Development and validation of a new friction model for cutting processes
Development and validation of a new friction model for cutting processes
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DOI：
10.1007/s00170-019-04709-8
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发表时间：
2020-01-25
影响因子：
3.4
通讯作者：
Klocke, Fritz
中科院分区：
文献类型：
--
作者：
Peng, Bingxiao;Bergs, Thomas;Klocke, Fritz
在使用有限元法模拟切屑形成时，刀-屑界面的摩擦模型对预测切屑形状、切削力和切削刀具温度具有重要影响。本文对切削条件下刀-屑界面的摩擦行为进行了实验研究和数值模拟。摩擦测试是用不同的工件材料（AISI 1045和直接时效Inconel 718）与未涂覆和涂覆的硬质合金切削刀具组合进行的。施加各种过程法向力以实现不同的接触压力。实验结果表明，相对速度，接触压力，和接触温度的表观摩擦系数的强烈影响。此外，提出了一种先进的摩擦模型，并验证了三维有限元模拟的摩擦试验。
The friction model in the tool-chip interface has significant influences on predicting chip forms, cutting forces, and cutting tool temperatures, when simulating the chip formation using the finite element method. In this paper, the friction behavior in the tool-chip interface was investigated experimentally and numerically under cutting conditions. The friction tests were performed with different workpiece materials (AISI 1045 and Direct Aged Inconel 718) in combination with uncoated and coated cemented carbide cutting tools. Various process normal forces were applied to achieve different contact pressures. The experimental results showed strong influences of relative speeds, contact pressures, and contact temperatures on apparent friction coefficients. In addition, an advanced friction model was proposed and validated with 3D FE-simulations of the friction test.