Numerical investigation on the laser bending of stainless steel foil with pre-stresses

Liu, Jie; Sun, Sheng; Guan, Yanjin

doi:10.1016/j.jmatprotec.2008.04.006

Cited by 35 publications

(11 citation statements)

References 10 publications

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“…In 2009, Liu et al [4] also studied its forming mechanism. They presented that thermal stress which turns up during forming is another factor which affects forming.…”

Section: Theoretical Researchesmentioning

confidence: 99%

Laser bending process of preloaded sheet metal

Wan

et al. 2015

MATEC Web of Conferences

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Abstract. Laser bending process of preloaded sheet metal was reviewed on theoretical researches, forming experiments, numerical simulations and material performance studies of formed sheets. Considering the pre-bending platforms that used in the forming experiments can only work on few simple pre-bending types and small sized sheet metals, a large and flexible pre-bending platform was developed by authors. Experiments were done on this platform. The results of experiments showed that different prebending types lead to bending sheet metals into different curved shapes and large sized structure components of flight vehicles can be formed using this process. Based on the current research status, further developments and challenges of this process are discussed.

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“…In 2009, Liu et al [4] also studied its forming mechanism. They presented that thermal stress which turns up during forming is another factor which affects forming.…”

Section: Theoretical Researchesmentioning

confidence: 99%

Laser bending process of preloaded sheet metal

Wan

et al. 2015

MATEC Web of Conferences

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“…There was seldom work concerning laser bending with preload. The laser bending process with the auxiliary load was simulated on ship-plate material D36 and stainless steel, and their deformations were predicted [7,8]. Laser bending with preload of the complex structure with an aluminum alloy plate was researched in which influencing factors and material properties changes during the bending process were analysed [9].…”

Section: Introductionmentioning

confidence: 99%

Study of laser bending of a preloaded Titanium alloy sheet

Wang

et al. 2014

Manufacturing Rev.

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Laser bending of sheet metals with preload offers some attractive characteristics/merits, comparing to laser free bending without prestressing on the metals. The study reported in this paper was focused on a Titanium alloy which finds widespread applications in aerospace manufacturing. FE simulation of laser bending with prestressing on the Titanium alloy sheet was conducted for the analysis of the bending process and experiment carried out to verify the model and the result. It was shown that the simulation result is close to that measured in the experiment. Based on the computed result, the load-displacement curve was analysed and transmission efficiency of the elastic energy defined to evaluate the bending effect. These enhanced understanding of the mechanism of laser bending with a preload. A method for the optimization on technological parameters was further proposed. Referring to the deformation targeted, the preload value was determined through the FE simulation. The result showed that, on the premise that the specimen surface can be prevented from damaging, transmission efficiency of the elastic energy could reach to the maximum value through adjusting technological parameters of the laser system and deformation accuracy of the specimen could also be improved through this approach. The work presented in this paper may find its application in the manufacture of Titanium alloy sheets with a more cost-effective and a more precise way.

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“…Labeas (2008) developed a local three-dimensional finite element model for simulation of the laser forming process of aluminium parts. Laser bending of stainless steel foil was examined numerically by Liu et al (2009). They showed that bending angles of stainless foils increased with pre-loading.…”

Section: Introductionmentioning

confidence: 99%

Bend angle prediction and parameter optimisation for laser bending of stainless steel using FEM and RSM

Venkadeshwaran

Das

Misra

2012

IJMMS

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Finite element simulation (FEM) and response surface methodology (RSM) are used to predict the bend angle and optimise the process parameters for laser bending of stainless steel. A three-dimensional sequentially coupled thermo-mechanical elasto-plastic finite element model, capable of simulating laser bending process, is developed and subsequently response surface methodology (RSM) is used to develop an empirical relation to predict the bend angle based on process parameters. The effects of laser power (125 to 375 W), scan velocity (10 to 30 mm/s), spot diameter (1.5 to 3 mm) and thickness (0.75 to 2.25 mm) on the bend angle are investigated. A quadratic polynomial equation for predicting the bend angle is developed. Optimum values of parameters are identified that would increase the productivity and reduce the total operating cost and the heat affected zone.

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Numerical investigation on the laser bending of stainless steel foil with pre-stresses

Cited by 35 publications

References 10 publications

Laser bending process of preloaded sheet metal

Laser bending process of preloaded sheet metal

Study of laser bending of a preloaded Titanium alloy sheet

Bend angle prediction and parameter optimisation for laser bending of stainless steel using FEM and RSM

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