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张华, 潘际銮. 基于二维焊接温度场检测的三维温度场计算机模拟[J]. 焊接学报, 1999, (4): 225-232.
引用本文: 张华, 潘际銮. 基于二维焊接温度场检测的三维温度场计算机模拟[J]. 焊接学报, 1999, (4): 225-232.
Zhang Hua, Pan Jiluan. 3D Simulation of Computer for Weld Temperature Field Based on 2D Measurement[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1999, (4): 225-232.
Citation: Zhang Hua, Pan Jiluan. 3D Simulation of Computer for Weld Temperature Field Based on 2D Measurement[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1999, (4): 225-232.

基于二维焊接温度场检测的三维温度场计算机模拟

3D Simulation of Computer for Weld Temperature Field Based on 2D Measurement

  • 摘要: 采用图象比色法,建立了焊接温度场实时检测系统,快速获取了二维焊接温度场分布。对于低碳钢薄板TIG焊,利用实际检测二维温度场分布结果,对各种热源分析模型进行了验证,得到双椭圆热源分布模型二维温度场计算结果与实际温度检测结果最为接近。利用双椭圆热源分布的数值计算模型和实际检测二维温度场分布结果作为边界条件,获得了整个焊件更宽温度范围和三维温度场分布的在线模拟。正反熔宽模拟计算结果与实际的结果吻合。

     

    Abstract: Real-time measuring system for weld temperature field is developed by colorimetric method using ICCD images and 2D temperature field distribution is achieved quickly by using the system. For TIG welding of thin plate on mild steel, various sources analytical models is verified by the 2D measured results. The 2D computed temperature by using heat source model of double ellipsoidal Gaussian distribution gives best agreement with the measured value. Wider range temperature and 3D temperature field distribution is on line simulated by using the 3D temperature field numerical computed heat source model of double ellipsoidal Gaussian distribution and the measured 2D temperature field distribution as the boundary condition The agreement between the theoretically simulated and experimentally measured weld width is shown excellently.

     

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