An analytical model of laser bending angle under preload

Guo, Yankuo; Shi, Yongjun; Wang, Xiaogang; Sun, Renjuan; Bing, Zhenfei

doi:10.1007/s00170-020-05521-5

Cited by 8 publications

(3 citation statements)

References 16 publications

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“…The buckling mechanism is based on creating a lateral thermal gradient (a heated membrane region), which pushes outward and causes the membrane to buckle. The buckling direction is random in the absence of other factors and can go up or down [21]. It is possible to control this direction consistently by introducing a pre-strain, but it is difficult to replicate a consistent pre-strain in a more complex pattern.…”

Section: Lasermentioning

confidence: 99%

Laser Forming of Compliant Mechanisms

Ames

Smith

Lazarus

et al. 2023

ASME Open Journal of Engineering

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Small-scale flexible (or compliant) mechanisms are valuable in replacing rigid components while retaining comparable motion and behavior. However, fabricating such mechanisms on this scale (from 0.01 to 10 cm) proves difficult, especially with thin sheet metals. The manufacturing method of laser forming, which uses a laser to cut and bend metal into desired shapes, could facilitate this fabrication. However, specific methods for designing mechanisms formed by lasers need to be developed. This work presents laser forming as a means for creating compliant mechanisms on this scale with thin sheet metal. The unique challenges for designing mechanisms to be laser formed are explored, and new adaptations of existing designs are fabricated and discussed. The design of basic “building-block” features is developed for several mechanisms: a parallel-guided mechanism, a cross-axis flexural pivot, a lamina emergent torsional (LET) joint array, a split-tube flexure, and a bi-stable switch. These mechanisms are shown to perform repeatable behavior and motion comparable to existing nonlaser-formed versions. The further possibilities for fabricating compliant mechanisms with laser forming are explored, as advanced applications can benefit from using lasers to create compliant mechanisms from thin sheet metal.

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Section: Lasermentioning

confidence: 99%

Laser Forming of Compliant Mechanisms

Ames

Smith

Lazarus

et al. 2023

ASME Open Journal of Engineering

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“…As discussed, force-assisted laser forming can bend sheets more effectively. An analytical model proposed by Guo et al [107] for prediction of the bending angle in the presence of preload. The model is developed according to the buckling mechanism (BM) using thermal and preload stress and strain relationship in the heating zone and the buckling mechanism [107].…”

Section: Analytical Approachesmentioning

confidence: 99%

“…An analytical model proposed by Guo et al [107] for prediction of the bending angle in the presence of preload. The model is developed according to the buckling mechanism (BM) using thermal and preload stress and strain relationship in the heating zone and the buckling mechanism [107]. The edge effect is undesirable in laser forming, and the bending angle is not constant along the scanning line.…”

Section: Analytical Approachesmentioning

confidence: 99%

Recent Advances in the Laser Forming Process: A Review

Safari

Sousa

Joudaki

2020

Metals

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Laser forming is an emerging manufacturing process capable of producing either uncomplicated and complicated shapes by employing a concentrated heating source. The heat source movement creates local softening, and a plastic strain will be induced during the rise of temperature and the subsequent cooling. This contactless forming process may be used for the simple bending of sheets and tubes or fabrication of doubly-curved parts. Different studies have been carried out over recent years to understand the mechanism of forming and predicting the bending angle. The analysis of process parameters and search for optimized manufacturing conditions are among the most discussed topics. This review describes the main recent findings in the laser forming of single and multilayer sheets, composite and fiber-metal laminate plates, force assisted laser bending, tube bending by laser beam, the optimization technique implemented for process parameters selection and control, doubly-curved parts, and the analytical solutions in laser bending. The main focus is set to the researches published since 2015.

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An autonomous laser kirigami method with low-cost real-time vision-based surface deformation feedback system

Wang

et al. 2021

Int J Adv Manuf Technol

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An analytical model of laser bending angle under preload

Cited by 8 publications

References 16 publications

Laser Forming of Compliant Mechanisms

Laser Forming of Compliant Mechanisms

Recent Advances in the Laser Forming Process: A Review

An autonomous laser kirigami method with low-cost real-time vision-based surface deformation feedback system

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