项目名称: 高速脉冲大电流下枢轨接触面动态数值计算方法研究
项目编号: No.51307176
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 电工技术
项目作者: 关晓存
作者单位: 中国人民解放军海军工程大学
项目金额: 26万元
中文摘要: 本项目针对高速脉冲大电流枢轨接触面动态数值计算方法进行深入系统研究,为揭示导轨式电磁发射装置烧蚀和刨削形成机理提供计算方法。在现有研究成果无法准确描述枢轨接触面动态过程和难以进行多场耦合计算的基础上,本项目提出一种新型高速脉冲大电流下枢轨接触面瞬态电磁场计算方法,以实现其快速准确的计算;提出瞬态电磁场、温度场和应力场双向耦合计算方法,初步探索电磁场、温度场和应力场多场耦合计算问题;提出电枢表面瞬态磨损量的计算方法,以准确描述电枢表面瞬态熔化磨损的动态过程。在以上研究基础上,搭建小型导轨式电磁发射装置,对仿真分析进行相关试验验证。
中文关键词: 导轨式电磁发射装置;多场耦合;摩擦磨损;电枢;有限元
英文摘要: The project provides dynamic calculation method for revealing rail-type electromagnetic launcher ablation and gouging formation mechanism, and intends to systematically study on dynamic simulation method of the armature-rail contact surface in the high-speed pulse current. Presently ,the existing research does not accurately describe armature-rail contact surface dynamic process and is difficult to calculate multi-field coupling field. So,a new type of transient electromagnetic calculation method on armature-rail contact surface in the high speed pulse current is proposed, it could achieve the fast and accurate calculation; The bi-directional coupling calculation method of transient electromagnetic field, temperature field and stress field is proposed, it is a preliminary exploration of electromagnetic field, temperature field and stress field coupling calculation problems; The armature surface transient wearing capacity calculation method is proposed, it could accurately describe the transient armature surface melting wear dynamic process. On the basis of the above studies, the small rail-type electromagnetic launcher is designed, and some experiments are does to verify the calculation method.
英文关键词: rail launcher;multi[filed couping;friction;armature;finite element