Elastic springback in plates and beams formed by bending

Sidebottom, O. M.; Gebhardt, Clemens

doi:10.1007/bf02324252

Cited by 22 publications

(9 citation statements)

References 3 publications

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“…Due to springback, the radius through which the plate is actually bent must be smaller than the required radius. The amount of springback depends up on several variables as follows (Raval, 2002;Sidebottom and Gebhardt, 1979):…”

Section: Elastic Springback In Plates Formed By Bendingmentioning

confidence: 99%

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Analytical and empirical modeling of top roller position for three-roller cylindrical bending of plates and its experimental verification

Gandhi¹,

Raval

2008

Journal of Materials Processing Technology

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Section: Elastic Springback In Plates Formed By Bendingmentioning

confidence: 99%

“…During the experiments, center distance between bottom rollers (a) was set as 470 mm. Dimensions of the plates were so selected that plane strain condition was satisfied (Sidebottom and Gebhardt, 1979). Specimens for roller bending and material testing were prepared by cutting along the rolling direction.…”

Section: Experimentationmentioning

confidence: 99%

Analytical and empirical modeling of top roller position for three-roller cylindrical bending of plates and its experimental verification

Gandhi¹,

Raval

2008

Journal of Materials Processing Technology

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“…(26), was calculated based on the concept of residual stress reported by Hosford and Caddel [30]. To ensure the plastic deformation in each successive passes of multi-pass bending; residual stress present in the material due to deformation in the previous pass should be overcome.…”

Section: Top Roller Position (U) For Desired Radius At Reference End mentioning

confidence: 99%

Formulation of springback and machine setting parameters for multi-pass three-roller cone frustum bending with change of flexural modulus

2009

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Roller bending process can be used to plastically deform a sheet or plate to hollow shapes of constant (i.e. cylindrical, elliptical) or varying (i.e. cone frustum) cross sections. Cylindrical and conical shells are the basic components of vessels and structures used for the various engineering applications. Reported work discuss the formulation of springback and machine setting parameters for continuous multi-pass bending of cone frustum on threeroller bending machines with non-compatible (cylindrical) rollers. Effect of change of flexural modulus during the deformation on springback prediction is analyzed. Effect of plate initial radius, number of bending passes and step interval for two successive bend radii on the springback is presented. Analytical results of multi-pass cone frustum bending were verified with the cone frustum bending experiments and found to be in good agreement. Work reported is expected to improve the accuracy and productivity by facilitating the fabrication engineers.

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“…Two years later. Chapman experimentally determined the springback properties of an aluminum alloy [7], Over the next 40 years, numerous other researchers developed their own analytical predictions and performed springback experiments with varying degrees of success [8][9][10][11][12][13]. The most notable of these efforts were those by Gardiner [10] and Johnson and Yu [13].…”

Section: Introductionmentioning

confidence: 99%

The Springback Characteristics of a Porous Tantalum Sheet-Metal

Nebosky

Schmid

Sanchez-Caballero

2011

Journal of Manufacturing Science and Engineering

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This study examines the elastic recovery (springback) of a porous tantalum foam after sheet forming operations. The foam and sheet-like form is applicable to bone ingrowth surfaces on oithopedic implants and is desirable due to its combination of high strength, low relative density, and excellent osteoconductive properties. Forming of the foam improves nestability during manufacture and is essential to have the material achieve the desired shape. Experimentally, bending about a single axis using a wiping die is studied by obsening cracking and measuring springback. Die radius and clearance strongly affect the springback properties, while punch speed, embossing, die radius, and clearance all influence cracking. To study the effect of the foam microstructure, bending also is e.xamined numerically. A horizontal hexagonal mesh comprised of beam elements is employed, which allows for the densification that occurs during forming. The flow strength of individual tantalum struts is directly measured in an atomic force microscope. The numerical results show that as the hexagonal cells are elongated along the sheet length, elastic springback decreases. By changing the material properties of the struts, the models can be modified for use with other open-cell metallic foams,

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Elastic springback in plates and beams formed by bending

Cited by 22 publications

References 3 publications

Analytical and empirical modeling of top roller position for three-roller cylindrical bending of plates and its experimental verification

Analytical and empirical modeling of top roller position for three-roller cylindrical bending of plates and its experimental verification

Formulation of springback and machine setting parameters for multi-pass three-roller cone frustum bending with change of flexural modulus

The Springback Characteristics of a Porous Tantalum Sheet-Metal

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