A new locking-free formulation for the SHB8PS solid–shell element: non-linear benchmark problems
Communication sans acte
In this work, a new physically stabilized and locking-free formulation of the SHB8PS element is presented. This is a solid-shell element based on a purely 3D formulation. It 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 deformation 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.
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Assumed-strain solid-shell formulation for the six-node finite element SHB6: Evaluation on non-linear benchmark problems Article dans une revue avec comité de lectureABED-MERAIM, Farid; TRINH, Vuong-Dieu; COMBESCURE, Alain (Hermès / Paris : Lavoisier, 2012)The current contribution proposes a six-node prismatic solid-shell denoted as (SHB6). The formulation is extended to geometric and material non-linearities, and focus will be placed on its validation on non-linear benchmark ...
Article dans une revue avec comité de lectureABED-MERAIM, Farid; COMBESCURE, Alain (Techno-press Ltd, 2011)The formulation of a six-node solid-shell called SHB6, which is a linear, isoparametric element, is discussed. An eigenvalue analysis of the element stiffness matrix is first carried out. Several modifications are introduced ...
Communication sans acteABED-MERAIM, Farid; TRINH, Vuong-Dieu; COMBESCURE, Alain (Pavel Solin, Pavel Karban, Jaroslav Kruis, 2012)In recent years, considerable effort has been devoted to the development of 3D finite elements able to model thin structures (Cho et al., 1998; Sze and Yao, 2000; Abed-Meraim and Combescure, 2002; Vu-Quoc and Tan, 2003; ...
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Formulation of new quadratic solid-shell elements and their evaluation on popular benchmark problems Communication sans acteTRINH, Vuong-Dieu; ABED-MERAIM, Farid; COMBESCURE, Alain (2010)Over the last decade, considerable progress has been made in the development of three-dimensional finite elements capable of modeling thin structures. The coupling between solid and shell formulations has proven to be an ...