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连铸过程连铸坯表面裂纹是影响连铸坯质量的重要问题。本文对连铸结晶器振动过程进行了有限元模拟，获得了结晶器振动过程不同阶段连铸坯表层应力分布情况，分析了连铸过程结晶器锥度、结晶器与连铸坯之间摩擦系数、连铸坯拉速和连铸坯厚度对连铸坯表层应力的影响。研究发现，振动过程中结晶器末端附近区域连铸坯表层出现应力集中区域，这可能是连铸坯出现振痕和裂纹扩展的原因之一。随着结晶器锥度减小和连铸坯宽度的增加，连铸坯表层最大应力增加；而连铸坯拉速和连铸坯与结晶器之间摩擦对连铸坯表层最大应力影响很小。

Surface cracks on slab are one of the important quality problems during continuous casting. In this paper, the vibrating process of crystallizer during continuous casting was carried out by using the finite element method, and the stresses near slab surface at different stages were analyzed under various taper ratios of crystallizer, friction coefficients between crystallizer and slab, pulling speeds of slab, and slab widths. Results show that the stress concentration appears in the slab surface near the tail end of crystallizer, which might be one of the reasons that cause vibration mark and propagation of surface cracks. The maximum stress in slab surface increases with decreasing the taper ratio of crystallizer, and with increasing the slab width. And influence of the pulling speed of slab and the friction coefficient between slab and crystallizer on the maximum stress in slab is slight.