PSI - Issue 56

ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Procedia Structural Integrity 56 (2024) 33–40

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2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 organizers 10.1016/j.prostr.2024.02.034 * Corresponding author. E-mail address: hanane.yaagoubi@um5s.net.ma 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 chairpersons 1. Introduction An additive manufacturing process called Selective Laser Sintering (SLS) uses a laser to selectively fuse layers of polyamide 12 powder to quickly produce plastic parts directly from a CAD model Amado A.all (2016), Dong, L.all (2007),(2009), Elham.all (2020), Li J (2020), Nevertheless, a melting of the powder layer or thermal stresses caused by large temperature gradients during part construction can lead to residual stresses and defects in SLS parts, Ganci M. all (2017), Nelson, J.all (1993), Xiaoyong (2018), Paolucci F, (2020), Mechanical models of SLS process are rarely found in the literature Roberto.all (2021), To ensure the quality of part production and to enable the use of new materials and designs, without resorting to experimental needs, an accurate thermo-mechanical model of the SLS process is required. In this article, mechanical analysis of the polyamide 12 layer during the laser sintering is carried out using the COMSOL Multiphysics software. a transient three-dimensional finite element thermo-mechanical model is created, in this paper, the results of the mechanical analyses of the polyamide layer sintered by CO 2 laser will be * Corresponding author. E-mail address: hanane.yaagoubi@um5s.net.ma 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 chairpersons Abstract The selective laser sintering process is considered to be a new process among the most innovative techniques in the field of additive manufacturing, to facilitate the development and the technical improvement of this process, Thermo mechanical investigation is necessary to control the SLS process, in this paper a thermo-mechanical simulation of selective laser sintering of polyamide 12 will be presented., this thermo-mechanical simulation was made under the COMSOL Multiphysics software, using Hook's law with the equilibrium and accounting equations for the calculation of the residual stresses appearing in the sintered layer of polyamide 12, this simulation was made for the prevention of deformations appeared in the final printed parts. The calculation of von Mises stress and the calculation of the magnitude of displacement within a sintered layer of polyamide 12 was done, with the analysis of the volumetric strain and the calculation of the volume: stress tensors, principal strain directions. Keywords: Thermo-mechanical simulation, Polyamide12, Non linear Mechanical Model, Selective Laser Sintering, Stress, strains. 1. Introduction An additive manufacturing process called Selective Laser Sintering (SLS) uses a laser to selectively fuse layers of polyamide 12 powder to quickly produce plastic parts directly from a CAD model Amado A.all (2016), Dong, L.all (2007),(2009), Elham.all (2020), Li J (2020), Nevertheless, a melting of the powder layer or thermal stresses caused by large temperature gradients during part construction can lead to residual stresses and defects in SLS parts, Ganci M. all (2017), Nelson, J.all (1993), Xiaoyong (2018), Paolucci F, (2020), Mechanical models of SLS process are rarely found in the literature Roberto.all (2021), To ensure the quality of part production and to enable the use of new materials and designs, without resorting to experimental needs, an accurate thermo-mechanical model of the SLS process is required. In this article, mechanical analysis of the polyamide 12 layer during the laser sintering is carried out using the COMSOL Multiphysics software. a transient three-dimensional finite element thermo-mechanical model is created, in this paper, the results of the mechanical analyses of the polyamide layer sintered by CO 2 laser will be * Corresponding author. E-mail address: hanane.yaagoubi@um5s.net.ma 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 chairpersons Abstract The selective laser sintering process is considered to be a new process among the most innovative techniques in the field of additive manufacturing, to facilitate the development and the technical improvement of this process, Thermo mechanical investigation is necessary to control the SLS process, in this paper a thermo-mechanical simulation of selective laser sintering of polyamide 12 will be presented., this thermo-mechanical simulation was made under the COMSOL Multiphysics software, using Hook's law with the equilibrium and accounting equations for the calculation of the residual stresses appearing in the sintered layer of polyamide 12, this simulation was made for the prevention of deformations appeared in the final printed parts. The calculation of von Mises stress and the calculation of the magnitude of displacement within a sintered layer of polyamide 12 was done, with the analysis of the volumetric strain and the calculation of the volume: stress tensors, principal strain directions. Keywords: Thermo-mechanical simulation, Polyamide12, Non linear Mechanical Model, Selective Laser Sintering, Stress, strains. 1. Introduction An additive manufacturing process called Selective Laser Sintering (SLS) uses a laser to selectively fuse layers of polyamide 12 powder to quickly produce plastic parts directly from a CAD model Amado A.all (2016), Dong, L.all (2007),(2009), Elham.all (2020), Li J (2020), Nevertheless, a melting of the powder layer or thermal stresses caused by large temperature gradients during part construction can lead to residual stresses and defects in SLS parts, Ganci M. all (2017), Nelson, J.all (1993), Xiaoyong (2018), Paolucci F, (2020), Mechanical models of SLS process are rarely found in the literature Roberto.all (2021), To ensure the quality of part production and to enable the use of new materials and designs, without resorting to experimental needs, an accurate thermo-mechanical model of the SLS process is required. In this article, mechanical analysis of the polyamide 12 layer during the laser sintering is carried out using the COMSOL Multiphysics software. a transient three-dimensional finite element thermo-mechanical model is created, in this paper, the results of the mechanical analyses of the polyamide layer sintered by CO 2 laser will be * Corresponding author. E-mail address: hanane.yaagoubi@um5s.net.ma 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 chairpersons Abstract The selective laser sintering process is considered to be a new process among the most innovative techniques in the field of additive manufacturing, to facilitate the development and the technical improvement of this process, Thermo mechanical investigation is necessary to control the SLS process, in this paper a thermo-mechanical simulation of selective laser sintering of polyamide 12 will be presented., this thermo-mechanical simulation was made under the COMSOL Multiphysics software, using Hook's law with the equilibrium and accounting equations for the calculation of the residual stresses appearing in the sintered layer of polyamide 12, this simulation was made for the prevention of deformations appeared in the final printed parts. The calculation of von Mises stress and the calculation of the magnitude of displacement within a sintered layer of polyamide 12 was done, with the analysis of the volumetric strain and the calculation of the volume: stress tensors, principal strain directions. Keywords: Thermo-mechanical simulation, Polyamide12, Non linear Mechanical Model, Selective Laser Sintering, Stress, strains. 1. Introduction An additive manufacturing process called Selective Laser Sintering (SLS) uses a laser to selectively fuse layers of polyamide 12 powder to quickly produce plastic parts directly from a CAD model Amado A.all (2016), Dong, L.all (2007),(2009), Elham.all (2020), Li J (2020), Nevertheless, a melting of the powder layer or thermal stresses caused by large temperature gradients during part construction can lead to residual stresses and defects in SLS parts, Ganci M. all (2017), Nelson, J.all (1993), Xiaoyong (2018), Paolucci F, (2020), Mechanical models of SLS process are rarely found in the literature Roberto.all (2021), To ensure the quality of part production and to enable the use of new materials and designs, without resorting to experimental needs, an accurate thermo-mechanical model of the SLS process is required. In this article, mechanical analysis of the polyamide 12 layer during the laser sintering is carried out using the COMSOL Multiphysics software. a transient three-dimensional finite element thermo-mechanical model is created, in this paper, the results of the mechanical analyses of the polyamide layer sintered by CO 2 laser will be * Corresponding author. E-mail address: hanane.yaagoubi@um5s.net.ma 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 chairpersons Abstract The selective laser sintering process is considered to be a new process among the most innovative techniques in the field of additive manufacturing, to facilitate the development and the technical improvement of this process, Thermo mechanical investigation is necessary to control the SLS process, in this paper a thermo-mechanical simulation of selective laser sintering of polyamide 12 will be presented., this thermo-mechanical simulation was made under the COMSOL Multiphysics software, using Hook's law with the equilibrium and accounting equations for the calculation of the residual stresses appearing in the sintered layer of polyamide 12, this simulation was made for the prevention of deformations appeared in the final printed parts. The calculation of von Mises stress and the calculation of the magnitude of displacement within a sintered layer of polyamide 12 was done, with the analysis of the volumetric strain and the calculation of the volume: stress tensors, principal strain directions. Keywords: Thermo-mechanical simulation, Polyamide12, Non linear Mechanical Model, Selective Laser Sintering, Stress, strains. 1. Introduction An additive manufacturing process called Selective Laser Sintering (SLS) uses a laser to selectively fuse layers of polyamide 12 powder to quickly produce plastic parts directly from a CAD model Amado A.all (2016), Dong, L.all (2007),(2009), Elham.all (2020), Li J (2020), Nevertheless, a melting of the powder layer or thermal stresses caused by large temperature gradients during part construction can lead to residual stresses and defects in SLS parts, Ganci M. all (2017), Nelson, J.all (1993), Xiaoyong (2018), Paolucci F, (2020), Mechanical models of SLS process are rarely found in the literature Roberto.all (2021), To ensure the quality of part production and to enable the use of new materials and designs, without resorting to experimental needs, an accurate thermo-mechanical model of the SLS process is required. In this article, mechanical analysis of the polyamide 12 layer during the laser sintering is carried out using the COMSOL Multiphysics software. a transient three-dimensional finite element thermo-mechanical model is created, in this paper, the results of the mechanical analyses of the polyamide layer sintered by CO 2 laser will be © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the SIRAMM23 organizers Abstract The selective laser sintering process is considered to be a new process among the most innovative techniques in the field of additive manufacturing, to facilitate the development and the technical improvement of this process, Thermo mechanical investigation is necessary to control the SLS process, in this paper a thermo-mechanical simulation of selective laser sintering of polyamide 12 will be presented., this thermo-mechanical simulation was made under the COMSOL Multiphysics software, using Hook's law with the equilibrium and accounting equations for the calculation of the residual stresses appearing in the sintered layer of polyamide 12, this simulation was made for the prevention of deformations appeared in the final printed parts. The calculation of von Mises stress and the calculation of the magnitude of displacement within a sintered layer of polyamide 12 was done, with the analysis of the volumetric strain and the calculation of the volume: stress tensors, principal strain directions. Keywords: Thermo-mechanical simulation, Polyamide12, Non linear Mechanical Model, Selective Laser Sintering, Stress, strains. Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) Thermo-Mechanical Simulation of the Powder Bed of Polyamide 12 during the Selective Laser Sintering Process Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) Thermo-Mechanical Simulation of the Powder Bed of Polyamide 12 during the Selective Laser Sintering Process Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) Thermo-Mechanical Simulation of the Powder Bed of Polyamide 12 during the Selective Laser Sintering Process Hanane YAAGOUBI 1* , Hamid ABOUCHADI 1 , Mourad TAHA JANAN 1 1 Laboratory of Applied Mechanics and Technologies (LAMAT), ENSAM, ST2I Research Center Mohammed V University, Rabat, Morocco Structural Integrity and Reliability of Advanced Materials obtained through Additive Manufacturing (SIRAMM23) Thermo-Mechanical Simulation of the Powder Bed of Polyamide 12 during the Selective Laser Sintering Process Hanane YAAGOUBI 1* , Hamid ABOUCHADI 1 , Mourad TAHA JANAN 1 1 Laboratory of Applied Mechanics and Technologies (LAMAT), ENSAM, ST2I Research Center Mohammed V University, Rabat, Morocco Structural Integrity and Reliability of Advanced Materials obtained through Additive 1* , Hamid ABOUCHADI 1 , Mourad TAHA JANAN 1 1 Laboratory of Applied Mechanics and Technologies (LAMAT), ENSAM, ST2I Research Center Mohammed V University, Rabat, Morocco Hanane YAAGOUBI 1* , Hamid ABOUCHADI 1 , Mourad TAHA JANAN 1 Hanane YAAGOUBI 1* , Hamid ABOUCHADI 1 , Mourad TAHA JANAN 1 1 Laboratory of Applied Mechanics and Technologies (LAMAT), ENSAM, ST2I Research Center Mohammed V University, Rabat, Morocco 1 Laboratory of Applied Mechanics and Technologies (LAMAT), ENSAM, ST2I Research Center Mohammed V University, Rabat, Morocco