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Incompatible Modes for Volumetric Shell Elements in Explicit Time Integration
Author(s) -
Mattern Steffen,
Schmied Christoph,
Schweizerhof Karl
Publication year - 2012
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201210081
Subject(s) - degrees of freedom (physics and chemistry) , diagonal , element (criminal law) , shell (structure) , order (exchange) , computer science , mathematics , engineering , physics , geometry , mechanical engineering , law , economics , finance , quantum mechanics , political science
Explicit time integration is characterized by small time steps and efficient global operations, leading to a domination of element processing regarding CPU‐time, in particular, as diagonal mass matrices are used. The Enhanced Assumed Strain (EAS) approach requires local operations in order to condense‐out additional degrees of freedom. The method of Incompatible Modes (IM) is presented as an alternative, where incompatible degrees of freedom are included in the global equations, which leads to efficient element formulations. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)