Abstract A three-dimensional transient simulation was conducted with comprehensive models of the laser welding process with a combination of wire feeding and one-dimensional sinusoidal beam oscillation. Both a realistic filler wire feeding and simultaneous melting by oscillating laser beam were considered. The buttonhole formation, which was shown in the simulations, was affected by the shape of the molten filler wire, e.g. the length and angle. The buttonholes formed at higher oscillation frequencies and became clearer with increasing oscillation frequency. The so-called chopping frequency of the wire, found in the frequency domain through Fourier analysis, became more dominant with increasing oscillation frequency. The wire chopping process seems to affect the number of multiple reflections, the power absorption, and the buttonhole behavior.

中文翻译：

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扣眼焊接中振荡频率影响的数值研究

摘要 结合送丝和一维正弦光束振荡，利用激光焊接过程的综合模型进行了三维瞬态仿真。既考虑了现实的填充焊丝进料，也考虑了通过振荡激光束同时熔化。模拟中显示的扣眼形成受熔融填充焊丝形状的影响，例如长度和角度。扣眼在较高的振荡频率下形成，并且随着振荡频率的增加而变得更清晰。通过傅立叶分析在频域中发现的所谓的导线斩波频率随着振荡频率的增加而变得更加重要。线切割过程似乎会影响多次反射的次数、功率吸收和扣眼行为。