CSP结晶器内初生坯壳的应力计算模型

Stress Calculation Model of Initial Shell in CSP Mold

为研究结晶器振动对初生坯壳应力状态的影响,利用Marc软件建立了结晶器内初生凝壳的应力计算模型,分析了振动过程中凝壳上应力和应变的分布规律。模拟结果表明横向上最大应力和应变出现在振动的波峰时刻,宽面中部比边部的应力略高;而纵向最大拉应力和应变出现在振动的波谷时刻,纵向拉应力在凸弧位置出现拉压应力的交变边界,在振动波谷和振动的半周期时,边界内铸坯受压应力,边界外铸坯受拉应力作用。

In order to study the effect of mold oscillation on initial shell stress state, stress simulation model was set up by using the Marc software. The stress and strain distribution rules on initial shell in the process of mold oscillation was analyzed. The results indicate that latitudinal stress and stain reach its climax in the oscillation wave crest, and the stress in the middle of wide side was larger than that on the sides. While longitudinal stress and strain reach its climax in oscillation trough, alternate boundary of tensile and compressive longitudinal stress occurred at the protruding arc of the wide side. In oscillation trough and half period, the stress in the shell of the inner boundary was compressive, while that out of the boundary was tensile.