Practical applications of the "energy–triaxiality" state relationship in metal cutting. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Abushawashi, Yalla; Xiao, Xinran; Astakhov, Viktor
• Is Part Of: Machining science and technology. Volume 21:Issue 1(2017)
• Page Start: 1
• Page End: 18
• Publication Date: 2017-01-02
• Subjects: Damage -- fracture -- material constitutive -- metal cutting -- plane strain -- rake angle -- steel 1045 -- triaxiality; Machining -- Periodicals; 671.3505
• DOI: 10.1080/10910344.2015.1133913
• Languages: English
• ISSNs: 1091-0344

Abstract

ABSTRACT: Most of the energy spent on metal cutting is due to the unavoidable plastic deformation of the layer being removed during its transformation into the chip. Based on the new principle of metal cutting being a purposeful fracture process, the dominant parameter that controls this process in orthogonal metal cutting (OMC) is the triaxiality state. Therefore, the chip triaxiality state in the deformation zone can be correlated to the energy of the unwanted plastic deformation for a particular cutting configuration. This article investigates this type of correlation by changing the cutting tool geometry. A series of finite element (FE) simulations were performed for various tool rake angles shows a strong relationship between the stress triaxiality state parameter in the deformation zone and the required cutting force components.