A new approach of high speed cutting modelling: SPH method

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

doi:10.1051/jp4:2006134182

Cited by 15 publications

(4 citation statements)

References 4 publications

(3 reference statements)

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“…This 9.5 % deviation between simulation and experiment can be explained by considering the uncertainties in experimental results as explained in [17]. Compared with other works [5,6,9], the results are of considerable accuracy. As mentioned, there is a general trend that the error in the prediction of the normal force is one order of magnitude larger than the error in the prediction of the cutting force.…”

Section: Process Forcesmentioning

confidence: 79%

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0612 Predicting the Springback of Metal Cutting Operations Using Mesh Free Methods

Imayasu

Röthlin

Akbari

et al. 2015

LEM21

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The metal cutting process remains one of the most widely used methods in manufacturing. Computer simulations of metal cutting are a valuable tool to understand the physics involved and to predict the outcome of such processes. One of the most important results of such simulations is the prediction of process forces. However, there is a general trend of the normal forces being underreported, independent of the numerical method chosen. Supposed factors which affect the normal forces are the material compression underneath the rounded cutting tool edge and the springback accompanied by the compression. The focus of this work is thus to simulate the process forces and the springback employing mesh free methods. The results are verified using experimental data. Predicted process forces and springback show good agreement with the experimental data.

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Section: Process Forcesmentioning

confidence: 79%

“…The SPH was first used in metal cutting simulation in [5], using the LSDYNA software. Further work can be found in [6].…”

Section: Introductionmentioning

confidence: 99%

0612 Predicting the Springback of Metal Cutting Operations Using Mesh Free Methods

Imayasu

Röthlin

Akbari

et al. 2015

LEM21

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“…Smoothed particles hydrodynamics (SPH) is a Lagrangian mesh-free method that is not based on elements, 10,11 and it has been proven that SPH can effectively handle very large deformation without issues often encountered in FEM models. 12–14 Therefore, in our work, we adopt the SPH numerical method to simulate this cutting process.…”

Section: Introductionmentioning

confidence: 99%

A smooth particle hydrodynamic model for two-dimensional numerical simulation of Ti–6Al–4V serrated chip deformation based on TANH constitutive law

Niu

Sun

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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The saw-tooth chip formation is one of the main machining characteristics in cutting of titanium alloys. The numerical simulation of saw-tooth chip formation, however, is still not accurate, since most of these numerical simulation models are based on traditional finite element method, which have difficulties in handling extremely large deformation that always occurs in the cutting process. Furthermore, these models adopt the Johnson–Cook damage constitutive law that is implemented in commercial codes such as ABAQUS® and LS-DYNA® to describe the dynamic mechanical properties of material, but Johnson–Cook damage constitutive law cannot account for the material of behavior due to strain softening and the dynamic recrystallization mechanism that occurs in the cutting process of Ti–6Al–4. Therefore, this work introduces a material constitutive model named hyperbolic tangent (TANH) and an improved smooth particle hydrodynamics method, and then develops an improved cutting model for Ti–6Al–4V titanium alloy through our in-house code to predict saw-tooth chip morphology and cutting forces. When compared to the experiments and Johnson–Cook damage model, the improved cutting model better explains and predicts the shear localized saw-tooth chip deformation as well as cutting forces.

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“…The advantage of these methods is that they do not suffer from localized large deformations as do the mesh-based methods. The Lagrangian SPH particle method for example [15] allows to use classical continuum mechanics material models, so that it is appropriate to self-generate a natural separation of matter and fragments as soon as the material reaches a certain state criteria defined in the frame of the classical continuum mechanics [16]. The SPH method is in particular well suited and robust enough to represent matter de-cohesion, holes, or matter accumulation due to shear and compression in ductile materials, since it is a continuous particle method (through the kernel approximation).…”

Section: Introductionmentioning

confidence: 99%

Coupling continuous damage and debris fragmentation for energy absorption prediction by cfrp structures during crushing

et al. 2014

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Energy absorption during crushing is evaluated using a thermodynamic based continuum damage model inspired from the Matzenmiller-Lubliner-Taylors model. It was found that for crash-worthiness applications, it is necessary to couple the progressive ruin of the material to a representation of the matter openings and debris generation. Element kill technique (erosion) and/or cohesive elements are efficient but not predictive. A technique switching finite elements into discrete particles at rupture is used to create debris and accumulated mater during the crushing of the structure. Switching criteria are evaluated using the contribution of the different ruin modes in the damage evolution, energy absorption, and reaction force generation.

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A new approach of high speed cutting modelling: SPH method

Cited by 15 publications

References 4 publications

0612 Predicting the Springback of Metal Cutting Operations Using Mesh Free Methods

0612 Predicting the Springback of Metal Cutting Operations Using Mesh Free Methods

A smooth particle hydrodynamic model for two-dimensional numerical simulation of Ti–6Al–4V serrated chip deformation based on TANH constitutive law

Coupling continuous damage and debris fragmentation for energy absorption prediction by cfrp structures during crushing

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