Analysis on Shear Deformation for High Manganese Austenite Steel during Hot Asymmetrical Rolling Process Using Finite Element Method
Analysis on Shear Deformation for High Manganese Austenite Steel during Hot Asymmetrical Rolling Process Using Finite Element Method
复制标题
高锰奥氏体钢不对称热轧过程剪切变形有限元分析
DOI：
10.1016/s1006-706x(15)30101-1
复制
发表时间：
2015-11-01
影响因子：
2.5
通讯作者：
Li, Chang-sheng
中科院分区：
文献类型：
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作者：
Sui, Feng-li;Wang, Xin;Li, Chang-sheng
采用刚塑性有限元法分析了高锰奥氏体钢热异步轧制过程中变形区的剪应力场。讨论了上、下辊速比、轧件初始温度和压下率等轧制参数对上、中、下三层节点剪切变形的影响。随着轧制参数的变化，上下两层均出现明显的剪切变形，但中心层只有在速比大于1.00时才出现剪切变形，且该层剪切应力的绝对值随轧制参数的变化而变化。建立了反映中间层最大绝对剪应力变化的数学模型，利用该模型可以方便地计算中间层最大绝对剪应力，从而设计出合适的轧制工艺。
Based on the rigid-plastic finite element method (FEM), the shear stress field of deformation region for high manganese austenite steel during hot asymmetrical rolling process was analyzed. The influences of rolling parameters, such as the velocity ratio of upper to lower rolls, the initial temperature of workpiece and the reduction rate, on the shear deformation of three nodes in the upper, center and lower layers were discussed. As the rolling parameters change, distinct shear deformation appears in the upper and lower layers, but the shear deformation in the center layer appears only when the velocity ratio is more than 1.00, and the absolute value of the shear stress in this layer is changed with rolling parameters. A mathematical model which reflected the change of the maximal absolute shear stress for the center layer was established, by which the maximal absolute shear stress for the center layer can be easily calculated and the appropriate rolling technology can be designed.