Numerical modelling of stainless steel bolted T-stubs in tension
Numerical modelling of stainless steel bolted T-stubs in tension
Recently, a series of experimental tests and accompanying numerical studies has been conducted on austenitic and duplex stainless steel moment resisting connections which highlighted both the excellent ductility and significant overstrength exhibited by such connections as well as the severe conservatism of current design rules specified in EN 1993-1-8 when applied to stainless steel joints. This study builds upon a previous experimental research on bolted austenitic and duplex stainless steel T-stubs in tension conducted by the authors and reports in depth the development and validation of an advanced FE model able to predict the overall behaviour, failure modes and fracture mechanisms of bolted T-stubs in tension. Key simulation strategies regarding the explicit modelling of bolt geometry and overcoming numerical instabilities are discussed and recommendations on best modelling practices are made. The model is utilised thereafter to conduct parametric studies on austenitic, duplex and ferritic stainless steel T-stubs of various geometric configurations, thus investigating the effect of plate thickness, material grade, bolt spacing and bolt strength on the joint plastic resistance, ultimate capacity, ductility as well as overall response. Based on the obtained results, the design provisions of EN 1993-1-8 are assessed.
Bolted connections, Connections, Numerical modelling, Stainless steel, Stainless steel joints, T-stub, Tension resistance
Yapici, Orhan
f74887ee-9dd7-455a-afa9-b3d2c7e768bd
Theofanous, Marios
b2919184-ed3f-4ed5-b7e7-eb23e9a510b4
Afshan, Sheida
68dcdcac-c2aa-4c09-951c-da4992e72086
Yuan, Huanxin
60832ca0-e3b8-4215-820f-cd26f35af135
Dirar, Samir
525341c2-34cf-4c46-aa9c-efb4633b3a2b
1 August 2022
Yapici, Orhan
f74887ee-9dd7-455a-afa9-b3d2c7e768bd
Theofanous, Marios
b2919184-ed3f-4ed5-b7e7-eb23e9a510b4
Afshan, Sheida
68dcdcac-c2aa-4c09-951c-da4992e72086
Yuan, Huanxin
60832ca0-e3b8-4215-820f-cd26f35af135
Dirar, Samir
525341c2-34cf-4c46-aa9c-efb4633b3a2b
Yapici, Orhan, Theofanous, Marios, Afshan, Sheida, Yuan, Huanxin and Dirar, Samir
(2022)
Numerical modelling of stainless steel bolted T-stubs in tension.
Thin-Walled Structures, 177, [109432].
(doi:10.1016/j.tws.2022.109432).
Abstract
Recently, a series of experimental tests and accompanying numerical studies has been conducted on austenitic and duplex stainless steel moment resisting connections which highlighted both the excellent ductility and significant overstrength exhibited by such connections as well as the severe conservatism of current design rules specified in EN 1993-1-8 when applied to stainless steel joints. This study builds upon a previous experimental research on bolted austenitic and duplex stainless steel T-stubs in tension conducted by the authors and reports in depth the development and validation of an advanced FE model able to predict the overall behaviour, failure modes and fracture mechanisms of bolted T-stubs in tension. Key simulation strategies regarding the explicit modelling of bolt geometry and overcoming numerical instabilities are discussed and recommendations on best modelling practices are made. The model is utilised thereafter to conduct parametric studies on austenitic, duplex and ferritic stainless steel T-stubs of various geometric configurations, thus investigating the effect of plate thickness, material grade, bolt spacing and bolt strength on the joint plastic resistance, ultimate capacity, ductility as well as overall response. Based on the obtained results, the design provisions of EN 1993-1-8 are assessed.
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Numerical modelling of SS bolted-t-stubs in tension- TWS 2022
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Accepted/In Press date: 7 May 2022
Published date: 1 August 2022
Additional Information:
Publisher Copyright:
© 2022 Elsevier Ltd
Keywords:
Bolted connections, Connections, Numerical modelling, Stainless steel, Stainless steel joints, T-stub, Tension resistance
Identifiers
Local EPrints ID: 468769
URI: http://eprints.soton.ac.uk/id/eprint/468769
ISSN: 0263-8231
PURE UUID: 567212f5-cf9c-4646-8ef9-316a4a014023
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Date deposited: 25 Aug 2022 16:52
Last modified: 17 Mar 2024 03:56
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Contributors
Author:
Orhan Yapici
Author:
Marios Theofanous
Author:
Huanxin Yuan
Author:
Samir Dirar
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