Integrating with experimental device, this paper analyses the lay out of pressure measuring tube in the experiment under the sudden expansion of partial resistance so as to obtain the best effect.
结合实验装置，对突然扩大的局部阻力损失实验中，测压管位置的布设进行分析和研究，以求得最佳的实验效果。
Workpiece's spring-back is considered in this paper, deformation's history is assured in the next pass, and then square rectangle tube in continue roll forming process lay a foundation.
文中考虑了轧件的弹复，保证了下一道次变形历史的延续，从而为真实模拟方矩形连续辊弯成形过程奠定基础。
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