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Verdenius, S.A. (author), Hengeveld, S.T. (author), Maljaars, J. (author)Train axle load measurements performed between 2012 and 2019 at 87 locations in the Dutch railway network are used to evaluate fatigue of railway bridges. The theoretical fatigue damage using realistic influence lines is determined for the measured loads and for the load model from Eurocode EN 1991-2 Annex D. It appears that this load model is ...article 2023
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Rodenburg, J.D. (author), Maljaars, J. (author), Hengeveld, S.T. (author), Vervuurt, A.H.J.M. (author)The fatigue life of orthotropic steel bridge decks in road bridges depends on the load effects exerted by heavy lorries. The contact surface of tyres is one of the important variables. Measurements described in the literature demonstrate that the actual tyre contact surfaces of today's traffic representative for Europe are shorter and slightly...article 2023
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Xu, Q. (author), Hofmeyer, H. (author), Maljaars, J. (author), van Herpen, R.A.P. (author)This paper presents two full-scale fire resistance tests of sandwich panels with connections, to verify one way coupled fire-structure simulations. The heat transfer simulations agree well with the tests, however, the structural response simulations show some differences compared to the start of the first test, which is a sandwich panel façade....conference paper 2022
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Maljaars, J. (author), Leonetti, D. (author), Hashemi, B. (author), Snijder, H.H.B. (author)This paper presents a probabilistic framework to derive the safety factors for fatigue of steel and composite steel concrete road bridges. Engineering models are used for the design and the safety factor is derived in such a way that the design meets the target reliability set by international Eurocode and ISO standards, estimated using measured...article 2022
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Snijder, H.H. (author), Knipping, J.B.N. (author), Maljaars, J. (author), Teeuwen, P.A. (author)Capacity design for bolted connections in tension means that yielding of the gross cross-section is decisive over the ultimate resistance of the net cross-section. If the requirement for capacity design is met, ductile connection behavior is achieved, and brittle failure is avoided. However, in many practical cases the bolt holes are too large...article 2022
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Xu, Q. (author), Hofmeyer, H. (author), Maljaars, J. (author), van Herpen, R.A.P. (author)A sandwich panel, as a very important component in building façade systems, consists of two thin walled plates plus an insulation core. For this core, traditionally materials like mineral wool have been used. However, polymer composites are increasingly used instead, for among others their higher stiffness, and better resistance to wind and...conference paper 2022
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- Xu, Q. (author), Hofmeyer, H. (author), Maljaars, J. (author), van Herpen, R.A.P. (author) conference paper 2022
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Maljaars, J. (author), Rozsas, A. (author), Walters, C.L. (author), Slot, H.M. (author)The failure assessment line (FAL) describes the interaction between plastic failure and fracture of flawed steel components subjected to tension or bending. This paper quantifies the model uncertainty of the FAL as provided in the internationally used British Standard BS 7910:2019 by comparing the assessment with the actual failure load of 82...article 2022
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Dekker, R. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluys, L.J. (author)A numerical model for corrosion pit propagation under mechanical loading is presented. The level set method is used for corrosion front tracking and also enables the domain to be split into a solid and a pit domain. In the pit the diffusion of atoms originating from the dissolution process occurring at the pit front is simulated. The model is...article 2021
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- Tjepkema, D. (author), Hornby, R. (author), Maljaars, J. (author) public lecture 2021
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- Dekker, R. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluys, L.J. (author) article 2021
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Xu, Q. (author), Hofmeyer, H. (author), Maljaars, J. (author)A two-scale finite element model is proposed to improve two-way coupled fire-structure simulations. The model consists of (i) a global-scale model, which accounts for the structure, and (ii) a small-scale model for each connection. Structural parts on the global scale are connected by spring elements, which stiffness properties are updated by...conference paper 2021
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Maljaars, J. (author), Misiek, T. (author)Many steel rope systems are subjected to fluctuating tensile loads and therefore can fail due to fatigue. Available fatigue test data indicate that rope diameter, mean stress, socket type, lay angle and rope length influence the fatigue resistance. Most of the tests were terminated before full failure of the ropes. This paper shows that the test...article 2021
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- Snijder, H.H. (author), Ploegmakers, D. (author), Dekker, R. (author), Maljaars, J. (author) article 2021
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- Hengeveld, S.T. (author), Vervuurt, A.H.J.M. (author), Maljaars, J. (author) conference paper 2021
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- Maljaars, J. (author), Misiek, T. (author) article 2021
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Dekker, R. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluys, L.J. (author)This study presents calibration and validation of a cohesive extended finite element model for fatigue crack propagation in ductile materials. The approach relies on a separation between plasticity around the crack tip and fatigue crack growth at the crack tip such that the influence of plasticity on fatigue driving forces is predicted. This...article 2021
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Maljaars, J. (author), Euler, M. (author)Bolts and bolted connections are frequently used in civil engineering steel structures. This paper presents a meta study where a few thousand fatigue tests on these elements are evaluated. The evaluation reveals that current specifications in design standards need updating to account for the relevant stress parameter and production methods. This...article 2021
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Luijters, I. (author), Maljaars, J. (author), Wijte, S. (author)The effect of embedding in concrete on the fatigue performance of steel reinforcement bars is not evident. Some test series provided in literature demonstrate a higher fatigue resistance of embedded bars as compared to bars in air, whereas others provide a lower resistance. In addition, debate exists on the mechanisms behind the difference...article 2021
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Cornelissen, R. (author), Maljaars, J. (author), Hofmeyer, H. (author)Curved aluminium extrusions are applied in a wide range of industrial applications. Because extrusions are initially straight, an additional process is required to curve the product. Undesired wrinkling of the plate part at the inner radius is frequently observed during the curving process. Wrinkling has already been extensively studied for the...article 2021