【摘要】A three-dimensional heat flux model for deep-penetrating electron beam welding(EBW) is established to mathematically describe the physical heat generation process during interaction between electrons and the dynamic molten pool free surface. Monte Carlo method is used to determine the electron-target interaction, and random distribution of initial electrons, progressive trajectory tracing and electron backscattering models are used to describe the spatial distribution of electrons absorption. The model is verified in preset keyholes and applied in the simulation on electron beam welding process, and the calculated bead shape shows a good consistency with experimental results.
【关键词】
《建筑知识》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中国医疗管理科学》 2015-05-12
《中外医疗》 2015-07-06
《数字家庭》 2015-07-03
《中外医疗》 2015-07-06
《重庆高教研究》 2015-06-26
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