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Annan, R. (author), Bechtold, M. (author), Friedrich, H. (author), Maljaars, J. (author), Misiek, T. (author), Paschen, M. (author)As part of the ongoing revision of EN 1993-1-11 “Design of structures with tension components”, the current fatigue design rules have been subjected to a critical review. This has resulted in modifications and amendments, including the adjustment of several parameters. This paper provides an introduction to as well as background information on...article 2019
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Maljaars, J. (author), Leonetti, D. (author), Maas, C. (author)Many existing steel bridges are constructed by using hot-driven steel rivets as fasteners. It is known that the fatigue strength of these joints depends on their geometry, since it affects the load transfer mechanism and, therefore, the severity of the stress concentration. Attempts have been taken in the past to provide the characteristic...article 2019
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Dekker, R. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluys, L.J. (author)Structures are subjected to cyclic loads that can vary in direction and magnitude, causing constant amplitude mode I simulations to be too simplistic. This study presents a new approach for fatigue crack propagation in ductile materials that can capture mixed-mode loading and overloading. The extended finite element method is used to deal with...article 2019
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Molema, H. (author), van Erk, M. (author), van Winkelhof, M. (author), van 't Land, K. (author), Kiefte-de Jong, J. (author), van Ommen, B. (author), Pijl, H. (author), Cahn, W. (author), Deenik, J. (author), Maljaars, J. (author), van der Boog, P. (author), van Laarhoven, K. (author), de Reuver, P. (author), van Rossum, L. (author), Hoenders, R. (author), van Schaardenburg, D. (author), Wopereis, S. (author), Bonten, T. (author), Vos, R. (author), Navis, G. (author), Olde Rikkert, M. (author), Kraaijenhagen, R. (author), Preller, L. (author), Stronks, K. (author)Dat leefstijl van groot belang is om gezond te zijn en te blijven, weten de meeste Nederlanders wel. Maar dat leefstijlinterventies effectief ingezet kunnen worden voor herstel of behandeling van ziekten is minder bekend. Daarom richten wij ons bij het Nederlands Innovatiecentrum voor Leefstijlgeneeskunde juist daarop, dat doen we onder de naam...book 2019
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Hofmeyer, H. (author), Vervoort, E.M.C. (author), Snijder, H.H. (author), Maljaars, J. (author)An existing theoretical model indicates that the behaviour of trapezoidal steel sheeting under combined web crippling and bending moment may be modelled by only the sheeting's compressed flange. Therefore, this paper presents finite element models that simulate only the compressed flange of the sheeting, applying a prescribed displacement field...conference paper 2018
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Maljaars, J. (author)Viele der existierenden europischen Eisenbahn- und Autobahnbrkken erreichen ihre Nennlebensdauer ftir Stahlermdung, obwohl eine langere Nutzungsdauer angestrebt wird. Eine Meiglichkeit, die Nutzungsdauer gefahrlos zu verlkigern, besteht darin, die Brcken in krzeren Abstkiden auf Ermdungsrisse zu prfen oder zu uberwachen und eventuelle Risse zu...conference paper 2018
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Maljaars, J. (author), Bonet, E. (author), Pijpers, P.J.M. (author)Steel orthotropic decks in bridges and ferries have shown to be prone to fatigue cracking. A typical fatigue crack observed in these structures initiates at the root of the weld between the deck plate and stringer and grows into the deck plate. Due to limited fatigue test data available and the deviating characteristics of this type of crack as...article 2018
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Hashemi, S.B. (author), Maljaars, J. (author), Snijder, H.H. (author)In the Eurocode system, for fatigue design of bridges, the recommended partial factor for fatigue traffic loads is set to 1. In this paper, the adequacy of this approach is investigated by performing a reliability analysis on two types of welded joint in a main girder of a steel motorway bridge. For this purpose, a weigh in motion measurement...bookPart 2018
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Dragt, R.C. (author), Hengeveld, S.T. (author), Maljaars, J. (author)Measurements at Offshore Wind Turbine (OWT) substructures show that typical loading patterns include overloads, underloads, and shifts in mean stress cycles, due to the everchanging wind direction. These events follow each other in time and are further expressed as load sequences. Load sequences may affect the fatigue life. A novel model...conference paper 2018
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van Es, S. (author), Slot, H. (author), Steenbergen, H. (author), Maljaars, J. (author), Pijpers, R. (author)In Memoriam of Prof. Dr. Bernt Johansson. The use of high-strength steels (HSS, 460 < fy ≤ 700 MPa) and particularly very high-strength steels (VHSS, fy > 700 MPa) is limited in steel structures in civil and offshore engineering. This is due to a lack of experience in structures made of these materials and a lack of understanding of the...article 2018
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Leonetti, D. (author), Maljaars, J. (author), Snijder, H.H.B. (author)Estimating and reducing uncertaintyin fatigue test data analysis is a relevant task in order to assess the reliability of a structural connection with respect to fatigue. Several statistical models have been proposed in the literature with the aim of representing the stress range vs. endurance trend of fatigue test data under constant amplitude...conference paper 2018
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Rikken, M. (author), Pijpers, R.J.M. (author), Slot, H.M. (author), Maljaars, J. (author)This study examines residual stresses in bead-on-plate welded specimens in transverse direction over the thickness of the plate, using a combination of experimental and numerical procedures. Dilatometer and tensile tests were used to determine the phase transition temperatures with associated volumetric strains and the stressstrain relationships...article 2018
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Leonetti, D. (author), Maljaars, J. (author), Snijder, H.H.B. (author)Standards and guidelines for the fatigue design of riveted connections make use of a stress range-endurance (S-N) curve based on the net section stress range regardless of the number and the position of the rivets. Almost all tests on which S-N curves arebased, are performed with a minimum number of rivets. However, the number of rivets in a row...conference paper 2018
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Leonetti, D. (author), Hashemi, B. (author), Allaix, D.L. (author), Maljaars, J. (author)This paper investigates the differences in the predicted fatigue life of transverse butt weld joints and cover-plated beams considering statistically based fitting methods on fatigue test data and comparing the results with the S-N relation proposed in international standards. The test data fitting are performed by employing the Least Square...conference paper 2017
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Voormeeren, L.O. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluys, L.J. (author)The last decade has seen a growing interest in cohesive zone models for fatigue applications. These cohesive zone models often suffer from a lack of generality and applying them typically requires calibrating a large number of model-specific parameters. To improve on these issues a new method has been proposed in this paper based on the Thick...article 2017
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Dragt, R.C. (author), Allaix, D.L. (author), Maljaars, J. (author), Tuitman, J.T. (author), Salman, Y. (author), Otheguy, M.E. (author)Fatigue is one of the main design drivers for offshore wind substructures. Using Fracture Mechanics methods, load sequence effects such as crack growth retardation due to large load peaks can be included in the fatigue damage estimation. Due to the sequence dependency, a method is required that represents the sequences of loads in the design or...conference paper 2017
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Kosgodagan-Dalla Torre, A. (author), Yeung, T.G. (author), Morales-Nápoles, O. (author), Castanier, B. (author), Maljaars, J. (author), Courage, W. (author)Modeling the stochastic evolution of a large-scale fleet or network generally proves to be challenging. This difficulty may be compounded through complex relationships between various assets in the network. Although a great number of probabilistic graph-based models (e.g., Bayesian networks) have been developed recently to describe the behavior...article 2017
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Bleijenberg, A.N. (author), Maljaars, J. (author), Polder, R.B. (author), Steenbergen, R.D.J.M. (author), Vervuurt, A.H.J.M. (author)In theorie naderen veel bruggen en viaducten hun einde levensduur, maar de soep wordt niet zo heet gegeten als zij wordt opge-diend. Veel kunstwerken bezitten verborgen krachten. Toch is het nodig alle over-spanningen goed in kaart te brengen en kennis over dit onderwerp met elkaar te delen en/of op te bouwenarticle 2017
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Leonetti, D. (author), Maljaars, J. (author), Snijder, H.H.B. (author)In design against fatigue, a lower bound stress range vs. endurance curve (S-N curve) is employed to characterize fatigue resistance of plain material and structural details. With respect to the inherent variability of the fatigue life, the S-N curve is related to a certain probability of exceedance, a percentile of the fatigue life. This paper...article 2017
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Dekker, R.W.A. (author), Snijder, H.H. (author), Maljaars, J. (author)Clause 6.2 of EN 1993-1-1 covers the cross-sectional resistance of steel sections. The bending-shear interaction design rules for I-shaped cross-sections make use of a reduced yield stress for the web area. On this basis, a reduced design plastic resistance moment allowing for the shear force is presented. The effect of shear on the bending...conference paper 2017