[1]巩飞,翁春生.固体电枢熔化波烧蚀的二维数值模拟[J].南京理工大学学报(自然科学版),2012,36(03):487-491.
 GONG Fei,WENG Chun-sheng.Two-dimensional Numerical Simulation of Melt-wave Erosion in Solid Armatures[J].Journal of Nanjing University of Science and Technology,2012,36(03):487-491.
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固体电枢熔化波烧蚀的二维数值模拟
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
36卷
期数:
2012年03期
页码:
487-491
栏目:
出版日期:
2012-06-30

文章信息/Info

Title:
Two-dimensional Numerical Simulation of Melt-wave Erosion in Solid Armatures
作者:
巩飞; 翁春生;
南京理工大学瞬态物理国家重点实验室;
Author(s):
GONG FeiWENG Chun-sheng
National Key Lab of Transient Physics,NUST,Nanjing 210094,China
关键词:
电磁轨道炮 固体电枢 熔化波 烧蚀 有限差分法
Keywords:
railguns solid armature melt-wave erosion finite difference method
分类号:
TM15
摘要:
为了准确地反映电磁轨道炮内电枢烧蚀的特性,建立了二维固体电枢熔化波烧蚀的计算模型。采用有限差分的交替方向隐式法进行耦合计算,得到了熔化波烧蚀的变化特性。计算结果表明,烧蚀的驱动机制为速度趋肤效应,电流集中在电枢与导轨接触面的尾部边缘,使电枢焦耳热剧增导致出现烧蚀。熔化波从电枢尾部向头部推进,当传至电枢头部时,可能引发电枢转捩。
Abstract:
In order to reflect armature erosion characteristics in railguns exactly,a computational model of melt-wave erosion in two-dimensional solid armatures is developed.The variation characteristics of melt-wave erosion are obtained adopting coupling calculations by using the Peaceman-Rachford(P-R)format of the finite difference method.The calculation results show that:the driving mechanism of erosion is the velocity skin effect,a concentration of current is at the rear edge of the rail-armature interface,and the erosion occurs due to the joule heating.The melt-wave moves from the back to the front of the armature.It is possible to cause an armature transition when the melt-wave reaches the front of the armature.

参考文献/References:

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备注/Memo

备注/Memo:
高等学校博士学科点专项科研基金(20093219110037)
更新日期/Last Update: 2012-10-12