Numerical modeling of metal cutting processes using the particle finite element method (PFEM) and a physically based plasticity model
Number of Authors: 3
2015 (English)In: Particle-based Methods IV: Fundamentals and Applications : Proceedings of the IVInternational Conference on Particle-Based Methods–Fundamentals and Applications held in Barcelona, Spain, 28-30September 2015 / [ed] E. Oñate; M. Bischoff; D.R.J. Owen; P. Wriggers; T. Zhodi, Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2015, 1066-1072 p.Conference paper (Refereed)
Metal cutting is one of the most common metal shaping processes. Specified geometrical and surface properties are obtained by break-up of material and removal by a cutting edge into a chip. The chip formation is associated with large strain, high strain rate and locally high temperature due to adiabatic heating which make the modeling of cutting processes difficult. Furthermore, dissipative plastic and friction work generate high local temperatures. These phenomena together with numerical complications make modeling of metal cutting difficult. Material models, which are crucial in metal cutting simulations, are usually calibrated based on data from material testing. Nevertheless, the magnitude of strain and strain rate involved in metal cutting are several orders higher than those generated from conventional material testing. Therefore, a highly desirable feature is a material model that can be extrapolated outside the calibration range. In this study a physically based plasticity model based on dislocation density and vacancy concentration is used to simulate orthogonal metal cutting of AISI 316L. The material model is implemented into an in-house Particle Finite Element Method software. Numerical simulations are in agreement with experimental results, but also with previous results obtained with the finite element method.
Place, publisher, year, edition, pages
Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2015. 1066-1072 p.
Research subject Solid Mechanics; Material Mechanics
IdentifiersURN: urn:nbn:se:ltu:diva-39507ISI: 000380556100097Local ID: e4af8e04-2a1e-4cb7-a2b2-a64b8a7f5cf9ISBN: 978-84-944244-7-2OAI: oai:DiVA.org:ltu-39507DiVA: diva2:1013020
International Conference on Particle-Based Methods : 28/09/2015 - 30/09/2015
Godkänd; 2015; 20150929 (parj
Validerad; 2016; Nivå 1; 2016-10-06 (andbra)2016-10-032016-10-032016-10-06Bibliographically approved