Horizontal Velocity of Variable Gauge Rolling:Theory and Finite Elements Simulation  被引量:5

Horizontal Velocity of Variable Gauge Rolling:Theory and Finite Elements Simulation

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作  者:ZHANG Guang-ji LIU Xiang-hua HU Xian-lei ZHI Ying 

机构地区:[1]State Key Laboratory of Rolling and Automation,Northeastern University

出  处:《Journal of Iron and Steel Research International》2013年第10期10-16,共7页

基  金:Item Sponsored by National Natural Science Foundation of China(51174249,50974039)

摘  要:Within the production chain of longitudinal profiled (LP) plates and tailor rolled blanks (TRB), variable gauge roiling (VGR) represents the vital important forming stage, in which shape and properties are tailored to sat- isfy customers' requirements. It is of vital importance to reveal the relationship between work-piece horizontal veloci- ty and roll vertical velocity during VGR, which is not only a key point to understand the deformation law, but also an important content for setting VGR process parameters. It is proved that the simplified assumption of equal dis- charge per second condition (EDSC) breaks down during VGR. Due to this reason the differential equation of the work-piece horizontal velocity (VGR-V) is performed by keeping the material volume constant. To attain a compre- hensive understanding of this underlying process in detail, numerical approaches based on finite elements method have been performed by utilizing the Abaqus Explicit. Rolling experiment is carried out which indicates that the nu- merical result coincides with the expel'imental result well. A fine spatial discretization of work-piece is essential for special emphasis has to be put on detecting different horizontal velocity of work-piece cross section, often leading to a hundred thousand degrees of freedom even for plane strain calculations. The data obtained by using Abaqus Explicit coincide with the results determined by theory. A theoretical basis on deformation parameters and mechanical param- eters during VGR process is provided.Within the production chain of longitudinal profiled (LP) plates and tailor rolled blanks (TRB), variable gauge roiling (VGR) represents the vital important forming stage, in which shape and properties are tailored to sat- isfy customers' requirements. It is of vital importance to reveal the relationship between work-piece horizontal veloci- ty and roll vertical velocity during VGR, which is not only a key point to understand the deformation law, but also an important content for setting VGR process parameters. It is proved that the simplified assumption of equal dis- charge per second condition (EDSC) breaks down during VGR. Due to this reason the differential equation of the work-piece horizontal velocity (VGR-V) is performed by keeping the material volume constant. To attain a compre- hensive understanding of this underlying process in detail, numerical approaches based on finite elements method have been performed by utilizing the Abaqus Explicit. Rolling experiment is carried out which indicates that the nu- merical result coincides with the expel'imental result well. A fine spatial discretization of work-piece is essential for special emphasis has to be put on detecting different horizontal velocity of work-piece cross section, often leading to a hundred thousand degrees of freedom even for plane strain calculations. The data obtained by using Abaqus Explicit coincide with the results determined by theory. A theoretical basis on deformation parameters and mechanical param- eters during VGR process is provided.

关 键 词:variable gauge rolling horizontal velocity non-linear finite element analysis 

分 类 号:TG335.5[金属学及工艺—金属压力加工]

 

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