内螺纹复合振动挤压成形过程数值模拟

Numerical Simulation on Vibration Extrusion Forming Process of Internal Thread

利用DEFORM-3D软件建立内螺纹复合振动挤压有限元模型,对其成形过程进行数值模拟。通过仿真模拟,得到振动挤压内螺纹的牙形,再现了复合内螺纹振动挤压三维成形过程。同时,可以分析内螺纹成形过程中的等效应力应变和金属流动速度场的分布规律。通过比较振动挤压与普通挤压的扭矩,得出振动挤压的扭矩明显减小。

The finite element m odel of the low-frequency vibration cold extrusion of internal thread was established by DEFORM-3D software,and the numerical simulation of the forming process was carried out.The 3D forming process of？the vibration extrusion for internal thread was recreated.The equivalent stress and strain in the process of internal thread forming was analyzed,and the distribution law of metal flow velocity field and the internal thread vibration cold extrusion forming mechanism were discussed.The results show that the torque of vibration extrusion decreases obviously.