Shell (structure)

A shell is a three-dimensional solid

Thin-shell structures (also called plate and shell structures) are lightweight constructions using

A thin shell is defined as a shell with a thickness which is small compared to its other dimensions and in which deformations are not large compared to thickness. A primary difference between a shell structure and a plate structure is that, in the unstressed state, the shell structure has curvature as opposed to the plates structure which is flat. Membrane action in a shell is primarily caused by in-plane forces (plane stress), but there may be secondary forces resulting from flexural deformations. Where a flat plate acts similar to a beam with bending and shear stresses, shells are analogous to a cable which resists loads through tensile stresses. The ideal thin shell must be capable of developing both tension and compression.^[2]

Types

The most popular types of thin-shell structures are:

• Concrete shell structures, often cast as a monolithic dome or stressed ribbon bridge or saddle roof
• Lattice shell structures, also called gridshell structures, often in the form of a geodesic dome or a hyperboloid structure
• pneumatic structures
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See also

References

Further reading

• ISBN 9780415419673
  .
• Suchov, Vladimir G. (1990). Rainer Gaefe (ed.). VLADIMIR G. SUCHOV 1853-1939; Die Kunst Der Sparsamen Konstruktion (1st ed.). Stuttgart: Deutsche Verlags-Anstalt.
  ISBN 9783421029843
  .

External links

Wikiquote has quotations related to Shell (structure).

Wikimedia Commons has media related to Thin-shell structures.

• Thin-shell structures
• Double thin-shells structures
• Hypar & Concrete Shells
• Past and Future of Grid Shell Structures
• Shape optimization of Shell and Spatial structure
• Lattice Shell for Space Vehicles
• International Association for Shell and Spatial Structures

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