Temperature Field Due to a Moving Heat Source: A Moving Mesh Finite Element Analysis
Temperature Field Due to a Moving Heat Source: A Moving Mesh Finite Element Analysis
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移动热源引起的温度场：移动网格有限元分析
DOI：
10.1115/1.3169040
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
S. Atluri
中科院分区：
文献类型：
--
作者：
Z. Kuang;S. Atluri
用移动网格有限元程序分析了移动热源(如动态扩展的裂纹尖端附近的过程区或焊接情况下的外部介质)引起的瞬时温度场(由移动的观察者看到)。研究了与温度有关的材料性质的影响，以及通过对流和辐射向周围介质散热的影响。探讨了加工区中的条件可被标记为“等温”或“绝热”的情况。对结构钢中以实际速度扩展的裂纹尖端附近的温升进行了估计。
The transient temperature field (as seen by a moving observer) due to a moving heat source, such as the process zone near a dynamically propagating crack tip or an external agent as in the case of welding, is analyzed by a moving-mesh finite element procedure. The effects of the temperature-dependent material properties, and of the loss of heat to the surrounding medium through convection and radiation, are studied. Situations under which conditions in the process zone may be labeled as “isothermal” or “adiabatic” are explored. Estimates of temperature rise near the tip of a crack propagating at realistic speeds in structural steels are made.