[en] A large number of advanced finite element shell formulations have been developed, but their adoption is hindered by complexities of transforming mathematical formulations into computer code. Furthermore, it is often not straightforward to adapt existing implementations to emerging frontier problems in thin structural mechanics including nonlinear material behaviour, complex microstructures, multi-physical couplings, or active materials. We show that by using a high-level mathematical modelling strategy and automatic code generation tools, a wide range of advanced plate and shell finite element models can be generated easily and efficiently, including: the linear and non-linear geometrically exact Naghdi shell models, the Marguerre-von K ́arm ́an shallow shell model, and the Reissner-Mindlin plate model. To solve shear and membrane-locking issues, we use: a novel re-interpretation of the Mixed Interpolation of Tensorial Component (MITC) procedure as a mixed-hybridisable finite element method, and a high polynomial order Partial Selective Reduced Integration (PSRI) method. The effectiveness of these approaches and the ease of writing solvers is illustrated through a large set of verification tests and demo codes, collected in an open-source library, FEniCS-Shells, that extends the FEniCS Project finite element problem solving environment.
Disciplines :
Physics Engineering, computing & technology: Multidisciplinary, general & others Mathematics
Author, co-author :
Hale, Jack ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Brunetti, Matteo
Bordas, Stéphane ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Maurini, Corrado
External co-authors :
yes
Language :
English
Title :
Simple and extensible plate and shell finite element models through automatic code generation tools
Publication date :
15 October 2018
Journal title :
Computers and Structures
ISSN :
0045-7949
Publisher :
Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom
FP7 - 279578 - REALTCUT - Towards real time multiscale simulation of cutting in non-linear materials with applications to surgical simulation and computer guided surgery
FnR Project :
FNR6693582 - Advanced Computational Methods For The Simulation Of Cutting In Surgery, 2013 (01/01/2014-31/12/2015) - Jack Samuel Hale
Funders :
Agence National de la Recherche CE - Commission Européenne [BE]