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首页> 外文期刊>Journal of Heat Transfer >Analytical Solution of Transient Three-Dimensional Temperature Field in a Rotating Cylinder Subject to a Localized Laser Beam
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Analytical Solution of Transient Three-Dimensional Temperature Field in a Rotating Cylinder Subject to a Localized Laser Beam

机译：局域激光束作用下旋转圆柱中瞬态三维温度场的解析解

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摘要

Laser-assisted machining (LAM) is a growing trend in machining of hard to cut materials. In most experimental cases, LAM is carried out in two stages; first, laser and machine parameters are tuned to adjust the temperature at the material removal point (T_mr), and second, the cutting tool is engaged to cut the points that have already been heated by the laser. Alternatively, an analytical model for the prediction of temperature filed can replace lengthy experimentation needed for tuning the material removal temperature. This paper presents an analytical solution to the transient temperature field in a rotating cylinder subject to a localized laser heat source based on Green's functions. The analytical solution is validated by comparing the surface point temperatures to thermal experiments on DIN 1.7225 steel, which shows good agreement in trend and values. Furthermore, a finite element model is developed and verified by the results of the same experiments, providing a more detailed investigation on the performance of the analytical model. The developed analytical scheme can be used to readily calculate pointwise temperatures on workpiece surface and internal points which can be used as a tool for designing machining conditions.
机译：激光辅助加工（LAM）是加工难切削材料的一种增长趋势。在大多数实验情况下，LAM分两个阶段进行：首先，调整激光和机器参数以调整材料去除点（T_mr）的温度，其次，接合切割工具以切割已被激光加热的点。或者，用于预测温度的分析模型可以代替调整材料去除温度所需的冗长实验。本文基于格林函数对旋转圆柱体中受局部激光热源影响的瞬态温度场提出了一种解析解。通过将表面点温度与DIN 1.7225钢上的热实验进行比较，验证了该分析解决方案的有效性，该趋势和值均显示出良好的一致性。此外，通过相同实验的结果开发并验证了有限元模型，从而对分析模型的性能进行了更详细的研究。所开发的分析方案可用于轻松计算工件表面和内部点的逐点温度，可用作设计加工条件的工具。

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  • 来源
    《Journal of Heat Transfer》 |2017年第6期|062701.1-062701.8|共8页
  • 作者

    Mostafa M. Kashani; Mohammad R. Movahhedy; Mohammad T. Ahmadian; Reza Shoia Razavi;

  • 作者单位

    Precision Manufacturing Lab (PML), Department of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran 11365-11155, Iran;

    Professor Mem. ASME Precision Manufacturing Lab, Department of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran 11365-11155, Iran;

    Professor Mem. ASME Department of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran 11365-11155, Iran;

    Associate Professor Department of Materials Engineering, Malek-ashtar University of Technology, Shahin Shahr, Isfahan 83145-115, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    laser-assisted machining; rotating cylinder; temperature field; analytical model; transient solution; Green's function;

    机译：激光辅助加工;旋转圆柱;温度场;解析模型;瞬态解;格林函数;

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