Analysis on Temperature Field at the Time of Pulse Current Discharge in Metal Structure With Elliptical Embedding Crack
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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.Abstract: 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.
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[1] 付宇明,白象忠,郑丽娟.金属模具电磁热裂纹止裂研究的新进展[J].燕山大学学报,2007,31(2):95-103. [2] FU Yu-ming,BAI Xiang-zhong,HU Yu-da.Technique for producing crack arrest by electromagnetic heating[J].Materials Science and Technology,2001,17(12):1653-1656. [3] 范天佑.断裂理论基础[M].北京:科学出版社,2003,113-181. [4] 许维德.流体力学[M].北京:国防工业出版社,1979,25-69. [5] 埃克特E R G,德雷克 K M.传热与传质分析[M].航青 译.北京:科学出版社,1983,3-29,103-215. [6] Мусхелишвили Н И.数学弹性力学的几个基本问题[M].赵惠元 译.北京:科学出版社,1958,199-203. [7] 付宇明,郑丽娟.轴对称金属模具电磁热裂纹止裂温度场的分析[J].工程力学,2006,23(7):180-184.
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