A technique for the measurement of bending strains in plates or shells

Kitching, R.; Hughes, J F; Cordiner, J.

doi:10.1016/0308-0161(73)90018-5

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…Very few attempts have been reported in the literature to carry out through‐thickness strain measurements in specimens bent to large curvatures (i.e. small radii) during continuous sheet bending . Many of the techniques are not amenable to through‐thickness strain field measurements because of curvature changes, rotations and large strains during small radius bending.…”

Section: Literature Reviewmentioning

confidence: 99%

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Assessment of Analytical Models of Pure Bending of Sheet Materials Using the Digital Image Correlation Method

Govindasamy

Jain

2016

Strain

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Bending of sheet materials is a common forming mode for shaping sheet components. Although many numerical models of bending, both analytical and numerical simulations based, are available in the literature, extensive experimental validations have been rather limited. A new bend test method and complementary three-dimensional finite element (FE) simulation of the experiments are employed to assess the predictions from an advanced analytical and FE model of pure bending of aluminium sheet materials. The experimental set-up developed and utilised is an open concept design that allows access to the tensile surface and through-thickness region in the vicinity of the specimen bend line to continuously record images of the deforming specimen with two cameras. The specimen images are analysed for strains using an online strain mapping system based on digital image correction method. Tangential strain distribution results from the models in terms of material thinning in the bend region are compared with those from the experiments on AA2024 aluminium sheet material by considering the responses from the specimen edges and mid-width regions at the bend line. Furthermore, the tangential and radial stress distributions on the through-thickness section of the specimen from the analytical model are compared with those from the FE model. The results from experiments, FE model and analytical model are compared and discussed in the light of the experimental data and the assumptions involved in the development of the models.

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Section: Literature Reviewmentioning

confidence: 99%

“…Also, the space is limited for placement of camera for continuous recording of images of deforming grid pattern. In some cases, good designs are available, but they have not been utilised to assess the bending models .…”

Section: Literature Reviewmentioning

confidence: 99%

Assessment of Analytical Models of Pure Bending of Sheet Materials Using the Digital Image Correlation Method

Govindasamy

Jain

2016

Strain

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“…The procedure was to obtain results from the gauges mounted directly on the metal surface, remove the gauges after noting their position carefully, attach the spacers, then finally position the strain Fig. 6. Arrangement for measuring radial movement measured to determine strains on the enclosed surface is described in (6).…”

Section: Fig 5 Increase In Radius Of Parallel Circle For Unit Pressurementioning

confidence: 99%

“…6. Arrangement for measuring radial movement measured to determine strains on the enclosed surface is described in (6). Since this method had not previously been used on a shell having a curvature as great as that of the limpet coil, a preliminary proving test was carried out on a cylinder of the same radius and results showed that the factors quoted in (6) to allow for local stiffening of the shell by the spacers could be used.…”

Section: Fig 5 Increase In Radius Of Parallel Circle For Unit Pressurementioning

confidence: 99%

Analysis of stresses in a limpet-coil pressure vessel due to pressure in the coil

Kitching

Better

1974

Journal of Strain Analysis

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A theoretical analysis was carried out to determine the distribution of stresses and radial deflections due to internal pressure in the limpet of a limpet-coil pressure vessel. A computer programme was developed to carry out the complete calculations. Theoretical results for a vessel having the dimensions of a test vessel were compared with the corresponding experimental values obtained from strain-gauge and deflection-gauge measurements on the test vessel itself.

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Radial loads on pad reinforced nozzles in spherical pressure vessels—A theoretical analysis and experimental investigation

Soliman

Gill

1978

International Journal of Pressure Vessels and Piping

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A technique for the measurement of bending strains in plates or shells

Cited by 6 publications

References 2 publications

Assessment of Analytical Models of Pure Bending of Sheet Materials Using the Digital Image Correlation Method

Assessment of Analytical Models of Pure Bending of Sheet Materials Using the Digital Image Correlation Method

Analysis of stresses in a limpet-coil pressure vessel due to pressure in the coil

Radial loads on pad reinforced nozzles in spherical pressure vessels—A theoretical analysis and experimental investigation

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