SPH method applied to high speed cutting modelling

Limido, Jérôme; Espinosa, Christine; Salaün, Michel; Lacome, Jean-Luc

doi:10.1016/j.ijmecsci.2006.11.005

Cited by 194 publications

(103 citation statements)

References 11 publications

Supporting

Mentioning

100

Contrasting

Unclassified

Order By: Relevance

“…It is very interesting because the Coulomb friction parameter is often used in FEM to adjust predicted cutting forces with the experimental results [9,18]. The results of the (LS-DYNA) SPH model were compared with experimental data in [12].…”

Section: Basic Principles Of the Sph Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Calamaz

Limido

Nouari

et al. 2009

International Journal of Refractory Metals and Hard Materials

Self Cite

View full text Add to dashboard Cite

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. The aim of this study is to improve the general understanding of tungsten carbide (WC-Co) tool wear under dry machining of the hard-to-cut titanium alloy Ti6Al4V. The chosen approach includes experimental and numerical tests. The experimental part is designed to identify wear mechanisms using cutting force measurements, scanning electron microscope observations and optical profilometer analysis. Machining tests were conducted in the orthogonal cutting framework and showed a strong evolution of the cutting forces and the chip profiles with tool wear. Then, a numerical method has been used in order to model the machining process with both new and worn tools. The use of smoothed particle hydrodynamics model (SPH model) as a numerical tool for a better understanding of the chip formation with worn tools is a key aspect of this work. The predicted chip morphology and the cutting force evolution with respect to the tool wear are qualitatively compared with experimental trends. The chip formation mechanisms during dry cutting process are shown to be quite dependent from the worn tool geometry. These mechanisms explain the high variation of the experimental and numerical feed force between new and worn tools.

show abstract

Section: Basic Principles Of the Sph Methodsmentioning

confidence: 99%

“…It is based on the 2D metal cutting model proposed by Limido [12]. This model uses a Smoothed Particle Hydrodynamics (SPH) method in the frame of the LS-DYNA hydrodynamic software [13].…”

Section: Frameworkmentioning

confidence: 99%

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Calamaz

Limido

Nouari

et al. 2009

International Journal of Refractory Metals and Hard Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…SPH method has been successfully employed in the machining of various ductile materials [14][15][16]. However, simulations of machining of brittle materials using SPH method are very few.…”

Section: Introductionmentioning

confidence: 99%

Investigation of influence of tool rake angle in single point diamond turning of silicon

Mir

Luo

Cheng

et al. 2017

Int J Adv Manuf Technol

View full text Add to dashboard Cite

This paper presents an investigation of the effect of tool rake angle in single point diamond turning (SPDT) of silicon using experimental and simulation methods. Machining trials under the same cutting conditions were carried out using three different rake angle tools. In order to delve further into the rake angle effect on the output parameters including material removal, stresses and crack formation, at the onset of chip formation and steady-state conditions, a simulation study using smoothed particle hydrodynamics (SPH) approach was performed. The simulation results were incorporated and found in good agreement with experimental observations. The results indicate that diamond tool wear rate and surface generation mechanism significantly vary using different rake angle tools. The continuance of compressive and shear deformation sequence at the chip incipient stage governs the high-pressure phase transformation (HPPT) as a function of rake angle and tool wear. The capability of diamond tool to maintain this sequence and required hydrostatic pressure under worn conditions is highly influenced by a change in rake angle. The proportional relationship of cutting force magnitude and tool wear also differs owing to disparate wear pattern which influence distribution of stresses and uniform hydrostatic pressure under the tool cutting edge. This subsequently influences structural phase transformation and therefore frictional resistance to cutting. Mainly frictional groove wear was found dominant for all diamond tools in machining of silicon.

show abstract

“…Details about the SPH formulation can be found in (Liu and Liu, 2010). Limido et al (2007) utilized the LS-DYNA SPH code to model continuous chip formation in aluminum alloy and serrated chip formation in hardened steel. The model predicted chip morphology and cutting forces with errors of 10% to 30%.…”

Section: Introductionmentioning

confidence: 99%

Chip morphology predictions while machining hardened tool steel using finite element and smoothed particles hydrodynamics methods

Umer

Qudeiri

Ashfaq

2016

J. Zhejiang Univ. Sci. A

View full text Add to dashboard Cite

Chip morphology predictions in metal cutting have always been challenging because of the complexity of the various multiphysical phenomena that occur across the tool-chip interface. An accurate prediction of chip morphology is a key factor in the assessment of a particular machining operation with regard to both tool performance and workpiece quality. Although finite element (FE) models are being developed over the last two decades, their capabilities in modeling correct material flow around the tool tip with shear localization are very limited. FE models with an arbitrary Lagrangian Eulerian (ALE) approach are able to simulate correct material flow around the tool tip. However, these models are unable to predict any shear localization based on material flow criteria. On the other hand, FE models with a Lagrangian formulation can simulate shear localization in the chip segments; they need to make use of a mesh-based chip separation criterion that significantly affects material flow around the tool tip. In this study a mesh-free method viz. smoothed particles hydrodynamics (SPH) is implemented to simulate shear localization in the chip while machining hardened steel. Unlike other SPH models developed by some researchers, this model is based on a renormalized formulation that can consider frictional stresses along the tool-chip interface giving a realistic chip shape and material flow. SPH models with different cutting parameters are compared with the traditional FE models and it has been found that the SPH models are good for predicting shear localized chips and do not need any geometric or mesh-based chip separation criteria.

show abstract

SPH method applied to high speed cutting modelling

Cited by 194 publications

References 11 publications

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Investigation of influence of tool rake angle in single point diamond turning of silicon

Chip morphology predictions while machining hardened tool steel using finite element and smoothed particles hydrodynamics methods

Contact Info

Product

Resources

About