The Role of Fracture in Metal Cutting Chip Formation

断裂在金属切削切屑形成中的作用

• 批准号: 8817766
• 负责人: Milton Shaw
• 金额: $ 11.64万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-15 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817766&HistoricalAwards=false
• 关键词: Role; Fracture; Metal; Cutting; Chip

This research project is directed towards the development of an important new criterion for establishing the machinability of a work material as well as to provide an important new method of predicting the shear angle for a given set of cutting conditions. This investigation involves tests on a wide range of materials and conditions and includes a simple noncutting test that gives the rate of increase of shear stress with shear strain for large strains. The results will be used to better understand the relation between workpiece chemistry and structure and the slope of the shear stress-shear strain curve for large strains. The results will also be used to verify a new shear angle criterion. An important secondary objective of this work is to provide a better understanding of basic mechanisms involved in large strain deformation.

该研究项目旨在开发 一个重要的新标准，建立机械加工性 一种工作材料，以及提供一种重要的新方法， 预测给定切削条件下的剪切角。 这项调查涉及对各种材料的测试 和条件，并包括一个简单的非切割测试， 剪切应力随剪切应变增大速率 菌株 结果将用于更好地了解 工件化学成分和结构与斜率之间的关系 剪应力-剪应变曲线的最大值。 的 结果还将用于验证新的剪切角准则。 这项工作的一个重要的次要目标是提供一个 更好地理解大应变的基本机制 变形