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Numerical simulation of weld metal by Ultra-Narrow Gap Arc Welding

机译：超窄缝电弧焊对焊接金属的数值模拟

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摘要

The ultra narrow gap welding process is suitable to the thick plate, ultra-thick plate welding with the characteristic of highly effective, high quality, low cost, low energy consumption and so on, and is easy to realize the mechanization and the automation. In this paper, the numerical simulation and technical experiment are used to study the form, grow and distribution regulation of the welding temperature field, stress field in welding joint with UNG MAW. Using the calculation to the thickness of 32mm, an example to simulate the magnitude and distribution of the residual stress in welding joint is given. Research shows that it is an effective analysis method to heat process and mechanic behavior in the welding by using finite element method numerical simulation and few experiments.
机译：超窄间隙焊接工艺适用于厚板，超厚板焊接，具有高效，高质量，低成本，低能耗等特点，易于实现机械化和自动化。本文通过数值模拟和技术实验研究了UNG MAW焊接接头的焊接温度场，应力场的形成，生长和分布规律。通过对32mm厚度的计算，给出了一个模拟焊接接头残余应力的大小和分布的例子。研究表明，通过有限元数值模拟和少量实验，它是一种有效的分析焊接过程中热过程和力学行为的方法。

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