2011
DOI: 10.1007/978-3-642-21855-2_24
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Consistency Issues in Shell Elements for Geometrically Nonlinear Problems

Abstract: Some singular concepts and non-standard practices in the FEM solution of geometrically nonlinear shell problems are highlighted and discussed. In particular, four issues are addressed. (i) The question of the drilling rotation: a shell is essentially a non-polar medium in its tangent plane, so the drilling rotation is a redundant d.o.f. to be defined by an extra stress field, and the latter ought to hold as a primary unknown field of the surface mechanics. It is shown that a proper constitutive characterizatio… Show more

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