SGER: Fundamental Examination of the Frictional Boundary Conditions in Machining Using Fractals

SGER：使用分形对加工中的摩擦边界条件进行基本检查

• 批准号: 9910219
• 负责人: Shivakumar Raman
• 金额: $ 5万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910219&HistoricalAwards=false
• 关键词: SGER; Fundamental; Examination; Frictional; Boundary

The objective of this Small Grant for Exploratory Research (SGER)project is to develop a universal framework for representing the frictional boundary conditions at the tool-chip interface in machining based on fractal theory. Previous studies conducted using photomicrographs from literature provide justification for this approach. Mathematical models developed in preliminary work will be validated and improved with real experimental data. The fractal behavior of the tool-chip interface will be investigated, and the materials and cutting conditions leading to different fractal dimensions will be quantified. These dimensions will be used to determine the shape, size, location and proportion of sliding/sticking islands at the interface, which will then be used to calculate contact area, cutting forces, total power expended, and cutting temperatures. Comparison with traditional models will be conducted. This project has the potential of drawing new insight into the machining process and generating more accurate models of the process for the prediction of cutting forces, cutting temperatures, and tool wear. If successful, it should benefit cutting tool design, coating material development, and machining parameter selection.

这项用于探索性研究（SGER）项目的小型赠款的目的是开发一个通用框架，以基于分形理论在加工中工具芯片界面的摩擦边界条件。 使用文献显微照片进行的先前研究为这种方法提供了理由。 在初步工作中开发的数学模型将通过实际的实验数据进行验证和改进。 将研究工具芯片界面的分形行为，并将量化导致不同分形尺寸的材料和切割条件。 这些尺寸将用于确定界面处的滑动/粘性岛的形状，大小，位置和比例，然后将其用于计算接触区域，切割力，总功率和切割温度。 将与传统模型进行比较。 该项目具有对加工过程的新见解，并为预测切割力，切割温度和工具磨损的过程的更准确模型。 如果成功，它应该有益于切割工具设计，涂料材料开发和加工参数选择。