Phase change driven adaptive mesh refinement in PFEM

Bobach, Billy-Joe; Falla, Romain; Boman, Romain; Terrapon, Vincent; Ponthot, Jean‐Philippe

doi:10.25518/esaform21.3861

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Another advantage of PFEM stands in its ability to treat complex contact interaction, which explains the large number of PFEM works on the simulation of manufacturing processes, to name a few [45,46]. The use of PFEM to model challenging additive manufacturing (AM) processes involving a fluid-to-solid phase transition was also explored in [47]. All these aspects make PFEM a promising candidate for the simulation of 3DCP.…”

Section: Particle Finite Element Methodsmentioning

confidence: 99%

Numerical simulation of the extrusion and layer deposition processes in 3D concrete printing with the Particle Finite Element Method

Rizzieri,

Ferrara,

Cremonesi

2023

Comput Mech

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Abstract3D Concrete Printing (3DCP) is a rapidly evolving technology that allows for the efficient and accurate construction of complex concrete objects. In this paper, a numerical modelling approach is presented for the simulation of the printing process of cementitious materials, based on the homogeneous fluid assumption. To cope with the large deformations of the domain and the nonlinearity resulting from the use of a non-Newtonian rheological law, the Navier–Stokes equations are solved in the framework of the Particle Finite Element Method (PFEM). Furthermore, tailored solutions have been formulated and implemented for the time-dependent moving boundary conditions at the nozzle outlet and for the efficient handling of the inter-layer contact in the same PFEM framework. The overall computational cost is decreased by the implementation of an adaptive de-refinement technique, which drastically reduces the number of degrees of freedom in time. The proposed modelling approach is finally validated by simulating the printing process of six rectilinear layers and one multi-layer “wall”. The results show good agreement with the experimental data and provide valuable insights into the printing process, paving the way for the use of numerical modelling tools for the optimization of materials and processes in the field of 3D Concrete Printing.

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Section: Particle Finite Element Methodsmentioning

confidence: 99%

Numerical simulation of the extrusion and layer deposition processes in 3D concrete printing with the Particle Finite Element Method

Rizzieri,

Ferrara,

Cremonesi

2023

Comput Mech

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Simulation of the Marangoni Effect and Phase Change Using the Particle Finite Element Method

et al. 2021

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A simulation method is developed herein based on the particle finite element method (PFEM) to simulate processes with surface tension and phase change. These effects are important in the simulation of industrial applications, such as welding and additive manufacturing, where concentrated heat sources melt a portion of the material in a localized fashion. The aim of the study is to use this method to simulate such processes at the meso-scale and thereby gain a better understanding of the physics involved. The advantage of PFEM lies in its Lagrangian description, allowing for automatic tracking of interfaces and free boundaries, as well as its robustness and flexibility in dealing with multiphysics problems. A series of test cases is presented to validate the simulation method for these two effects in combination with temperature-driven convective flows in 2D. The PFEM-based method is shown to handle both purely convective flows and those with the Marangoni effect or melting well. Following exhaustive validation using solutions reported in the literature, the obtained results show that an overall satisfactory simulation of the complex physics is achieved. Further steps to improve the results and move towards the simulation of actual welding and additive manufacturing examples are pointed out.

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Review of Particle-Based Computational Methods and Their Application in the Computational Modelling of Welding, Casting and Additive Manufacturing

Tong

2023

Metals

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A variety of particle-based methods have been developed for the purpose of computationally modelling processes that involve, for example, complex topological changes of interfaces, significant plastic deformation of materials, fluid flow in conjunction with heat transfer and phase transformation, flow in porous media, granular flow, etc. Being different from the conventional methods that directly solve related governing equations using a computational grid, the particle-based methods firstly discretize the continuous medium into discrete pseudo-particles in mathematics. The methods then mathematically solve the governing equations by considering the local interaction between neighbouring pseudo-particles. Such solutions can reflect the overall flow, deformation, heat transfer and phase transformation processes of the target materials at the mesoscale and macroscale. This paper reviews the fundamental concepts of four different particle-based methods (lattice Boltzmann method—LBM, smoothed particle hydrodynamics—SPH, discrete element method—DEM and particle finite element method—PFEM) and their application in computational modelling research on welding, casting and additive manufacturing.

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Phase change driven adaptive mesh refinement in PFEM

Cited by 3 publications

References 10 publications

Numerical simulation of the extrusion and layer deposition processes in 3D concrete printing with the Particle Finite Element Method

Numerical simulation of the extrusion and layer deposition processes in 3D concrete printing with the Particle Finite Element Method

Simulation of the Marangoni Effect and Phase Change Using the Particle Finite Element Method

Review of Particle-Based Computational Methods and Their Application in the Computational Modelling of Welding, Casting and Additive Manufacturing

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