Springback analysis of thin bent sheets on elastomeric die

Braga, M. T.; Filho, L. A. Moreira; Menezes, Miguel Ângelo

doi:10.1007/s12289-010-0957-z

Cited by 7 publications

(5 citation statements)

References 3 publications

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“…5 c), which is likely due to microstructural changes under bending stress. For example, fiber orientation and degree of crystalline orientation would increase during tension, while decrease during compression 34 , 42 , which is similar to an increase and a decrease in MOE during the tension and compression phase, respectively 43 , 44 . The springback in bamboo is caused by multiple factors: (1) uneven distribution of stress along cross section (there is a higher stress in the outside half tube wall than the inside) 41 ; (2) the higher MOE in the outside tube wall than the inside; and (3) the higher MOE in the first half bamboo tube wall than the latter half.…”

Section: Resultsmentioning

confidence: 77%

Effect of bending on radial distribution density, MFA and MOE of bent bamboo

Fei

et al. 2022

Sci Rep

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One of the excellent characteristics of bamboo is the deformation stability. However, the reasons for the good bending stability of bamboo have not been well studied. In this study, we examined the pathways that controls bending deformation in bamboo. A hand-bent phyllostachys iridescens member was chosen to examine continuous density distribution, microfibril angle (MFA) and modulus of elasticity (MOE) along radial direction using SilviScan analysis. Our results show that in bent bamboo, MFA is lower in tension sample and higher in compression sample than neutral sample. There is a strong linear positive correlation between density and MOE, while negative linear correlation between MOE and MFA and no obvious linear correlation between MFA and density. Increased bending was influential in primarily changing the MOE, while also altering the density distribution and MFA. Our results demonstrate variation in density, MOE and MFA distribution along radial direction of tension, neutral and compression samples, which play an important role in maintaining the bending characteristics of bamboo.

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Section: Resultsmentioning

confidence: 77%

Effect of bending on radial distribution density, MFA and MOE of bent bamboo

Fei

et al. 2022

Sci Rep

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“…The influence of the elastomer hardness was exemplarily investigated during the manufacturing of a rear suspension of a car [11]. More recent studies deal with the creation of an analytical model to predict the springback [12] and the expansion of the forming limits [13].…”

Section: Methods Of Springback Compensation In Sheet Metal Bendingmentioning

confidence: 99%

Analysis of the Potential of Incremental Stress Superposition on Air Bending

Weinrich

Becker

Maevus

et al. 2014

KEM

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Springback and limited forming limits of modern high strength steels are a big challenge in manufacturing engineering. Both aspects are crucial in sheet metal bending processes. Different modifications of the air bending process have already been developed in order to reduce springback and also to increase the forming limits of materials. A new method (the incremental stress superposition on air bending) has been developed. Studies of this new process alternative show a positive effect on the springback behavior. In order to investigate the potential of this process a comparison with other already established bending processes have been carried out. A possible process control to extend the forming limits has also been investigated.

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“…In order to ensure the reliability of numerical simulation, constantly adjust the Et and σy to make the calculated result to as much as possible close to the experimental value and to ensure the minimum total error [4]. After the trial, when σy=355MPa ， Et=20000MPa the results are satisfactory.…”

Section: Constitutive Relationsmentioning

confidence: 99%

Hull Plate Bending Springback Prediction Based on Artificial Neural Network

Wang

et al. 2014

AMR

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In the process of three-dimensional curved hull plate forming, springback caused serious influence on the forming accuracy, in order to ensure the forming quality of the asymmetric multiple pressure heads CNC bending machine of ship hull 3D surface plate, to achieve the automatic processing, it is necessary to solve the problem of springback in the hull plate forming process. It is rarely to see the research on the cold bending springback problem of middle-thickness hull plate now. To established nonlinear model of plate parameters and springback amount based on BP neural network, accurately analyzing the prediction of springback, and getting the sptringback prediction model based on the BP neural network in the Matlab programming.

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Springback analysis of thin bent sheets on elastomeric die

Cited by 7 publications

References 3 publications

Effect of bending on radial distribution density, MFA and MOE of bent bamboo

Effect of bending on radial distribution density, MFA and MOE of bent bamboo

Analysis of the Potential of Incremental Stress Superposition on Air Bending

Hull Plate Bending Springback Prediction Based on Artificial Neural Network

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