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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Numerical study on the effect of thermal conduction on explosive welding interface
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Numerical study on the effect of thermal conduction on explosive welding interface

机译：热传导对爆炸焊接界面影响的数值研究

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摘要

Thermal deposition and temperature distribution on the interface of explosive welding composites affect the formation of molten regions and the interface morphology. This study is primarily devoted to discussing the effect of thermal conduction on the distribution of interfacial temperature. Two-dimensional models with thermal conductivity coefficient were established based on the Johnson-Cook constitutive equation and Gruneisen state equation by using the smooth-particle hydrodynamics (SPH) method in Fortran. The simulation results show that the melting of interface metals occurred in all the case even it was too small to observe, which verified the interface melting metal has similar characteristics of incompressible fluid during the welding process. Furthermore, the temperature distribution was significantly different from the adiabatic model with the help of high cooling rate when the plate thickness is less than 1 mm, which suggested the thermal conduction cannot be neglected in the analysis of temperature and melting under this condition.
机译：热沉积和爆炸焊接复合材料的界面上的温度分布影响的熔融区域的形成和界面形态。该研究主要是专门讨论对界面温度分布的热传导的效果。用热导率系数的二维模型基础上建立通过使用平滑粒子流体动力学（SPH）用Fortran方法的约翰逊 - 库克本构方程和Gruneisen状态方程。仿真结果表明，界面金属的熔化发生在所有的情况下，即使它太小观察，验证了界面熔化金属具有在焊接过程中的不可压缩流体的类似的特征。另外，温度分布为从具有高冷却速度的帮助绝热模型显著不同当板厚度小于1mm时，这表明了热传导不能在温度和熔化该条件下分析被忽略。

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