Numerical Simulation and Experimental Validation of Sheet Laser Forming Processes Using General Scanning Paths

Navarrete, Álvaro; Cook, F.B.; Celentano, Diego J.; Cruchaga, Marcela; García‐Herrera, Claudio

doi:10.3390/ma11071262

Cited by 6 publications

(7 citation statements)

References 31 publications

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“…The bending angles found in this work (see Figure 2) agree with experimental and simulations results found in the literature for AISI 304 [3,12,17,21] when comparing treatments with similar linear energy. To the best of our knowledge, no work has reported bending angle values for IF steel sheets, whereas few experimental results have been published for AA 6013 aluminum [18], which agree with our values.…”

Section: Discussionsupporting

confidence: 90%

“…Laser beam forming (LBF) is a contactless process for sheet bending of ductile metals, in which a laser beam heats specific zones of a material, generating thermal stresses that exceed its yield strength and inducing plastic deformation that finally bends the metallic sheet [1]. Recently, research carried out on LBF for bending has mainly focused on the thermomechanical effects of operating variables, such as the laser beam diameter, power and velocity, surface coating, and sheet dimensions [2][3][4][5][6]. In parallel, other authors have developed scanning strategies to manufacture parts of complex geometries, such as single and multi-run sequences and linear and curved laser paths [3,[7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, research carried out on LBF for bending has mainly focused on the thermomechanical effects of operating variables, such as the laser beam diameter, power and velocity, surface coating, and sheet dimensions [2][3][4][5][6]. In parallel, other authors have developed scanning strategies to manufacture parts of complex geometries, such as single and multi-run sequences and linear and curved laser paths [3,[7][8][9][10][11][12]. Thus, this kind of forming method has recently become a viable and widespread process to be applied in shaping different metallic components, especially due to the sophistication of laser techniques and their wide availability in various industries.…”

Section: Introductionmentioning

confidence: 99%

“…A wide range of metallic materials have been treated via LBF for bending and welding purposes, e.g., AISI 1010 [5,7,[13][14][15] and S275 [8] mild steels, AISI 302 [11,16] and AISI 304 [4,6,11,12,17] stainless steels, AA 6013 aluminum alloy under both annealed and as-welded conditions [18,19], AA 2024-T3 aluminum alloy, and Ti6Al4V titanium alloy [3]. In addition, the influence of material properties on the LBF process has been addressed via numerical simulations in terms of the relationship between the final bending angle and material parameters, such as the Young's modulus, yield strength, thermal expansion coefficient, specific heat, and thermal conductivity [20].…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Simulation Analysis of Effects of Laser Bending on Microstructures Applied to Advanced Metallic Alloys

Ramos-Moore

Hoffmann

Siqueira³

et al. 2021

Metals

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The aim of this work is the analysis of laser beam forming (LBF) in the bending of two relevant materials used in the transportation industry—interstitial-free (IF) steel and AA6013 high-strength aluminum alloy. Our experiments and numerical simulations consider two different operating scenarios achieved by varying the laser beam scanning velocity using linear paths. The material behavior during this process is described via a coupled thermomechanical-plasticity-based formulation that allows prediction of temperature profiles and bending angles. Metallography, glow discharge optical emission spectroscopy, and X-ray diffraction are used for microstructure characterization. In addition, microstress analyses are performed in order to study the stress behavior of the irradiated zones. It is found that LBF mainly induces grain growth and melting in the case of high surface temperatures. Before melting, the materials developed compressive stresses that could be useful in preventing cracking failures. The resulting bending angles are predicted and experimentally validated, indicating the robustness of the model to estimate LBF effects on advanced alloys. The present analysis relating bending angles together with temperature and microstructure profiles along the thickness of the sheets is the main original contribution of this work, highlighting the need for further modeling refinement of the effects of LBF on advanced alloys to include more microstructural properties, such as grain boundary diffusion and surface roughness.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and Simulation Analysis of Effects of Laser Bending on Microstructures Applied to Advanced Metallic Alloys

Ramos-Moore

Hoffmann

Siqueira³

et al. 2021

Metals

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“…ere are many different methods for investigating material performance. Methods include the use of sensors to detect damage and monitor structural health (i.e., structural health monitoring) [14][15][16][17][18], numerical simulations [19][20][21][22][23][24], and experiments combined with numerical simulations [25][26][27][28][29][30][31]. For the study of the mechanical properties of the inflatable anchor in this paper, the field test method was mainly used.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Studies on the Inflatable Recyclable Anchor in the Tube Piece Type Based on the Soil‐Anchor Interaction Mechanism

Xiao

et al. 2021

Advances in Civil Engineering

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This paper deeply studies the characteristics and “uplift bearing capacity” of a novel type of inflatable recyclable anchor in the tube piece. The proposed novel inflatable recyclable anchor in the tube piece type comprises a metallic rod, an inflatable anchorage device, and a recovery device. Fifteen field uplift tests are conducted to investigate the effects of inflation pressure, thickness of the steel disc, embedment length, and time lapse between anchor inflation and pullout on “the uplift bearing capacity.” The results show that “the uplift bearing capacity” of the novel inflatable anchor in the tube piece type increases with the increase of inflation pressure, thickness of the steel disc, and embedment length. With the increase of inflation time, “the uplift bearing capacity” of the novel inflatable anchor experiences an increase after first experiencing a decrease. The finite element analysis method is used to establish a numerical analysis model of the inflatable anchor, and the distribution law of the tensile stress of the surrounding soil during the pullout of the anchor is analysed. Compared with the traditional grouted anchor, the proposed anchor has an obvious superiority in recyclability, reusability, and swifter formation of anchorage force and thus is a resource-saving and environmentally friendly anchor technology.

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An optimized irradiation strategy and layout configuration in laser forming of copper/aluminum bi-metal sheets with a functional thickness

Ghoreishi

Mahmoodi

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Laser forming process is a type of thermo-mechanical forming process in which a laser beam irradiation on a specific scan path is used to create a bending angle in a sheet. In this work, the forming behavior of copper/aluminum bi-metal sheets with a functional thickness is investigated using the laser forming process. For that, numerical simulations are performed with an implementation of DFLUX subroutine to have more realistic process circumstances. The process parameters were defined as follows: laser beam radius of 2 mm and scan velocity of 1000 mm/min with three different laser power to activate the temperature gradient mechanism. A detailed discussion has been done on an optimized selection of bi-metal sheet layout (i.e. the selection of the material from copper and aluminum as the top layer to increase the formability of the sheet under the same process conditions). Furthermore, the laser forming process of bi-metal sheets with a functional thickness as well as single-layered uniform sheets have been studied and the differences between these two are specified. An irradiation strategy was also presented to eliminate/reduce edge effects on bi-metal sheets. Hence, by adding an auxiliary laser path perpendicular to the main scan path, the uniformity of the final product would be improved. Numerical simulations were fully validated with the corresponding experimental tests. Finally, aluminum was determined as the ideal option to choose as a top layer due to having a higher thermal expansion coefficient and lower thermal conductivity.

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Numerical Simulation and Experimental Validation of Sheet Laser Forming Processes Using General Scanning Paths

Cited by 6 publications

References 31 publications

Experimental and Simulation Analysis of Effects of Laser Bending on Microstructures Applied to Advanced Metallic Alloys

Experimental and Simulation Analysis of Effects of Laser Bending on Microstructures Applied to Advanced Metallic Alloys

Experimental and Numerical Studies on the Inflatable Recyclable Anchor in the Tube Piece Type Based on the Soil‐Anchor Interaction Mechanism

An optimized irradiation strategy and layout configuration in laser forming of copper/aluminum bi-metal sheets with a functional thickness

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