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Incompressibility and axisymmetry : a modified B method

The paper deals with a B-type strain projection method with specific reference to axisymmetric incompressible solids. Essentially the (B double bar) method, which is reported in the present study, is based on Hughes' B-bar approach utilizing modified shape functions to represent the radial displacement and geometry. As a consequence of adopting these procedures the method results in an exact satisfaction of incompressibility constraints. The rationale of the method leads to the modified mean-dilatation approach for the case of an axisymmetric incompressible problem. It is interesting to note in the present work that the explicit influence of enhanced hoop strain is eliminated from the discrete divergence condition.