摘要
对带有椭圆埋藏裂纹金属构件在脉冲放电瞬间的温度场进行了理论分析.在带有裂纹问题温度场的理论求解中,根据相似性原理,将电流通过带有椭圆面裂纹导体类比于流体流过障碍物的情形,从而引入了裂纹的边界条件,得到域内电流密度的分布,进而得到了放电瞬间埋藏椭圆裂纹尖端的温度场表达式,为空间裂纹电磁热止裂技术的实际应用提供了理论基础.
Temperature field at the time of pulse current discharge in metal structure with elliptical embedding crack was theoretically analyzed. In the progress of getting the temperature field, the current flows past an elliptical embedding crack is similar to the fluid flows past a barrier according to similarity principle. The boundary condition deriving from this theory was introduced so that the distribution of the current density and the temperature field expressions are gotten. The basic theoretical study for the actual application of spatial crack arrest is carried on by electromagnetic heating.
出处
《应用数学和力学》
CSCD
北大核心
2008年第7期871-876,共6页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(50675190)
关键词
埋藏裂纹
止裂
温度场
脉冲放电
电磁热效应
embedding crack
crack arrest
temperature field
pulse current discharge
electromagnetic heating effect
