Slip factors for slip-resistant connections made of stainless steel

Stranghöner, Natalie; Afzali, Nariman; Vries, Peter de; Schedin, Erik; Pilhagen, Johan

doi:10.1016/j.jcsr.2018.07.005

Cited by 25 publications

(11 citation statements)

References 4 publications

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“…The friction coefficient was taken as 0.2 for the two contact pairs including the steel block and the flange, the steel block and the bolt nut, while the friction coefficient of the other contact pair the flange and the bolt nut was set equal to 0.15 [43]. It has been noted that the effect of the friction coefficients turns out to be insignificant for stainless steel bolted T-stubs in tension based on a sensitivity analysis as the deformations of the model do not induce significant tangential contact.…”

Section: Mode 3 T-s and T-mentioning

confidence: 99%

Initial stiffness and plastic resistance of bolted stainless steel T-stubs in tension

Yuan

Gao

Theofanous

et al. 2020

Journal of Constructional Steel Research

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Section: Mode 3 T-s and T-mentioning

confidence: 99%

Initial stiffness and plastic resistance of bolted stainless steel T-stubs in tension

Yuan

Gao

Theofanous

et al. 2020

Journal of Constructional Steel Research

View full text Add to dashboard Cite

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“…However, during the test the pre-tension loads on the bolts reduce mainly due to the lateral contraction of the inner plate [21]. Therefore, in this study, the actual slipfactor [1,12,13] for the each of the faying surfaces are established (Eq.5) based on the bolt pre-tension loads at the pre-defined slip instant of EN1090 -2 Annex G.…”

Section: Resultsmentioning

confidence: 99%

Determination of Slip‐factor Between Friction Shims and Shot‐blasted Steel Surfaces

Yolacan

Schäfer

2023

ce papers

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This paper presents the results of an experimental testing campaign performed to determine slip‐factor between the faying surfaces of shot‐blasted steel plates and state‐of‐the‐art friction shims. In total five experimental tests were performed as consistent with the provisions of EN1090‐2 Annex G to determine the slip‐factor between the faying surfaces. The results of the experimental test campaign showed that the surface roughness of the steel plates needs to be suitable for the selected type of the friction shims to enrich the slip‐resistance of the bolted‐connections. The test procedure was simulated with a commercial finite‐element analysis software, Abaqus, to compare the empirically determined slip‐factor and the penalty friction formulation of the software. It is shown that the slip‐factor definition of EN1090 – 2 Annex G fits in a very good agreement to the penalty friction formulation of the software to estimate the slip‐resistance of the bolted connections. The differences between the test results and the outputs of the finite element analysis are discussed in detail with a novel representation of non‐linear stick‐slip transition path for the slip‐resistant bolted connections. A further parametric study was performed to understand the impact of the geometric parameters on the slip‐resistance and the load‐slip behaviour of the faying surfaces.

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“…Finally, there is a gap of knowledge regarding in-field installation techniques for stainless steel fasteners for slip-critical connections. It is known that preload losses are due to parameters such as plastic deformation of the clamped surfaces, creep deformation, and stress relaxation (Stranghöner et al, 2019). et al (2017).…”

Section: Stainless Steel Fastener Relaxation Literature Reviewmentioning

confidence: 99%

Experimental Study On The Slip Resistance, Bolt Relaxation And Fatigue Behaviour Of ASTM A1010 Stainless Steel For Bridge Applications

Ndreko¹

2021

Preprint

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<div>Unpainted weathering steel has been used extensively in Canada for bridge construction primarily to reduce the maintenance requirements and increase durability in comparison to regular structural steel. However, weathering steel has not performed well in bridges where chlorides from de-icing salts get onto the steel and prevent the development of a proper protective patina on its surface.</div><div>An alternative solution to this problem is the use of ASTM A1010 stainless steel with a chemical composition that enhances corrosion resistance compared to the standard weathering steel. Most bridge splice connections are made up of gusset plates and high strength bolts (namely; A325 and A490) and are designed using the slip-critical method. The Canadian Highway Bridge Design Code (CSA S6-14) specifies an equation for the calculations of slip resistance of bolted joints using either the A325 or A490 high strength bolts with regular structural steel, at varying surface conditions. However, this equation is not applicable to stainless steel ASTM A1010 due to lack of research data. In addition, the fatigue category of A1010 steel is as of yet unavailable. Therefore, this research seeks to determine: (i) the slip resistance coefficient of slip-critical joints made of</div><div>A1010 steel plates; (ii) bolt relaxation of three bolt types, namely: A325 plain, A325 galvanized, A193 B8 stainless steel; and (iii) fatigue behaviour of A1010 stainless steel plates. Identical specimens made of Canadian structural steel plates (CSA G40.21 350W grade) were fabricated</div><div>and tested to represent the baseline performance for A1010 stainless steel. The experimental findings led to recommendations for design of slip-critical connections and further research on different fatigue detail categories.</div>

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Slip factors for slip-resistant connections made of stainless steel

Cited by 25 publications

References 4 publications

Initial stiffness and plastic resistance of bolted stainless steel T-stubs in tension

Initial stiffness and plastic resistance of bolted stainless steel T-stubs in tension

Determination of Slip‐factor Between Friction Shims and Shot‐blasted Steel Surfaces

Experimental Study On The Slip Resistance, Bolt Relaxation And Fatigue Behaviour Of ASTM A1010 Stainless Steel For Bridge Applications

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