Comparison of 3DSIM thermal modelling of selective laser melting using new dynamic meshing method to ANSYS

Zeng, Kai; Pal, Devendra; Gong, Haijun; Patil, Nachiket; Stucker, Brent

doi:10.1179/1743284714y.0000000703

Cited by 102 publications

(43 citation statements)

References 26 publications

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“…With the development of information technology, when solving knowledge-intensive problems, scientists and technologists are increasingly using software [2][3][4]. To use existing software products, it is necessary to introduce a lot of initial data for which additional research or a lot of time to search for them is required [5][6][7][8].…”

Section: Some Aspects Of the Construction Of A Mathematical Model Formentioning

confidence: 99%

Some Aspects of the Construction of a Mathematical Model for Cutting Metals

Turganbekovich¹,

Davlatbekkyzy,²,

Akhmedov³

et al. 2019

SERIES OF GEOLOGY AND TECHNICAL SCIENCES

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Section: Some Aspects Of the Construction Of A Mathematical Model Formentioning

confidence: 99%

Some Aspects of the Construction of a Mathematical Model for Cutting Metals

Turganbekovich¹,

Davlatbekkyzy,²,

Akhmedov³

et al. 2019

SERIES OF GEOLOGY AND TECHNICAL SCIENCES

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“…5,6 The desired object is manufactured by selective melting and consolidation of the deposited material layers with a scanning laser beam, based on a novel line by line and layer by layer material incremental manufacturing philosophy. 7 Selective laser melting has afforded new opportunities for producing PRMMCs with the tailored structure.…”

Section: List Of Symbolsmentioning

confidence: 99%

Tailored reinforcement/matrix interface and thermodynamic mechanism during selective laser melting composites

Dai

2016

Materials Science and Technology

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The simulation of thermodynamic behaviours of reinforcing particles and reinforcement/matrix interface during selective laser melting of particle reinforced metal matrix composites was presented. The transition from powder to solid phase, the surface tension and the density change were taken into account. It showed that the operating temperature and the resultant turbulent intensity increased with increasing the applied linear energy density, giving rise to the high instability of the molten pool. The gravity and capillary forces play a crucial role in the rearrangement and the attendant distribution state of the reinforcing particles. The particle morphology and distribution state in the as processed parts were experimentally studied, which were in good agreement with the results predicted by simulation. List of symbolsA laser absorptivity of the powder B view factor C p specific heat at constant pressure/J kg 21 K 21 D p average diameter of the powder particles/m F body force, e.g. gravity and buoyancy forces/ N h species enthalpy h c convective heat transfer coefficient/ W m 22 K 21 h ref reference enthalpy H enthalpy of the material DH latent heat of the phase change k sur temperature coefficient of surface tension M s mass source/kg p pressure/N m 22 P laser power/W S H source item of the energy conservation equation t time/s T temperature/K T ' ambient temperature/K T p temperature of the powder particles/K T ref reference temperature/K V ! velocity vector/m s 21u,v,w velocity magnitude/m s 21 x,y,z coordinates/m a volume fraction of the gas phase a i volume fraction of each phase a p fraction of particles b thermal expansion coefficient c surface tension/kg m 21 e radiation emissivity k thermal conductivity of the powder bed/ W m 21 K 21 k s thermal conductivity of the solid/ W m 21 K 21 k eff effective thermal conductivity of liquidsolid-gas multiphases/W m 21 K 21 k f thermal conductivity of the fluid/ W m 21 K 21 k r thermal conductivity due to the radiation among particles/W m 21 K 21 m dynamic viscosity/Pa s r coupled density/kg m 23 r l base metal density/kg m 23 r T base metal density at temperature T/kg m 23 r p particle density/kg/m 3 s e Stefan-Boltzmann constant v radius of the Gaussian laser beam/m

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“…Moreover, the industries are so interested in the new manufacturing possibilities offered by the SLM, so that numerical simulations were no more confined to academic research but became a powerful tool for the companies willing to develop new commercial products. As a result, specific software has launched onto the marketplace, for example, 3DSIM (based on dynamic adaptive mesh refinement [24]), SIMUFACT (based on the inherent strain theory [25,26]), and NETFABB.…”

Section: Finite Element Methods -Simulation Numerical Analysis and Somentioning

confidence: 99%

Finite Element Thermal Analysis of Metal Parts Additively Manufactured via Selective Laser Melting

Pitassi¹,

Savoia²,

Fontanari³

et al. 2018

Finite Element Method - Simulation, Numerical Analysis and Solution Techniques

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In this chapter, a three-dimensional finite element model is developed to simulate the thermal behavior of the molten pool in selective laser melting (SLM) process. Laser-based additive manufacturing (AM) is a near net shape manufacturing process able to produce 3D objects. They are layer-wise built through selective melting of a metal powder bed. The necessary energy is provided by a laser source. The interaction between laser and material occurs within a few microseconds, hence the transient thermal behavior must be taken into account. A calibration procedure is carried out to fit the numerical solution with the experimental data. Once the calibration has corrected the thermal parameters, a dynamic mesh refinement is applied to reduce the computational cost. The scanning strategy adopted by the laser is simulated by a path simulator built using MatLab ® , while numerical analysis is carried out using ANSYS ® , a commercial finite element software. To improve the performance of the simulation, the two codes interact each other to solve the analysis. Temperature distribution and geometrical feature of the molten pool under different process conditions are investigated. Results from the FE analysis provide guidance for setting up the optimization of process parameters and develop a base for further residual stress analysis.

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Comparison of 3DSIM thermal modelling of selective laser melting using new dynamic meshing method to ANSYS

Cited by 102 publications

References 26 publications

Some Aspects of the Construction of a Mathematical Model for Cutting Metals

Some Aspects of the Construction of a Mathematical Model for Cutting Metals

Tailored reinforcement/matrix interface and thermodynamic mechanism during selective laser melting composites

Finite Element Thermal Analysis of Metal Parts Additively Manufactured via Selective Laser Melting

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