학술논문

PHYSICS-BASED SIMULATION OF HIGH SPEED MACHINING.
Document Type
Article
Source
Machining Science & Technology. Nov2002, Vol. 6 Issue 3, p301-329. 29p. 7 Charts.
Subject
*HIGH-speed machining
*SIMULATION methods & models
*PHYSICS
Language
ISSN
1091-0344
Abstract
Computer simulation of high speed machining processes can provide a unique insight and reduce the number of design iterations required to advance and optimize the process. Predictive modeling of high speed machining of exotic materials has been hindered by the nonlinear behavior of this type of materials at extremely high strain, strain rate, and temperatures. This paper presents a physics-based modeling technology that includes the change in the material constitutive equation and the friction characterization at cutting speeds up to 400 m min-1. The dependence of the accuracy of the predicted parameters, such as the chip formation on cutting forces, chip/tool/workpiece interface temperature, stress and strain distributions are also discussed. The fundamentals of metal cutting were utilized to understand the effect of parameter changes in regimes that are outside current empirical knowledge databases. [ABSTRACT FROM AUTHOR]