Multiphysical Simulation of Laser Material Processing

Otto, Andreas; Koch, Holger; Vázquez, Rodrigo Gómez

doi:10.1016/j.phpro.2012.10.109

Cited by 65 publications

(40 citation statements)

References 8 publications

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“…(1) is a standard problem of numerical simulation for derivation of the temperature field. In this work, finite element simulation of the phase change problem was carried out using the enthalpy [27] of the material in different temperatures. The enthalpy values of titanium are given in Table 1.…”

Section: Initial and Boundary Conditionsmentioning

confidence: 99%

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Ren

Jiang

Liú

et al. 2014

Int J Adv Manuf Technol

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This paper reports theoretical and experimental results of drilling titanium sheets with a thickness of 0.2 mm using a nanosecond-pulsed laser. To describe morphological changes and the temperature distribution during nanosecond laser drilling, a physical model was established using ANSYS parametric design language (APDL) with life and death technology of ANSYS software. The influences of laser parameters such as laser energy and pulse number on the dimensions (depth and diameter) of the drilled holes were investigated with optical microscope. The crater depth and diameter could be increased by increasing the number of laser pulses and laser energy with some defects. Compared with experimental results, numerical results show slight difference, which is in the acceptable range.

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Section: Initial and Boundary Conditionsmentioning

confidence: 99%

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Ren

Jiang

Liú

et al. 2014

Int J Adv Manuf Technol

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“…The principle of this technique is quite simple and highly used (almost all references [11][12][13]36,49,52] or [53]). Only the geometrical aspect of the beam is taken.…”

Section: Ray Tracingmentioning

confidence: 99%

[INVITED] An overview of the state of art in laser welding simulation

Dal

Fabbro

2016

Optics & Laser Technology

147

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“…Several simulation approaches for laser material processing consider fluid-dynamic effects occurring in the heat affected zone [12][13][14]. In this sense, electron beam melting and laser beam melting are specifically investigated in [15][16][17].…”

Section: Microscale Simulationmentioning

confidence: 99%

Investigations on Temperature Fields during Laser Beam Melting by Means of Process Monitoring and Multiscale Process Modelling

Schilp

Seidel

Krauss

et al. 2014

Advances in Mechanical Engineering

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Process monitoring and modelling can contribute to fostering the industrial relevance of additive manufacturing. Process related temperature gradients and thermal inhomogeneities cause residual stresses, and distortions and influence the microstructure. Variations in wall thickness can cause heat accumulations. These occur predominantly in filigree part areas and can be detected by utilizing off-axis thermographic monitoring during the manufacturing process. In addition, numerical simulation models on the scale of whole parts can enable an analysis of temperature fields upstream to the build process. In a microscale domain, modelling of several exposed single hatches allows temperature investigations at a high spatial and temporal resolution. Within this paper, FEMbased micro-and macroscale modelling approaches as well as an experimental setup for thermographic monitoring are introduced. By discussing and comparing experimental data with simulation results in terms of temperature distributions both the potential of numerical approaches and the complexity of determining suitable computation time efficient process models are demonstrated. This paper contributes to the vision of adjusting the transient temperature field during manufacturing in order to improve the resulting part's quality by simulation based process design upstream to the build process and the inline process monitoring.

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Multiphysical Simulation of Laser Material Processing

Cited by 65 publications

References 8 publications

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

[INVITED] An overview of the state of art in laser welding simulation

Investigations on Temperature Fields during Laser Beam Melting by Means of Process Monitoring and Multiscale Process Modelling

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