University of Hertfordshire

Numerical determination of plastic collapse loads for sections under concentrated transverse forces

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Standard

Numerical determination of plastic collapse loads for sections under concentrated transverse forces. / dos Santos, Gabriel; Gardner, Leroy; Kucukler, Merih.

ce/papers: Special Issue: Proceedings of Eurosteel 2017. Vol. 1 1. ed. Copenhagen, Denmark : Wiley, 2017. p. 1533-1542 07.06.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harvard

dos Santos, G, Gardner, L & Kucukler, M 2017, Numerical determination of plastic collapse loads for sections under concentrated transverse forces. in ce/papers: Special Issue: Proceedings of Eurosteel 2017. 1 edn, vol. 1, 07.06, Wiley, Copenhagen, Denmark, pp. 1533-1542, The 8th European Conference on Steel and Composite Structures, Copenhagen, Denmark, 13/09/17. https://doi.org/10.1002/cepa.196

APA

dos Santos, G., Gardner, L., & Kucukler, M. (2017). Numerical determination of plastic collapse loads for sections under concentrated transverse forces. In ce/papers: Special Issue: Proceedings of Eurosteel 2017 (1 ed., Vol. 1, pp. 1533-1542). [07.06] Copenhagen, Denmark: Wiley. https://doi.org/10.1002/cepa.196

Vancouver

dos Santos G, Gardner L, Kucukler M. Numerical determination of plastic collapse loads for sections under concentrated transverse forces. In ce/papers: Special Issue: Proceedings of Eurosteel 2017. 1 ed. Vol. 1. Copenhagen, Denmark: Wiley. 2017. p. 1533-1542. 07.06 https://doi.org/10.1002/cepa.196

Author

dos Santos, Gabriel ; Gardner, Leroy ; Kucukler, Merih. / Numerical determination of plastic collapse loads for sections under concentrated transverse forces. ce/papers: Special Issue: Proceedings of Eurosteel 2017. Vol. 1 1. ed. Copenhagen, Denmark : Wiley, 2017. pp. 1533-1542

Bibtex

@inproceedings{28205d7c7e93463aa7cc0bec1310f290,
title = "Numerical determination of plastic collapse loads for sections under concentrated transverse forces",
abstract = "Structural steel design codes generally use design methods requiring the determination of two key reference loads: (i) the plastic collapse load and (ii) the elastic buckling load. Using these two key reference loads, the element slenderness can be determined and member resistances can be obtained through buckling curves. Both of these reference loads can be estimated either through simplified analytical expressions or numerical analysis. In the cases of uniform loading, regular geometry and straightforward boundary conditions, the former approach is well suited, while for problems leading to complex non‐uniform stress distributions, such as members under concentrated transverse loading, numerical solutions are often necessary.Using numerical methods, the plastic collapse loads can be obtained through Materially Nonlinear Analyses (MNA). However, since the development of a plastic collapse mechanism brings about large localised strains and extensive plasticity, a MNA can abort prematurely due to its failure to satisfy the necessary convergence criteria or the obtained load‐deformation path can flatten out only after unrealistically large deformations, resulting in misleading predictions of the plastic collapse loads. In this paper, an extrapolation technique is recommended for the determination of plastic collapse loads from MNA for plate elements and cold‐formed sections under concentrated transverse loading. The proposed procedure is based on the Modified Southwell (MS) Plot, originally proposed for the identification of critical loads.",
author = "{dos Santos}, Gabriel and Leroy Gardner and Merih Kucukler",
year = "2017",
month = "9",
day = "13",
doi = "10.1002/cepa.196",
language = "English",
volume = "1",
pages = "1533--1542",
booktitle = "ce/papers",
publisher = "Wiley",
edition = "1",

}

RIS

TY - GEN

T1 - Numerical determination of plastic collapse loads for sections under concentrated transverse forces

AU - dos Santos, Gabriel

AU - Gardner, Leroy

AU - Kucukler, Merih

PY - 2017/9/13

Y1 - 2017/9/13

N2 - Structural steel design codes generally use design methods requiring the determination of two key reference loads: (i) the plastic collapse load and (ii) the elastic buckling load. Using these two key reference loads, the element slenderness can be determined and member resistances can be obtained through buckling curves. Both of these reference loads can be estimated either through simplified analytical expressions or numerical analysis. In the cases of uniform loading, regular geometry and straightforward boundary conditions, the former approach is well suited, while for problems leading to complex non‐uniform stress distributions, such as members under concentrated transverse loading, numerical solutions are often necessary.Using numerical methods, the plastic collapse loads can be obtained through Materially Nonlinear Analyses (MNA). However, since the development of a plastic collapse mechanism brings about large localised strains and extensive plasticity, a MNA can abort prematurely due to its failure to satisfy the necessary convergence criteria or the obtained load‐deformation path can flatten out only after unrealistically large deformations, resulting in misleading predictions of the plastic collapse loads. In this paper, an extrapolation technique is recommended for the determination of plastic collapse loads from MNA for plate elements and cold‐formed sections under concentrated transverse loading. The proposed procedure is based on the Modified Southwell (MS) Plot, originally proposed for the identification of critical loads.

AB - Structural steel design codes generally use design methods requiring the determination of two key reference loads: (i) the plastic collapse load and (ii) the elastic buckling load. Using these two key reference loads, the element slenderness can be determined and member resistances can be obtained through buckling curves. Both of these reference loads can be estimated either through simplified analytical expressions or numerical analysis. In the cases of uniform loading, regular geometry and straightforward boundary conditions, the former approach is well suited, while for problems leading to complex non‐uniform stress distributions, such as members under concentrated transverse loading, numerical solutions are often necessary.Using numerical methods, the plastic collapse loads can be obtained through Materially Nonlinear Analyses (MNA). However, since the development of a plastic collapse mechanism brings about large localised strains and extensive plasticity, a MNA can abort prematurely due to its failure to satisfy the necessary convergence criteria or the obtained load‐deformation path can flatten out only after unrealistically large deformations, resulting in misleading predictions of the plastic collapse loads. In this paper, an extrapolation technique is recommended for the determination of plastic collapse loads from MNA for plate elements and cold‐formed sections under concentrated transverse loading. The proposed procedure is based on the Modified Southwell (MS) Plot, originally proposed for the identification of critical loads.

U2 - 10.1002/cepa.196

DO - 10.1002/cepa.196

M3 - Conference contribution

VL - 1

SP - 1533

EP - 1542

BT - ce/papers

PB - Wiley

CY - Copenhagen, Denmark

ER -