The investigation of the contact responses is the key for evaluating the local wear of dies in the plastic forming process. This paper investigated the contact load distributions and evolutions of the roller cavities in the compressor blade rolling process by the FEM. It was the first study to quantify the distributions and evolutions of the contact responses for rolling irregular components. The results indicated that the maximum contact pressure is generally present at the center of the contact interfaces, and the magnitudes of contact pressure decreased with evolution of the blade rolling process. The rolling contact interfaces can be divided into the backward slip zone, the stick zone, and the forward slip zone based on the shear stress distributions. The stick zone was a narrow belt which separated the forward and the backward slip zone, and the shear stress in the stick zone was nearly zero. The shear stress magnitudes in the forward slip zone were smaller than those in the backward slip zone, and the directions of shear stress in forward and backward slip zones were adverse. The magnitudes of shear stress over the forward and backward slip zones decreased with evolution of the blade rolling process. The distributions of local sliding were in a V-shape, the local sliding in the stick zone was nearly zero, and the bigger sliding in backward and forward slip zones was present at the boundaries of rolling entrance and exit sections. The local sliding velocity magnitudes in the backward slip zones were always bigger than those in the forward slip zones, and the magnitudes of local sliding at the rolling entrance sections were bigger than those at the rolling exit sections. In general, the local sliding velocity magnitudes increased firstly and decreased sharply at 2T/3. The current paper develops the distributions and evolutions of contact responses in the blade rolling process. The contact responses can be used for studying the wear of roller cavities to avoid the accuracy inconsistency of the shaped blade.

中文翻译：

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研究压气机叶片轧制过程中辊腔表面的接触响应

接触响应的研究是评估模具在塑料成型过程中局部磨损的关键。本文利用有限元方法研究了压气机叶片轧制过程中辊腔的接触载荷分布和演变。这是第一项量化滚动不规则部件接触响应的分布和演变的研究。结果表明，最大接触压力通常存在于接触界面的中心，并且随着叶片轧制过程的发展，接触压力的幅度减小。根据剪切应力分布，滚动接触界面可分为后滑区域，粘着区域和前滑区域。摇杆区是一条狭窄的皮带，将向前和向后的滑移区分开，棒区的剪切应力几乎为零。前滑区的剪应力大小小于后滑区的剪应力大小，前滑区和后滑区的剪应力方向相反。随着叶片滚动过程的发展，向前和向后滑动区域上的剪应力的大小减小。局部滑动的分布呈V形，在棒区的局部滑动几乎为零，在前后滚动区的边界处存在较大的滑动。后滑动区的局部滑动速度幅值总是大于前滑动区的局部滑动速度幅值，并且在滚动入口区的局部滑动幅值大于在滚动出口区的局部滑动幅值。T / 3。目前的论文发展了叶片滚动过程中接触响应的分布和演变。接触响应可用于研究辊腔的磨损，以避免成形刀片的精度不一致。