A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells

Fil: Godoy, Luis A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.

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Autores principales: Godoy, Luis A., Jaca, Rossana C., Sosa, Eduardo M., Flores, Fernando G.
Formato: conferenceObject
Lenguaje:Inglés
Publicado: 2024
Materias:
Finite elements
Reduced energy method
Perturbation methods
Estructuras
Ingeniería Civil
Ingeniería Estructural
Acceso en línea:http://hdl.handle.net/11086/550946
Aporte de:
Repositorio Digital Universitario (UNC) de Universidad Nacional de Córdoba
id I10-R141-11086-550946
record_format dspace
spelling I10-R141-11086-5509462024-03-08T06:21:46Z A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells Godoy, Luis A. Jaca, Rossana C. Sosa, Eduardo M. Flores, Fernando G. Finite elements Reduced energy method Perturbation methods Estructuras Ingeniería Civil Ingeniería Estructural Fil: Godoy, Luis A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Godoy, Luis A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Estructuras; Argentina. Fil: Jaca, Rossana C. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Ingeniería Civil; Argentina. Fil: Sosa, Eduardo M. West Virginia University. Civil and Environmental Engineering Department; Estados Unidos. Fil: Flores, Fernando G. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Flores, Fernando G. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Estructuras; Argentina. The strategy of Reduced Stiffness (or Reduced Energy) Analysis, in which selected energy components are eliminated to account for mode interaction and imperfection-sensitivity in a simplified way, was developed by Croll and co-workers since the early 1980s. This physical interpretation allows the formulation as an eigenvalue problem, in which the eigenvalue (critical load) is a lower bound to experiments and to nonlinear incremental analysis. This paper considers the computational implementation of both reduced stiffness and reduced energy approaches to the buckling of shell structures by means of perturbation techniques and penalty parameter methods. The structural configurations of interest in this work are cylindrical shells with or without a roof. The reduced stiffness approach has been implemented in a special purpose finite element code for shells of revolution, whereas the reduced energy methodology was implemented in a general purpose finite element code. The present results are compared with geometrically nonlinear analysis including geometric imperfections. Achievements and difficulties in extending the methodologies to complex problems in engineering practice are highlighted. http://congress.cimne.com/PANACM2015/frontal/doc/EbookPANACM2015.pdf Fil: Godoy, Luis A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Godoy, Luis A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Estructuras; Argentina. Fil: Jaca, Rossana C. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Ingeniería Civil; Argentina. Fil: Sosa, Eduardo M. West Virginia University. Civil and Environmental Engineering Department; Estados Unidos. Fil: Flores, Fernando G. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Flores, Fernando G. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Estructuras; Argentina. Ingeniería Estructural 2024-03-07T14:37:00Z 2024-03-07T14:37:00Z 2015 conferenceObject 978-84-943928-2-5 http://hdl.handle.net/11086/550946 eng Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ Electrónico y/o Digital
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-141
collection Repositorio Digital Universitario (UNC)
language Inglés
topic Finite elements
Reduced energy method
Perturbation methods
Estructuras
Ingeniería Civil
Ingeniería Estructural
spellingShingle Finite elements
Reduced energy method
Perturbation methods
Estructuras
Ingeniería Civil
Ingeniería Estructural
Godoy, Luis A.
Jaca, Rossana C.
Sosa, Eduardo M.
Flores, Fernando G.
A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
topic_facet Finite elements
Reduced energy method
Perturbation methods
Estructuras
Ingeniería Civil
Ingeniería Estructural
description Fil: Godoy, Luis A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
format conferenceObject
author Godoy, Luis A.
Jaca, Rossana C.
Sosa, Eduardo M.
Flores, Fernando G.
author_facet Godoy, Luis A.
Jaca, Rossana C.
Sosa, Eduardo M.
Flores, Fernando G.
author_sort Godoy, Luis A.
title A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
title_short A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
title_full A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
title_fullStr A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
title_full_unstemmed A penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
title_sort penalty approach to obtain lower bound buckling loads of imperfection-sensitive shells
publishDate 2024
url http://hdl.handle.net/11086/550946
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