The discrete strain gap method and membrane locking

Frank Koschnick, Manfred Bischoff, Natalia Camprubí, Kai Uwe Bletzinger

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

The discrete shear gap (DSG) method, initially proposed for the elimination of transverse shear locking in plate and shell finite elements, is extended to a more general concept, rephrasing 'DSG' as 'discrete strain gap'. We focus on the application of the method to the problem of membrane locking in beam and shell finite elements in the present paper. It turns out that a straightforward extension of the original DSG method is suitable to avoid membrane locking for both triangles and quadrilaterals. Moreover, there are strong indications that the presented idea includes the potential for a general formulation of locking-free structural finite elements, equally well suited for beams, plates, shells and solids.

Original languageEnglish
Pages (from-to)2444-2463
Number of pages20
JournalComputer Methods in Applied Mechanics and Engineering
Volume194
Issue number21-24 SPEC. ISS.
DOIs
StatePublished - 10 Jun 2005

Keywords

  • DSG method
  • Membrane locking
  • Shell finite elements
  • Triangles and quadrilaterals

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