Research on the dynamic response of composite barrel in railgun shot tests

摘要：

　　The dynamic response of fiber reinforced railgun barrel in railgun shot tests has been simulated by a code introduced in this paper.This code is developed based on a load transfer coupled physics analysis.Electromagnetic and structure physics files are created independently and fully coupled in every time step for a coupled analysis.Dynamic distributions of magnetic field, eddy current and magnetic force in rails and composites in a railgun shot are simulated.A subsequent stress analysis at the same time point is conducted by mapping nodal results from electromagnetic analysis to structure analysis.Skin effect of pulse current is included in the computational model.Solving efficiency of this code is improved by adjusting the length of solving time for starting and acceleration of armature in railgun bore.Some results by this code show good agreement with experimental results in railgun shot tests.

关键词： Dynamic response Fiber reinforcedbarrel Coupled physics analysis Magnetic force

作者: Hong-cheng XIAO Yuan GAO Bao-ming LI

作者单位: National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 69-72

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）