Imperfections and buckling in cylindrical shells with consistent residual stresses

Holst, J. M. F. G.; Rotter, J.; Calladine, C. R.

doi:10.1016/s0143-974x(99)00047-4

Cited by 27 publications

(14 citation statements)

References 3 publications

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“…the strain block is rectangular). This approach has been used by Rotter [6], Holst et al [16,17], and Pircher and Bridge [3]. Despite the simplicity of the approach, the resulting weld depressions and residual stresses are realistic in form.…”

Section: Shrinkage Strain Approachmentioning

confidence: 99%

Buckling behaviour of large steel cylinders with patterned welds

Hübner

Teng

Saal

2006

International Journal of Pressure Vessels and Piping

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Section: Shrinkage Strain Approachmentioning

confidence: 99%

Buckling behaviour of large steel cylinders with patterned welds

Hübner

Teng

Saal

2006

International Journal of Pressure Vessels and Piping

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“…Appropriate care was taken with mesh refinement where the imperfect geometry led to high local curvatures. The shell was assumed to be stress free in its imperfect geometry, since studies of consistent residual stresses in similar shells (Rotter, 1996;Holst et al, 2000) suggest that residual stresses are both small and usually beneficial to the shell buckling strength under axial compression.…”

Section: Geometry Loading and Materials Propertiesmentioning

confidence: 99%

Imperfection sensitivity of thin elastic cylindrical shells subject to partial axial compression

Song

Teng

Rotter

2004

International Journal of Solids and Structures

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“…Two rationally-based and idealised mathematical characterisations of the shape of this depression were proposed by Rotter and Teng [55]. This has since become one of the most common and probably most deleterious realistic imperfection forms for thin-walled hollow cylinders under axial compression [41,56,57,58,59,60]. Known as the 'axisymmetric weld depression', it is defined using the present notation as:…”

Section: Behaviour Of Spiral Welded Cylinders Under Axial Compressionmentioning

confidence: 99%

Modelling and behaviour of cylindrical shell structures with helical features

Sadowski

Rotter

2014

Computers & Structures

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Spiral welding or bonding is a particularly efficient and cost-effective method of constructing continuous tubes. However the understanding of the mechanics of such structures is not yet well developed. This is in no small part due to the difficulties involved in their computational analysis.Cylindrical shells are traditionally modelled using rectangular finite elements oriented parallel to the meridional and circumferential axes. However, spiral features are particularly challenging to model because such features are not orthogonal to the axes of the cylinder. Commercial finite element pre-processors often struggle to mesh these with anything other than a free triangulation. A superior mesh would consist of wellconditioned rectangular elements oriented orthogonally with respect to the axes of the helix, termed a 'helical mesh', but this requires significant programming effort. A helical mesh is particularly important if features of the shell such as geometric imperfections, residual stresses, weld material and heat affected zones, and bonding in systems using adhesives are required to follow the helical form. Helically wound structural forms are widely used in different applications that demand continuous cylindrical forms. The most common uses in structural engineering are in spiral wound tubes, piles, chimneys and pipelines. This paper describes a powerful computational procedure developed by the authors to generate high quality helical meshes. Special emphasis is placed on the modelling of geometric deviations defined relative to the helix, appropriate for the analysis of spiral welded and stiffened tubes. The effect of helical meshing is illustrated using benchmark examples of perfect and imperfect cylinders under axial compression.Published in: Computers and Structures, 133C,[90][91][92][93][94][95][96][97][98][99][100][101][102]

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Imperfections and buckling in cylindrical shells with consistent residual stresses

Cited by 27 publications

References 3 publications

Buckling behaviour of large steel cylinders with patterned welds

Buckling behaviour of large steel cylinders with patterned welds

Imperfection sensitivity of thin elastic cylindrical shells subject to partial axial compression

Modelling and behaviour of cylindrical shell structures with helical features

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