Open AccessA physically stabilized and locking-free formulation of the (SHB8PS) solid-shell element
Author(s) -
Farid AbedMeraim,
Alain Combescure
Publication year - 2007
Publication title -
european journal of computational mechanics
Language(s) - English
Resource type - Journals
eISSN - 2642-2085
pISSN - 2642-2050
DOI - 10.13052/remn.16.1037-1072
Subject(s) - spurious relationship , finite element method , shell (structure) , work (physics) , projection (relational algebra) , mechanics , materials science , physics , algorithm , structural engineering , computer science , engineering , mechanical engineering , composite material , machine learning
In this work, the formulation of the SHB8PS finite element is reviewed in order to eliminate some persistent membrane and shear locking phenomena. This is a solid-shell element based on a purely three-dimensional formulation. In fact, the element has eight nodes as well as five integration points, all distributed along the “thickness” direction. Consequently, it can be used for the modeling of thin structures, while providing an accurate description of the various through-thickness phenomena. The reduced integration has been used in order to prevent some locking phenomena and to increase computational efficiency. The spurious zero-energy modes due to the reduced integration are efficiently stabilized, whereas the strain components corresponding to locking modes are eliminated with a projection technique following the Enhanced Assumed Strain (EAS) method.