PSI - Issue 22

Available online at www.sciencedirect.com

Available online at www.sciencedirect.com Available online at www.sciencedirect.com

ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Structural Integrity Procedia 00 (2018) 000–000 Procedia Structural Integrity 22 (2019) 376–385

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www.elsevier.com / locate / procedia

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 10.1016/j.prostr.2020.01.047 ∗ Corresponding author. Tel.: + 351-966-559-442. E-mail address: jacorreia@inegi.up.pt 2210-7843 c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers. Most engineering structures are subject to variable load cycles during their lifetime. Thus, the structural compo nents of these structures can accumulate fatigue damage and consequently a ff ect the performance of the structure. Several design code standards, such as the Eurocode 3 EN1993-1-9 (2014), AREMA (2006), AASHTO LRFD (1995) and BS 5400 (1980), have presented methodologies to estimate the lifetime of structural details based on fatigue damage accumulation. Fatigue analyses of steel structures are based on S-N curves combined with the linear damage accumulation rule proposed by Miner (1945), also known as the Palmgren-Miner rule. In the EN1993-1-9 standard, ∗ Corresponding author. Tel.: + 351-966-559-442. E-mail address: jacorreia@inegi.up.pt 2210-7843 c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers. © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers Abstract Engineering structures, such as bridges, pressure vessels, machines, etc., are subject to variable load cycles during their lifetime that can cause fatigue damage. Fatigue design of steel structures is based on double S-N curves and the estimation of fatigue damage caused by load cycles. This estimation is calculated by cycle counting methods combined with the Palmgren-Miner rule. The presented software, Fatigue Damage Tool (FDT), is based on the design assumptions of the Eurocode 3 EN1993-1-9 standard. The cycle counting method implemented in FDT is the rainflow counting algorithm according to the ASTM E1049-85 standard, and it uses the Palmgren-Miner rule to calculate de fatigue damage for a critical detail. In this paper, the software is applied to estimate the fatigue damage accumulation for a critical detail at the mid-span of the Va´rzeas railway bridge. Additionally, FDT can also be applied to several other types of engineering structures. c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the First International Symposium on Risk a d Safety of Complex Structures and Components organizers. Keywords: Risk analysis; Safety criteria; Structural integrity; Fatigue; Fracture mechanics; Complex structures; Structural components; Cycle counting. a FEUP - Faculty of Engineering of the University of Porto, Rua Dr. Roberto Frias, Campus FEUP, 4200-465 Porto, Portugal b CONSTRUCT - LESE, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Campus FEUP, 4200-465 Porto, Portugal c INEGI - LAETA, University of Porto, Rua Dr. Roberto Frias, Campus FEUP, 4200-465 Porto, Portugal Abstract Engineering structures, such as bridges, pressure vessels, machines, etc., are subject to variable load cycles during their lifetime that can cause fatigue damage. Fatigue design of steel structures is based on double S-N curves and the estimation of fatigue damage caused by load cycles. This estimation is calculated by cycle counting methods combined with the Palmgren-Miner rule. The presented software, Fatigue Damage Tool (FDT), is based on the design assumptions of the Eurocode 3 EN1993-1-9 standard. The cycle counting method implemented in FDT is the rainflow counting algorithm according to the ASTM E1049-85 standard, and it uses the Palmgren-Miner rule to calculate de fatigue damage for a critical detail. In this paper, the software is applied to estimate the fatigue damage accumulation for a critical detail at the mid-span of the Va´rzeas railway bridge. Additionally, FDT can also be applied to several other types of engineering structures. c 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers. Keywords: Risk analysis; Safety criteria; Structural integrity; Fatigue; Fracture mechanics; Complex structures; Structural components; Cycle counting. First International Symposium on Risk and Safety of Complex Structures and Components Fatigue Damage Tool (FDT) - A tool for fatigue damage assessment according to design codes Carlos D.S. Souto a , Jose´ A.F.O. Correia b,c, ∗ , Ab´ılio M.P. De Jesus b,c , Rui A.B. Calc¸ada b a FEUP - Faculty of Engineering of the University of Porto, Rua Dr. Roberto Frias, Campus FEUP, 4200-465 Porto, Portugal b CONSTRUCT - LESE, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Campus FEUP, 4200-465 Porto, Portugal c INEGI - LAETA, University of Porto, Rua Dr. Roberto Frias, Campus FEUP, 4200-465 Porto, Portugal First International Symposium on Risk and Safety of Complex Structures and Components Fatigue Damage Tool (FDT) - A tool for fatigue damage assessment according to design codes Carlos D.S. Souto a , Jose´ A.F.O. Correia b,c, ∗ , Ab´ılio M.P. De Jesus b,c , Rui A.B. Calc¸ada b 1. Introduction 1. Introduction Most engineering structures are subject to variable load cycles during their lifetime. Thus, the structural compo nents of these structures can accumulate fatigue damage and consequently a ff ect the performance of the structure. Several design code standards, such as the Eurocode 3 EN1993-1-9 (2014), AREMA (2006), AASHTO LRFD (1995) and BS 5400 (1980), have presented methodologies to estimate the lifetime of structural details based on fatigue damage accumulation. Fatigue analyses of steel structures are based on S-N curves combined with the linear damage accumulation rule proposed by Miner (1945), also known as the Palmgren-Miner rule. In the EN1993-1-9 standard,