Change search
Link to record
Permanent link

Direct link
Rodriguez Prieto, Juan ManuelORCID iD iconorcid.org/0000-0003-3865-1426
Alternative names
Publications (10 of 15) Show all publications
Sandin, O., Rodriguez, J. M., Larour, P., Parareda, S., Frómeta, D., Hammarberg, S., . . . Casellas, D. (2024). A particle finite element method approach to model shear cutting of high-strength steel sheets. Computational Particle Mechanics
Open this publication in new window or tab >>A particle finite element method approach to model shear cutting of high-strength steel sheets
Show others...
2024 (English)In: Computational Particle Mechanics, ISSN 2196-4378Article in journal (Refereed) Epub ahead of print
Place, publisher, year, edition, pages
Springer Nature, 2024
National Category
Applied Mechanics Other Materials Engineering
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-104322 (URN)10.1007/s40571-023-00708-5 (DOI)001156076500001 ()2-s2.0-85184256463 (Scopus ID)
Note

Funder: Horizon 2020 (101006844); RFCS (847213);

Available from: 2024-02-21 Created: 2024-02-21 Last updated: 2024-02-21
Sandin, O., Rodriguez Prieto, J. M., Hammarberg, S. & Casellas, D. (2023). Numerical modelling of shear cutting using particle methods. In: Nader Asnafi, Lars-Erik Lindgren (Ed.), IOP Conference Series: Materials Science and Engineering: . Paper presented at 42nd Conference of the International Deep Drawing Research Group (IDDRG), June 19-22, 2023, Luleå, Sweden. Institute of Physics (IOP), 1284, Article ID 012048.
Open this publication in new window or tab >>Numerical modelling of shear cutting using particle methods
2023 (English)In: IOP Conference Series: Materials Science and Engineering / [ed] Nader Asnafi, Lars-Erik Lindgren, Institute of Physics (IOP), 2023, Vol. 1284, article id 012048Conference paper, Published paper (Refereed)
Abstract [en]

The use of Advanced High Strength Steel (AHSS) allows for lightweighting of sheet steel components, with maintained structural integrity of the part. However, AHSS grades show limitations in edge crack resistance, primarily influenced by sheared edge damage introduced by the shear cutting process. Numerical modelling of the shear cutting process can aid the understanding of the sheared edge damage, thus avoiding unforeseen edge cracking in the subsequent cold forming. However, the extreme deformations of the blank during the shear cutting process are likely to cause numerical instabilities and divergence using conventional Finite Element modelling. To overcome these challenges, this work presents the use of a particle-based numerical modelling method called the Particle Finite Element Method (PFEM). PFEM accurately solves some of the challenges encountered in shear cutting with the standard Finite Element method, such as large deformation, angular distortions, generation of new boundaries and presents an efficient way of transfer historical information from the old to the new mesh, minimising the results diffusion. The present work shows prediction of cut edge morphology of AHSS using a PFEM modelling scheme, where the numerical results are verified against experiments. With these results, the authors show new possibilities to obtain accurate numerical prediction of the shear cutting process, which promotes further advances in prediction of edge damaged related to shear cutting of AHSS.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2023
Series
IOP Conference Series-Materials Science and Engineering, ISSN 1757-8981, E-ISSN 1757-899X
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-99470 (URN)10.1088/1757-899X/1284/1/012048 (DOI)001017824300048 ()
Conference
42nd Conference of the International Deep Drawing Research Group (IDDRG), June 19-22, 2023, Luleå, Sweden
Note

Licens fulltext: CC BY License

Available from: 2023-08-10 Created: 2023-08-10 Last updated: 2023-09-05Bibliographically approved
Rodriguez Prieto, J. M., Larsson, S. & Afrasiabi, M. (2023). Thermomechanical Simulation of Orthogonal Metal Cutting with PFEM and SPH Using a Temperature-Dependent Friction Coefficient: A Comparative Study. Materials, 16(10), Article ID 3702.
Open this publication in new window or tab >>Thermomechanical Simulation of Orthogonal Metal Cutting with PFEM and SPH Using a Temperature-Dependent Friction Coefficient: A Comparative Study
2023 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 16, no 10, article id 3702Article in journal (Refereed) Published
Abstract [en]

In this work, we apply the Particle Finite Element Method (PFEM) and Smoothed Particle Hydrodynamics (SPH) to simulate the orthogonal cutting chip formation of two workpiece materials, i.e., AISI 1045 steel and Ti6Al4V titanium alloy. A modified Johnson–Cook constitutive model is used to model the plastic behavior of the two workpiece materials. No damage or strain softening is included in the model. The friction between the workpiece and the tool is modeled following Coulomb’s law with a temperature-dependent coefficient. The accuracy of PFEM and SPH in predicting thermomechanical loads at various cutting speeds and depths against the experimental data are compared. The results show that both numerical methods can predict the rake face temperature of AISI 1045 with errors less than 34%. For Ti6Al4V, however, the temperature prediction errors are significantly higher than those of the steel alloy. Errors in force prediction were in the range of 10% to 76% for both methods, which compare very well with those reported in the literature. This investigation infers that the Ti6Al4V behavior under machining conditions is difficult to model on the cutting scale irrespective of the choice of numerical method.

Place, publisher, year, edition, pages
MDPI, 2023
Keywords
metal cutting, numerical simulation, particle finite element method (PFEM), smoothed particle hydrodynamics (SPH), temperature-dependent friction
National Category
Applied Mechanics Other Materials Engineering
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-97171 (URN)10.3390/ma16103702 (DOI)000997884800001 ()2-s2.0-85160348895 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-05-16 (hanlid)

Available from: 2023-05-16 Created: 2023-05-16 Last updated: 2024-03-07Bibliographically approved
Sridhar, P., Rodríguez Prieto, J. M. & de Payrebrune, K. M. (2022). Modeling Grinding Processes-Mesh or Mesh-Free Methods, 2D or 3D Approach?. Journal of Manufacturing and Materials Processing, 6(5), Article ID 120.
Open this publication in new window or tab >>Modeling Grinding Processes-Mesh or Mesh-Free Methods, 2D or 3D Approach?
2022 (English)In: Journal of Manufacturing and Materials Processing, E-ISSN 2504-4494, Vol. 6, no 5, article id 120Article in journal (Refereed) Published
Abstract [en]

The objectives of this study are mainly two: (1) to validate whether a single grain scratch process can be modeled in two dimensions under the assumption of plane strain, and (2) to select the best discretization approach to model a single grain scratch process. This paper first focuses on the simulation of the orthogonal cutting process (aluminum alloy A2024 T351) using two mesh-based discretization approaches, the pure Lagrangian method (LAG) and the arbitrary Lagrangian-Eulerian method (ALE), and two particle-based approaches, the particle finite element method (PFEM) and smooth particle hydrodynamics (SPH), for both positive and negative rake angles. Benchmarking of the orthogonal cutting models at a rake angle of gamma = 20 degrees is performed with the results of the process forces (cutting and passive forces) of a turning experiment from the literature. It is shown that all models are able to predict the cutting forces, but not the passive force. The orthogonal cutting model is further extended to simulate the cutting mechanism with negative rake tool geometries typically found in grinding and single grit scratching processes. The effects of the negative rake angles on the discretization approaches are studied. The calculated process forces are also compared to the measurements of the single grit scratch process performed at our laboratory. The 2D orthogonal cutting models significantly overestimate the process forces. One of the reasons why the orthogonal 2D cutting model is inadequate is that it cannot describe the complex mechanisms of material removal such as rubbing, plowing, and cutting. To account for these phenomena in LAG, ALE, and SPH discretization approaches, a 3D scratch model is developed. When comparing the process forces of the 3D model with the experimental measurements, all three discretization approaches show good agreement. However, it can be seen that the ALE model most closely matches the process forces with the experimental results. Finally, the ALE 3D scratch model was subjected to sensitivity analysis by changing the cutting speed, the depth of cut and the tool geometry. The results clearly show that the ALE method not only predicts the process forces and form the trends observed in the scratching experiments, but also predicts the scratch topography satisfactorily. Hence, we conclude that a 3D model is necessary to describe a scratch process and that the ALE method is the best discretization method.

Place, publisher, year, edition, pages
MDPI, 2022
Keywords
finite element method, arbitrary Lagrangian-Eulerian, particle finite element method, smooth particle hydrodynamics, orthogonal cutting, oblique cutting, single grit scratch
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-94016 (URN)10.3390/jmmp6050120 (DOI)000872843900001 ()2-s2.0-85140634140 (Scopus ID)
Note

Validerad;2022;Nivå 2;2022-11-16 (hanlid);

Funder: German Research Foundation, DFG (252408385)

Available from: 2022-11-16 Created: 2022-11-16 Last updated: 2023-09-05Bibliographically approved
Larsson, S., Rodriguez Prieto, J. M., Gustafsson, G., Häggblad, H.-Å. & Jonsén, P. (2021). The particle finite element method for transient granular material flow: modelling and validation. Computational Particle Mechanics, 8(1), 135-155
Open this publication in new window or tab >>The particle finite element method for transient granular material flow: modelling and validation
Show others...
2021 (English)In: Computational Particle Mechanics, ISSN 2196-4378, Vol. 8, no 1, p. 135-155Article in journal (Refereed) Published
Abstract [en]

The prediction of transient granular material flow is of fundamental industrial importance. The potential of using numerical methods in system design for increasing the operating efficiency of industrial processes involving granular material flow is huge. In the present study, a numerical tool for modelling dense transient granular material flow is presented and validated against experiments. The granular materials are modelled as continuous materials using two different constitutive models. The choice of constitutive models is made with the aim to predict the mechanical behaviour of a granular material during the transition from stationary to flowing and back to stationary state. The particle finite element method (PFEM) is employed as a numerical tool to simulate the transient granular material flow. Use of the PFEM enables a robust treatment of large deformations and free surfaces. The fundamental problem of collapsing rectangular columns of granular material is studied experimentally employing a novel approach for in-plane velocity measurements by digital image correlation. The proposed numerical model is used to simulate the experimentally studied column collapses. The model prediction of the in-plane velocity field during the collapse agrees well with experiments.

Place, publisher, year, edition, pages
Springer, 2021
Keywords
Particle finite element method, Transient granular material flow, Constitutive modelling, Strain-rate-dependent strength, Digital image correlation
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-73197 (URN)10.1007/s40571-020-00317-6 (DOI)000515975800001 ()2-s2.0-85079217630 (Scopus ID)
Funder
EU, Horizon 2020, 636520
Note

Validerad;2021;Nivå 2;2021-01-22 (alebob);

Finansiär: KIC RawMaterials (17152)

Available from: 2019-03-14 Created: 2019-03-14 Last updated: 2023-09-05Bibliographically approved
Rodriguez Prieto, J. M., Carbonell, J. & Jonsén, P. (2020). Numerical Methods for the Modelling of Chip Formation. Archives of Computational Methods in Engineering, 27(2), 387-412
Open this publication in new window or tab >>Numerical Methods for the Modelling of Chip Formation
2020 (English)In: Archives of Computational Methods in Engineering, ISSN 1134-3060, E-ISSN 1886-1784, Vol. 27, no 2, p. 387-412Article in journal (Refereed) Published
Abstract [en]

The modeling of metal cutting has proved to be particularly complex due to the diversity of physical phenomena involved, including thermo-mechanical coupling, contact/friction and material failure. During the last few decades, there has been significant progress in the development of numerical methods for modeling machining operations. Furthermore, the most relevant techniques have been implemented in the relevant commercial codes creating tools for the engineers working in the design of processes and cutting devices. This paper presents a review on the numerical modeling methods and techniques used for the simulation of machining processes. The main purpose is to identify the strengths and weaknesses of each method and strategy developed up-to-now. Moreover the review covers the classical Finite Element Method covering mesh-less methods, particle-based methods and different possibilities of Eulerian and Lagrangian approaches.

Place, publisher, year, edition, pages
Springer, 2020
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-72672 (URN)10.1007/s11831-018-09313-9 (DOI)000519468600003 ()2-s2.0-85058942301 (Scopus ID)
Note

Validerad;2020;Nivå 2;2020-03-18 (alebob)

Available from: 2019-01-24 Created: 2019-01-24 Last updated: 2023-09-05Bibliographically approved
Holmberg, J., Rodríguez Prieto, J. M., Berglund, J., Sveboda, A. & Jonsén, P. (2018). Experimental and PFEM-simulations of residual stresses from turning tests of a cylindrical Ti-6Al-4V shaft. Paper presented at 4th CIRP Conference on Surface Integrity (CSI 2018), Tianjin, China, July 11-13 2018. Procedia CIRP, 71, 144-149
Open this publication in new window or tab >>Experimental and PFEM-simulations of residual stresses from turning tests of a cylindrical Ti-6Al-4V shaft
Show others...
2018 (English)In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 71, p. 144-149Article in journal (Refereed) Published
Abstract [en]

Alloy Ti-6Al-4V is a frequently used material in aero space applications due the high strength and low weight. This material is however often considered as a difficult to machine alloy due to several material properties such as the inherent characteristics of high hot hardness and strength which is causing an increased deformation of the cutting tool during machining. The thermal properties also cause a low thermal diffusion from locally high temperatures in the cutting zone that allows for reaction to the tool material resulting in increased tool wear.

Predicting the behavior of machining of this alloy is therefore essential when selecting machining tools or machining strategies. If the surface integrity is predicted, the influence of different machining parameters could be studied using Particle Finite Element (PFEM)-simulations. In this investigation the influence from cutting speed and feed during turning on the residual stresses has been measured using x-ray diffraction and compared to PFEM-simulations.

The results showed that cutting speed and feed have great impact on the residual stress state. The measured cutting force showed a strong correlation especially to the cutting feed. The microstructure, observed in SEM, showed highly deformed grains at the surface from the impact of the turning operation and the full width half maximum from the XDR measurements distinguish a clear impact from different cutting speed and feed which differed most for the higher feed rate.

The experimental measurements of the residual stresses and the PFEM simulations did however not correlate. The surface stresses as well as the sign of the residuals stresses differed which might be due to the material model used and the assumption of using a Coulomb friction model that might not represent the cutting conditions in the investigated case.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Ti-6Al-4V, X-ray diffraction, PFEM
National Category
Applied Mechanics Other Materials Engineering
Research subject
Solid Mechanics; Engineering Materials
Identifiers
urn:nbn:se:ltu:diva-69209 (URN)10.1016/j.procir.2018.05.087 (DOI)000550146400027 ()2-s2.0-85051265926 (Scopus ID)
Conference
4th CIRP Conference on Surface Integrity (CSI 2018), Tianjin, China, July 11-13 2018
Note

Konferensartikel i tidskrift;2018-06-08 (andbra);

Full text license: CC BY-NC-ND

Available from: 2018-06-08 Created: 2018-06-08 Last updated: 2023-11-10Bibliographically approved
Rodriguez Prieto, J. M., Carbonell, J. M., Cante, J., Oliver, J. & Jonsén, P. (2018). Generation of segmental chips in metal cutting modeled with the PFEM. Computational Mechanics, 61(6), 639-655
Open this publication in new window or tab >>Generation of segmental chips in metal cutting modeled with the PFEM
Show others...
2018 (English)In: Computational Mechanics, ISSN 0178-7675, E-ISSN 1432-0924, Vol. 61, no 6, p. 639-655Article in journal (Refereed) Published
Abstract [en]

The Particle Finite Element Method, a lagrangian finite element method based on a continuous Delaunay re-triangulation of the domain, is used to study machining of Ti6Al4V. In this work the method is revised and applied to study the influence of the cutting speed on the cutting force and the chip formation process. A parametric methodology for the detection and treatment of the rigid tool contact is presented. The adaptive insertion and removal of particles are developed and employed in order to sidestep the difficulties associated with mesh distortion, shear localization as well as for resolving the fine-scale features of the solution. The performance of PFEM is studied with a set of different two-dimensional orthogonal cutting tests. It is shown that, despite its Lagrangian nature, the proposed combined finite element-particle method is well suited for large deformation metal cutting problems with continuous chip and serrated chip formation.

Place, publisher, year, edition, pages
Springer, 2018
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-65476 (URN)10.1007/s00466-017-1442-z (DOI)000433223500001 ()31007328 (PubMedID)2-s2.0-85028742380 (Scopus ID)
Note

Validerad;2018;Nivå 2;2018-06-01 (rokbeg)

Available from: 2017-09-04 Created: 2017-09-04 Last updated: 2023-09-05Bibliographically approved
Rodriguez, J. M., Carbonell, J. M., Cante, J. & Oliver, J. (2017). Continuous chip formation in metal cutting processes using the Particle Finite Element Method (PFEM). International Journal of Solids and Structures, 120, 81-102
Open this publication in new window or tab >>Continuous chip formation in metal cutting processes using the Particle Finite Element Method (PFEM)
2017 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 120, p. 81-102Article in journal (Refereed) Published
Abstract [en]

This paper presents a study on the metal cutting simulation with a particular numerical technique, the Particle Finite Element Method (PFEM) with a new modified time integration algorithm and incorporating a contact algorithm capability . The goal is to reproduce the formation of continuous chip in orthogonal machining. The paper tells how metal cutting processes can be modelled with the PFEM and which new tools have been developed to provide the proper capabilities for a successful modelling. The developed method allows for the treatment of large deformations and heat conduction, workpiece-tool contact including friction effects as well as the full thermo-mechanical coupling for contact. The difficulties associated with the distortion of the mesh in areas with high deformation are solved introducing new improvements in the continuous Delaunay triangulation of the particles. The employment of adaptative insertion and removal of particles at every new updated configuration improves the mesh quality allowing for resolution of finer-scale features of the solution. The performance of the method is studied with a set of different two-dimensional tests of orthogonal machining. The examples consider, from the most simple case to the most complex case, different assumptions for the cutting conditions and different material properties. The results have been compared with experimental tests showing a good competitiveness of the PFEM in comparison with other available simulation tools.

Place, publisher, year, edition, pages
Elsevier, 2017
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
urn:nbn:se:ltu:diva-63135 (URN)10.1016/j.ijsolstr.2017.04.030 (DOI)000404199000006 ()2-s2.0-85018253718 (Scopus ID)
Note

Validerad;2017;Nivå 2;2017-06-15 (andbra)

Available from: 2017-04-24 Created: 2017-04-24 Last updated: 2023-09-05Bibliographically approved
Rodriguez, J. M., Jonsén, P. & Svoboda, A. (2017). Dislocation Density Based Material Model Applied in PFEM-simulation of Metal Cutting. Paper presented at 16th CIRP Conference on Modelling of Machining Operations (16th CIRP CMMO), Cluny, France, June 15-16, 2017. Procedia CIRP, 58, 193-197
Open this publication in new window or tab >>Dislocation Density Based Material Model Applied in PFEM-simulation of Metal Cutting
2017 (English)In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 58, p. 193-197Article in journal (Refereed) Published
Abstract [en]

Metal cutting is one of the most common metal-shaping processes. In this process, specified geometrical and surface properties are obtained through the break-up and removal of material by a cutting edge into a chip. The chip formation is associated with large strains, high strain rates and locally high temperatures due to adiabatic heating. These phenomena together with numerical complications make modeling of metal cutting challenging. Material models, which are crucial in metal-cutting simulations, are usually calibrated against data from material testing. Nevertheless, the magnitudes of strains and strain rates involved in metal cutting are several orders of magnitude 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 for different cutting speed and feed.

Place, publisher, year, edition, pages
Elsevier, 2017
National Category
Other Materials Engineering Applied Mechanics
Research subject
Solid Mechanics; Engineering Materials
Identifiers
urn:nbn:se:ltu:diva-63646 (URN)10.1016/j.procir.2017.03.338 (DOI)000404958500033 ()2-s2.0-85029766541 (Scopus ID)
Conference
16th CIRP Conference on Modelling of Machining Operations (16th CIRP CMMO), Cluny, France, June 15-16, 2017
Note

2017-06-01 (andbra);Konferensartikel i tidskrift

Available from: 2017-06-01 Created: 2017-06-01 Last updated: 2023-09-05Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-3865-1426

Search in DiVA

Show all publications