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首页> 外文期刊>Russian engineering research >METAL-CUTTING TOOLS: MODELING THE TOOL WEAR PROCESS WITH INTEGRAL OPERATORS
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METAL-CUTTING TOOLS: MODELING THE TOOL WEAR PROCESS WITH INTEGRAL OPERATORS

机译:金属切削刀具:使用集成算子对刀具磨损过程进行建模

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摘要

Following the motion separation principle, we introduce the aggregated phase coordinates (APCs), for which we shall approximate the kernels of the operators of the type (2). With the introduction of the APCs, it is necessary to consider that the work and the current power of the dissipative forces manifest two opposing tendencies. On the one hand, they lead to the accumulation of numerous defects on the surface and in the near-surface layer of the CT in the regions of the contact with the chip on the front surface and with the workpiece on the back surface. This is the process of the accumulation of the fatigue defects in the structure of the material of the CT that is determined by the work of the cyclic components of the forces and by the activation of the surface layers that leads to the exchange of mass between the surface of the CT and the ambient medium (for example, as a result of the stimulation of the diffusion processes, the tribochemical reactions, and so on). On the other hand, they also cause positive transformations in the cutting zone, since the dissipative medium that is created leads to increase of the potential barriers and hindering of the energy and mass exchange between the surface of the CT and the ambient medium. Moreover, a certain power of the dissipative forces is required for forming the dissipative forces and maintaining the potential barriers.
机译:遵循运动分离原理,我们引入聚合的相位坐标(APC),为此我们将近似类型(2)的算子的核。随着APC的引入,有必要考虑耗散力的功和当前力量表现出两种相反的趋势。一方面,它们导致在与表面上的切屑和背面上的工件接触的区域中,在CT的表面和近表面层中积累了大量缺陷。这是在CT材料的结构中累积疲劳缺陷的过程,该过程由力的周期性分量的作用以及表面层的激活所决定,从而导致表面之间的质量交换。 CT表面和周围介质(例如,由于刺激了扩散过程,摩擦化学反应等)。另一方面,它们也会在切削区域中引起正向转变,因为生成的耗散介质会导致势垒增加,并阻碍CT表面与周围介质之间的能量和质量交换。而且,为了形成耗散力并保持势垒,需要一定的耗散力功率。

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