从三维编织工艺和实际的编织过程出发，针对方形编织结构提出了一种单元几何模型。
For square braiding structures, a representative geometric model of unit cell is presented through studying the actual braiding process.
基于该模型建立了编织工艺参数之间的几何关系。
On the basis of the model , the relations between the braiding parameters were determined.
从挤压成形齿轮的制造工艺链出发，建立了精确模拟分析的工艺过程模型、几何模型、弹塑性有限元模型。
The analysis model, including process chain, geometry of the die, the elastic-plastic finite-element is built according to the practical process.
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