupled calculation was achieved by the transfer data from the electromagnetic field to the thermal and structural fields. Some characteristics of railgun shot, such as velocity skin effect, melt-wave erosion and magnetic sawing, which are generated under the condition of large-current and high-speed sliding electrical contact, were demonstrated by numerical simulation.
关键词：Railgun; Electromagnetic field; Thermal field; Structural field; Finite element; Numerical simulation