The three dimension flow field in the triple-screw extruder with triangle configuration is the research objects, including velocity field, pressure field and shear rate field etc.

本课题以三角形排列的三螺杆挤出机三维流场为研究目标，研究内容包括速度场、压力场、剪切速率场等。

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Hence, three-dimension plastic flow problems are translated into two-dimension problems, and the plastic velocity field function is given in special-shaped extruding.

将三维塑性流动问题转化为简单二维问题，求解了异型挤压塑性速度场函数。

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In this paper, the characteristics and content of drawing technology and its process flow under three-dimension CAD conditions are presented.

介绍了汽车车身覆盖件的拉延工艺特点和内容，以及在三维CAD环境下汽车覆盖件的拉延工艺设计制造流程。

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