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前言重钢五厂的2450轧机是国内近年投产的较大型中板轧机。为进一步提高产品的产量和质量,为实施控制轧制创造条件,了解在承受最大轧制力3000tf时机架各部,特别是应力集中区域的应力和变形是十分必要的。为此,我们对机架进行了平面、三维有限元分析,并对整机进行了三维光弹性分析与之映证。最初用有限元法分析机架,将机架视为平面应力问题,采用常应变三角形单元,其计算结果数值偏小。在远离机架上、下圆角的立柱中段其结界是可用的,但在上、下横梁,特别是压下
Foreword Heavy Steel Wuchang 2450 mill is a large plate mill put into operation in recent years. In order to further improve the output and quality of the products and create the conditions for the implementation of controlled rolling, it is necessary to understand the stress and deformation of the various parts of the rack, especially the stress concentration area, when the maximum rolling force is 3000 tf. To this end, we conducted a plane and three-dimensional finite element analysis of the machine frame, and carried out three-dimensional photoelastic analysis and mapping of the machine. Initially, finite element analysis of the rack, the rack as a plane stress problem, the use of constant strain triangular unit, the numerical results of small. In the far from the rack, the lower corner of the column in the middle of the enchantment is available, but in the upper and lower beams, especially depressing