@inproceedings{20242016090463 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2025 Elsevier Inc.},
copyright = {Compendex},
title = {On the definition of geometrical imperfections in the F.E. modelling of CHS in compression},
journal = {Proceedings of the Annual Stability Conference Structural Stability Research Council, SSRC 2024},
author = {Echeverri, Mariana and Rico, Pablo and Li, Liya and Graciano, Carlos and Boissonnade, Nicolas},
year = {2024},
address = {San Antonio, TX, United states},
abstract = {<div data-language="eng" data-ev-field="abstract">This paper investigates the local buckling behavior of steel Circular Hollow Sections (CHS). Design recommendations for CHS are known to be somewhat conservative and sometimes inappropriate, namely with respect to section classification. CHS sections also provide a peculiar response to local buckling, being quite sensitive to initial geometrical imperfections (both with respect to their shape and amplitude), as a result of a shell-like response. This paper reports numerical investigations towards a better characterization of initial imperfections in the response of CHS sections under compression. The results of non-linear shell F.E. sensitivity studies on geometrical imperfections are provided, comparing different shapes and amplitudes to literature results. Typically, the introduction of initial imperfections has relied on the first eigenmode; however, the local buckling response can vary significantly compared to experimental stub column tests in some cases, especially for slender sections. Finally, the paper concludes with practical modeling recommendations for more accurate representations of CHS section behavior under compression.<br/></div> © SSRC 2024. All rights reserved.},
key = {Buckling},
%keywords = {Geometry;},
%note = {Buckling behaviour;Design recommendations;FE modeling;FE-modelling;Geometrical imperfections;Hollow section;Initial geometrical imperfections;Initial imperfection;Local buckling;Numerical investigations;},
}

{"_id":"EdTMHrEKZzRwsD6Pi","bibbaseid":"echeverri-rico-li-graciano-boissonnade-onthedefinitionofgeometricalimperfectionsinthefemodellingofchsincompression-2024","author_short":["Echeverri, M.","Rico, P.","Li, L.","Graciano, C.","Boissonnade, N."],"bibdata":{"bibtype":"inproceedings","type":"inproceedings","language":"English","copyright":"Compendex","title":"On the definition of geometrical imperfections in the F.E. modelling of CHS in compression","journal":"Proceedings of the Annual Stability Conference Structural Stability Research Council, SSRC 2024","author":[{"propositions":[],"lastnames":["Echeverri"],"firstnames":["Mariana"],"suffixes":[]},{"propositions":[],"lastnames":["Rico"],"firstnames":["Pablo"],"suffixes":[]},{"propositions":[],"lastnames":["Li"],"firstnames":["Liya"],"suffixes":[]},{"propositions":[],"lastnames":["Graciano"],"firstnames":["Carlos"],"suffixes":[]},{"propositions":[],"lastnames":["Boissonnade"],"firstnames":["Nicolas"],"suffixes":[]}],"year":"2024","address":"San Antonio, TX, United states","abstract":"<div data-language=\"eng\" data-ev-field=\"abstract\">This paper investigates the local buckling behavior of steel Circular Hollow Sections (CHS). Design recommendations for CHS are known to be somewhat conservative and sometimes inappropriate, namely with respect to section classification. CHS sections also provide a peculiar response to local buckling, being quite sensitive to initial geometrical imperfections (both with respect to their shape and amplitude), as a result of a shell-like response. This paper reports numerical investigations towards a better characterization of initial imperfections in the response of CHS sections under compression. The results of non-linear shell F.E. sensitivity studies on geometrical imperfections are provided, comparing different shapes and amplitudes to literature results. Typically, the introduction of initial imperfections has relied on the first eigenmode; however, the local buckling response can vary significantly compared to experimental stub column tests in some cases, especially for slender sections. Finally, the paper concludes with practical modeling recommendations for more accurate representations of CHS section behavior under compression.<br/></div> © SSRC 2024. All rights reserved.","key":"20242016090463","bibtex":"@inproceedings{20242016090463 ,\nlanguage = {English},\ncopyright = {Compilation and indexing terms, Copyright 2025 Elsevier Inc.},\ncopyright = {Compendex},\ntitle = {On the definition of geometrical imperfections in the F.E. modelling of CHS in compression},\njournal = {Proceedings of the Annual Stability Conference Structural Stability Research Council, SSRC 2024},\nauthor = {Echeverri, Mariana and Rico, Pablo and Li, Liya and Graciano, Carlos and Boissonnade, Nicolas},\nyear = {2024},\naddress = {San Antonio, TX, United states},\nabstract = {<div data-language=\"eng\" data-ev-field=\"abstract\">This paper investigates the local buckling behavior of steel Circular Hollow Sections (CHS). Design recommendations for CHS are known to be somewhat conservative and sometimes inappropriate, namely with respect to section classification. CHS sections also provide a peculiar response to local buckling, being quite sensitive to initial geometrical imperfections (both with respect to their shape and amplitude), as a result of a shell-like response. This paper reports numerical investigations towards a better characterization of initial imperfections in the response of CHS sections under compression. The results of non-linear shell F.E. sensitivity studies on geometrical imperfections are provided, comparing different shapes and amplitudes to literature results. Typically, the introduction of initial imperfections has relied on the first eigenmode; however, the local buckling response can vary significantly compared to experimental stub column tests in some cases, especially for slender sections. Finally, the paper concludes with practical modeling recommendations for more accurate representations of CHS section behavior under compression.<br/></div> © SSRC 2024. All rights reserved.},\nkey = {Buckling},\n%keywords = {Geometry;},\n%note = {Buckling behaviour;Design recommendations;FE modeling;FE-modelling;Geometrical imperfections;Hollow section;Initial geometrical imperfections;Initial imperfection;Local buckling;Numerical investigations;},\n} \n\n\n","author_short":["Echeverri, M.","Rico, P.","Li, L.","Graciano, C.","Boissonnade, N."],"id":"20242016090463","bibbaseid":"echeverri-rico-li-graciano-boissonnade-onthedefinitionofgeometricalimperfectionsinthefemodellingofchsincompression-2024","role":"author","urls":{},"metadata":{"authorlinks":{}}},"bibtype":"inproceedings","biburl":"https://bibbase.org/network/files/vr93P5xh9GQ9oiwqW","dataSources":["2MJsacZ4HG58KXFAY","aycC6rRW8eMJkiJBs","svEcTSnbqnioEMadv","as5h2dbw4j3f6ijA7","bsavQQhdeQCjQYBnW","crgetHAdhXyFEJo52","RLXPrBx6GPjManXQT"],"keywords":[],"search_terms":["definition","geometrical","imperfections","modelling","chs","compression","echeverri","rico","li","graciano","boissonnade"],"title":"On the definition of geometrical imperfections in the F.E. modelling of CHS in compression","year":2024}