楔横轧变形过程中内部空心缺陷产生机理的模拟研究

RESEARCH ON MECHANISM OF INTERIOR-HOLLOW DEFECT DURING THE DEFORMATION OF CROSS WEDGE ROLLING

利用Deform-3D软件对楔横轧变形过程进行了三维有限元模拟仿真,得到了三维变形状态下轧件内部应力、应变场的全部信息和材料的流动形态,揭示了在整个变形过程中轧件内部应力应变状态及其历史演化过程,进而对楔横轧内部空心缺陷产生的机理做出了明确的阐述。

The deformation of the workpiece during cross wedge rolling (CWR) is simulated by using three-dimension finite element soft named deform-3D. The whole information of the workpiece stress and strain field and the material flow discipline are obtained. So the evolvement history of the interior stress and strain state are grasped, and the mechanism of the interior-hollow defect during CWR is explained definitely.