可逆表面塑性变形下刀具接触区压印几何参数和压力的评价

S. Zaides, H. Nguyen
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引用次数: 0

摘要

本文介绍了在静冲击和反向冲击下,反向表面塑性变形参数对塑印几何特性和刀具接触区压力的影响的建模和确定结果。利用三维设计软件SOLID WORKS-2019和ANSYS-19.1进行计算建模,建立接触区有限元模型,根据刀具几何形状、刀具反转频率、刀具初始安装角和刀具反转角的幅值,确定刀具塑性压痕的几何特征和刀具与工件表面的接触压力。根据所得结果,为了增加刀具与工件接触区域的压力,从而影响工件表面微粗糙度的硬化和平滑程度以及压残余应力的形成,建议采用以下参数和硬化方式:工作辊直径20 - 30mm,型材半径2 - 2.5 mm,工作辊型材顶距1.5-2 mm,工作辊初始安装角90°,工作辊反转角幅度±6 -±8°,工作辊反转速度200-240双冲程/min。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of the imprint geometric parameters and pressure in the working tool contact zone under the reversible surface plastic deformation
The article presents the results of modeling and determining the influence of the parameters of reverse surface plastic deformation on the geometric characteristics of the plastic imprint and the pressure in the contact zone of the working tool under static and reverse impact. Using the software for 3D design SOLID WORKS-2019 and computational modeling in ANSYS-19.1, a finite element model of the contact zone was built to determine the geometric characteristics of the plastic indentation and the contact pressure between the working tool and the surface of the workpiece, depending on the geometry of the working tool, reversing frequency its rotation, the initial angle of installation and the amplitude of the angle of reverse rotation of the working tool. Based on the obtained results, to increase the pressure in the contact zone of the working tool with the workpiece, which affects the degree of hardening and smoothing of microroughnesses of the workpiece surface and the formation of compressive residual stresses, it is recommended to use the following parameters and hardening modes: working roller with a diameter of 20–30 mm, with a profile radius of 2 –2.5 mm, distance between tops of working roller profile 1.5–2 mm, initial installation angle of the working roller 90о, amplitude of the reverse rotation angle of the working roller ±6 – ±8о and reverse speed of the working roller 200–240 double strokes/min.
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