SGER: A Hybrid Predictive Model for Cyclic Curled Chip Formation in Machining with Serrations Using Topological Properties

SGER：利用拓扑特性进行锯齿加工中循环卷曲切屑形成的混合预测模型

• 批准号: 0606586
• 负责人: Ibrahim Jawahir
• 金额: --
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-02-01 至 2008-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0606586&HistoricalAwards=false
• 关键词: SGER; Hybrid; Predictive; Model; Cyclic

The research objective of this Small Grant for Exploratory Resesrch (SGER) is to develop a mathematical model for predicting, simulating and animating the cyclic chip formation process in metal machining. This study involves the use of topological properties in the development of new analytical and numerical models for multi-scale (micro, meso and macro) cyclic chip formation process in machining with coated grooved tools. By applying these methods, a systematic analysis will be made to establish the major influencing parameters of product life and product quality in cutting tools and the machined products. Through continued simulation of the chip formation process, and refinement of these models, a combined hybrid predictive model will be developed for predicting machining performance in terms of tool-life and surface integrity, and for simulation and animation of cyclic chip formation involving chip curl and chip breaking using topological changes of the work material in the machining region. Topological classifications of the machined and cutting tool surfaces will be made by taking account of progressive tool-wear and its effects. Experiments will be conducted for validating the predictive model.If successful, this research will open new opportunities for better modeling of other complex manufacturing processes. This new predictive capability and the related product life predictions and enhancement will bring in significant productivity improvement in machining process planning and operations. This novel aspect has far reaching benefits including technology transfer/applications in industry. This project will contribute to the educational mission of the university by providing additional knowledge in this subject area to two students: one graduate student and one undergraduate student. This project will stimulate these engineering students' interest in topology and its applications. This project will also benefit students from underrepresented groups.

这项探索性研究小额赠款（SGER）的研究目标是开发一个数学模型，用于预测，模拟和动画金属加工中的循环切屑形成过程。 本研究涉及使用的拓扑特性的开发新的分析和数值模型的多尺度（微观，介观和宏观）循环切屑形成过程中的加工涂层槽刀具。 通过应用这些方法，将进行系统的分析，以确定在刀具和加工产品的产品寿命和产品质量的主要影响参数。 通过继续模拟切屑形成过程，并细化这些模型，将开发一个组合的混合预测模型，用于预测刀具寿命和表面完整性方面的加工性能，并用于循环切屑形成的模拟和动画，包括切屑卷曲和切屑断裂，使用加工区域中工作材料的拓扑变化。 拓扑分类的加工和切削刀具表面将考虑到渐进的工具磨损及其影响。 实验将进行验证的预测模型。如果成功的话，这项研究将打开新的机会，更好地建模其他复杂的制造过程。 这种新的预测能力以及相关的产品寿命预测和增强将显著提高加工工艺规划和操作的生产率。 这一新的方面具有深远的好处，包括技术转让/工业应用。 该项目将通过向两名学生（一名研究生和一名本科生）提供这一学科领域的额外知识，为大学的教育使命做出贡献。 这个项目将激发这些工科学生对拓扑学及其应用的兴趣。 该项目还将使代表性不足群体的学生受益。