摘要本论文主要是围绕扭转数值模拟展开，使用 DEFORM-3D 程序，对旋转过程进行了有限的模拟和研究。不同旋转速度对数值模拟结果的影响。首先对扭转数值模拟所用材料 Q235 进行了分析，查询相关文献得到了其本构方程和弹塑性相关参数，导入 DEFORM-3D 软件建立了 Q235 材料，丰富了软件材料库。其次建立了扭转仿真有限元模型，熟悉了 DEFORM-3D 有限元模拟软件的基本操作。最后，完成了扭转数值模拟，探究了不同旋转速度对模拟结果的影响。扭转中的旋转速度很大程度力影响着结果中速度流场、等效应力场、扭矩等方面。随旋转速度的增加，最大应力也随着增大；扭矩随着转速的增加而增加，而且会跟随着旋转速度的不断增强，其材料流动速度也随着增大。关键词：Q235 钢;DEFORM-3D;数值模拟；扭转ABSTRACTThis thesis mainly focuses on the torsion numerical simulation. The DEFORM-3D software is used to simulate the torsion process, and the effects of different rotation speeds on the numerical simulation results are explored.Firstly, the material Q235 used in torsional numerical simulation was analyzed. The constitutive equations and elastoplastic related parameters were obtained by querying the relevant literature. The Q235 material was established by DEFORM-3D software, which enriched the software material library.Secondly, the torsion simulation finite element model is established, and the basic operation of DEFORM-3D finite element simulation software is familiar.Finally, the torsion numerical simulation was completed and the effects of different rotation speeds on the simulation results were explored. The rotational speed in the torsion greatly affects the velocity flow field, equivalent stress field, torque, etc. in the result. With the increase of the rotational speed, the maximum stress also increases; as the rotational speed increases, the torque also increases; as the rotational speed increases, the material flow velocity also increases.Key words: Q...
