RESEARCH ARTICLE
Finite Element Analysis of Bolted T-Stubs Undergoing Large Displacement: A Preliminary Study
Anna C. Faralli1, *, P.J. Tan1, Massimo Latour2, Gianvittorio Rizzano2
Article Information
Identifiers and Pagination:
Year: 2018Volume: 12
Issue: Suppl-1, M10
First Page: 170
Last Page: 176
Publisher ID: TOBCTJ-12-170
DOI: 10.2174/1874836801812010170
Article History:
Received Date: 1/10/2017Revision Received Date: 1/11/2017
Acceptance Date: 1/12/2017
Electronic publication date: 23/05/2018
Collection year: 2018
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Background:
In recent years, there have been increased interests by the steel structures community to characterise the large-deformation response of T-stubs to evaluate the deformation capacity of bolted joints. However, little information exists on the influence of second-order effects on the response of bolted T-stubs and, consequently, there are no existing guidelines on how to include these effects in de-sign.
Objective:
In this paper, we assess the influence of second-order effects in T-stubs bolted to a rigid support through a parametric investigation, using finite element analysis.
Methods:
Both material and geometrical non-linearities were considered since they are known to have a critical impact upon the performance of T-stubs. A benchmark model is first generated and validated and then used to carry out a parametric investigation. A method to assess the contributions of membrane forces to the overall deformation response of a T-stub is also proposed based on the introduction of a non-dimensional parameter Ψ.
Results:
The combination of geometric parameters that are most affected by second order effects, induced by large displacement, was identified. A direct correspondence was found between the extent of second order effects that has developed and the index Ψ: a higher index implies a greater influence by second order effects.
