Fatigue behaviour of bolted joints for rack structures

• Type: Article in International Conference Proceedings Book
• Date: 2020

Authors

da Silva, LFRC (Author) Other; Gomes, VMG (Author) Other; Abilio M P De Jesus (Author) FEUP; Miguel Figueiredo (Author) FEUP; Correia, JAFO (Author) FEUP; Lesiuk, G (Author) Other; Fernandes, AA (Author) Other

Conference proceedings International

Title: 1ST VIRTUAL EUROPEAN CONFERENCE ON FRACTURE - VECF1

Pages: 1426-1430

1st European-Structural-Integrity-Society (ESIS) Virtual European Conference on Fracture (ECF)

ELECTR NETWORK, JUN 29-JUL 01, 2020

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Other information

Authenticus ID: P-00T-33K

DOI: 10.1016/j.prostr.2020.10.115

Abstract (EN): Racking systems applied in logistics warehouses are built with thin steel sections that are joined by bolted connections. In fully automatic systems, these structures are loaded 7/7 days and 24/24 hours raising fatigue issues due to the cyclic nature of the resulting stresses. According to the current industrial practice, those bolted joints are tight with no torque control, leading to the concept of snug tight bolts, which behaves similarly to non-preloaded bolted joints. Eurocode 3 has no reference about fatigue rules of bolted connections between thin-walled cold formed steels. This paper aims at analyzing the fatigue behaviour of bolted (snug tight vs. preloaded) joints in order to provide fatigue design rules for possible update of Eurocode 3 existing rules. A significant fatigue testing program was performed to investigate the influence of different bolts arrangements, stress R-Ratios and bolt preloads, including snug tight, on fatigue life. The obtained results were analyzed under ASTM E739 procedure in order to obtain S-N curves. This work revealed an average fatigue strength of 114 MPa at 2E6 cycles for the snug tight bolted joints. Preloaded bolt joints presented an average fatigue strength of 108 MPa at 2E6 cycles. Discrepancies between S-N curves suggested by Eurocode 3 and fatigue data obtained experimentally were verified. (C) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5