CAJ | 학술논문

基于钢球斜轧成形原理，采用DEFORM-3D有限元软件建立了钢球斜轧成形的有限元模型。相应的实验结果表明有限元模型是可信的。利用有限元结果研究了钢球斜轧成形过程的金属径向和轴向变形规律。研究表明：坯料的金属以周期振荡方式累积变形。在轴线方向上，球体间的连接颈是变形最剧烈的位置，离连接颈越近，金属的径向变形和轴向变形越大。在横截面方向上，球体前半球的金属，离轴线中心越近，径向压缩量越小，轴向位移越大；球体后半球的金属，离轴线中心越近，径向压缩量越小，轴向位移越小。
기우강구사알성형원리，채용DEFORM-3D유한원연건건립료강구사알성형적유한원모형。상응적실험결과표명유한원모형시가신적。이용유한원결과연구료강구사알성형과정적금속경향화축향변형규률。연구표명：배료적금속이주기진탕방식루적변형。재축선방향상，구체간적련접경시변형최극렬적위치，리련접경월근，금속적경향변형화축향변형월대。재횡절면방향상，구체전반구적금속，리축선중심월근，경향압축량월소，축향위이월대；구체후반구적금속，리축선중심월근，경향압축량월소，축향위이월소。
ABSTRACT Based on the principle of steel ball forming by skew rolling, a finite element model of steel ball forming by skew rolling was established by using software DEFORM-3D. This FEM model was proved to be reliable by contrast with laboratory experiment re-sults. Using the data of FEM results, the metal flow laws in both the radial and axial directions were studied. It is found that metal de-formation accumulates in a periodic oscillation way. In the axial direction, deformation at the connecting neck is the most severe, both the radial and axial deformation are larger at the location closer to the connecting neck. In the cross sections, smaller radial compres-sion and larger axial elongation were found at the location closer to the center in the front semi-sphere. Differently, there are smaller axial deformation and radial compression at the location closer to the center in the back semi-sphere.