用云纹法研究压剪变形

异步轧制是一种新的生产工艺,其近期研究工作的特点之一是,采用压剪变形实验装置进行研究(主要研究力学方面)。从突出主要影响因素、简化研究问题角度考虑,这是必要而有意义的。然而,试件在简化模型中之变形有何特点,简化模型对研究异步轧制有何意义,探讨很少。 本文采用密栅云纹法及样条函数数值磨光法处理实验数据,对压剪状态下试件的变形进行分析。实验在自制模拟导步轧制的压剪变形装置上进行。结果表明,分析压剪状态下的试样变形,对揭示异步轧制本质、合理选择塑性加工方式,在理论上和实际上均具有重要意义。

Study on the Compressing and Shearing Deformation with Fringe Technique

Asymmetric rolling is a new method of plasticworking. Recently it is one of obvious features that the subject is made study of by a device ( the chief about mechanics ) with compressing and shearing deformation. From the viewpoint of stressing main factors and of simplifying the process, it is necessary and significant to use this device.But, with respect to the deformation features of sample on above device and the significancy of above compressing and shearing device for studying asymmetric rolling, it has rarely been considered.This paper shows the results of the compressing and shearing deformation with the Fringe technique and Spline function smoothing the experimental data.Experiment was made on compressing and shearing device simulating asymmetric rolling designed by ourselves.It is proved that analysing the deformation under the compressing and shearing state has important significance of theory and practice for revealing the nature of asymmetric rolling and choosing the appropriate type of plasticworking.