Shell (structure)

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A shell is a type of structural element which is characterized by its geometry, being a three-dimensional solid whose thickness is very small when compared with other dimensions, and in structural terms, by the stress resultants calculated in the middle plane displaying components which are both coplanar and normal to the surface. Essentially, a shell can be derived from a plate by two means: by initially forming the middle surface as a singly or doubly curved surface,[1] and by applying loads which are coplanar to a plate's plane which generate significant stresses.

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  1. ^ O.C. Zienkiewicz and R.L. Taylor. The finite element method for solid and structural mechanics.