铝型材出口速度分布的数值模拟

铝型材挤压过程中的出口速度，是模具优化设计的重要参数之一，型材出口速度不均的原因之一是模具设计不当。为了获得高质量的挤压制品，对模具出口区域速度分布的研究是必须的。本文采用DEFORM3D对铝型材进行了3D模拟，获得了在模具制造之间铝型材的出口速度。数值模拟的结果得到了实验的验证，这对优化模具过程是非常重要的。

Numerical simulation of distribution of exit velocities of aluminum profiles extrusion

The exit velocities in the process of aluminum profiles extrusion appear to be the most important parameters for optimal die design. Incorrect die design is one of the reasons for different velocities in profiles. To receive extruded product with high quality, it is necessary to know the arrangement of the velocity profile at the outlet of die. The deformation process of aluminum profiles is simulated by finite element software, DEFORM-3D ,which gives us an opportunity to get exit velocities of profiles before the manufacturing of die. Numerical simulation results are confirmed by experimental procedure in real production conditions, which is very important for optimal die design process.