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- Li, K. (author), Stroeven, M. (author), Stroeven, P. (author), Sluys, L.J. (author) conference paper 2013
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Karamnejad, A. (author), Sluys, L.J. (author)Macroscopic behavior of quasi-brittle materials is determined by their heterogeneous microstructure. Initiation and propagation of cracks are controlled by the randomness of the material and occur at different length scales (figure 1). Multi-scale approaches provide methodologies to obtain the mechanical behavior of a heterogeneous material from...conference paper 2013
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Ahmed, A. (author), Sluys, L.J. (author)Numerical analysis of progressive damage in fiber-reinforced laminated composite plates is a challenge due to the presence of different, complex failure mechanisms and their mutual interaction. A meso-scopic progressive failure model is presented to simulate interacting damage mechanisms (matrix cracking and delamination) in laminated composite...conference paper 2013
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- Li, K. (author), Stroeven, M. (author), Stroeven, P. (author), Sluys, L.J. (author) conference paper 2013
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- Sillem, A. (author), Simone, A. (author), Sluys, L.J. (author) conference paper 2013
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Fan, J. (author), Weerheijm, J. (author), Sluys, L.J. (author)Some polymers are not only transparent and lightweight, but also impact and ballistic resistant. Designing and preparing such polymeric materials with a high impact?resistant performance is of importance to e.g. aviation, military and windscreen applications.conference paper 2013
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Magalhaes Pereira, L.F. (author), Weerheijm, J. (author), Sluys, L.J. (author)Advanced Finite Element codes provide the possibility to simulate high rate loading on concrete targets as ballistic impact and explosions. Although damage to RC structures due to these loadings can be simulated and detailed results can be obtained the predictions are still far from perfect. It is well known that the results strongly depend on...conference paper 2013
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Lloberas Valls, O. (author), Everdij, F.P.X. (author), Rixen, D.J. (author), Simone, A. (author), Sluys, L.J. (author)The multiscale framework presented in [1, 2] is assessed in this contribution for a study of random heterogeneous materials. Results are compared to direct numerical simulations (DNS) and the sensitivity to user-defined parameters such as the domain decomposition type and initial coarse scale resolution is reported. The parallel performance of...conference paper 2013
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- Ahmed, A. (author), Sluys, L.J. (author) conference paper 2013
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Al-Khoury, R.I.N. (author), Talebian, M. (author), Sluys, L.J. (author)In this contribution, a finite element model for simulating coupled hydromechanic and electrokinetic flow in a multiphase domain is outlined. The model describes CO2 flow in a deformed, unsaturated geological formation and its associated streaming potential flow. The governing field equations are derived based on the averaging theory and solved...conference paper 2013
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Graca-e-Costa, R. (author), Alfaiate, J. (author), Dias-da-Costa, D. (author), Sluys, L.J. (author)Modelling fracture in concrete or masonry is known to be problematic regarding the robustness of iterative solution procedures and, the use of non-iterative methods (or that minimize the use of iterations) in quasi-brittle materials is now under strong development, due to the necessity to obtain effective results in finite element analysis [1, 2...conference paper 2013
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Mercatoris, B.C.N. (author), Massart, T.J. (author), Sluys, L.J. (author)This contribution discusses a coupled two-scale framework for hydro-mechanical problems in saturated heterogeneous porous geomaterials. The heterogeneous nature of such materials can lead to an anisotropy of the hydro-mechanical couplings and non-linear effects. Based on an assumed model of the mesostructure, the average macroscopic hydro...conference paper 2013
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Vandoren, B. (author), De Proft, K. (author), Simone, A. (author), Sluys, L.J. (author)A mesoscopic masonry model is presented using the partition of unity finite element method. Joints are only explicitly introduced when a critical stress state is exceeded, resulting in a computationally more efficient procedure when compared to models in which all joints are a priori active. The performance of the presented model is demonstrated...conference paper 2013
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Karamnejad, A. (author), Nguyen, V.P. (author), Sluys, L.J. (author)A multi-scale numerical approach for modeling cracking in heterogeneous quasi-brittle materials under dynamic loading is presented. In the model, a discontinuous crack model is used at macro-scale to simulate fracture and a gradient-enhanced damage model has been used at meso-scale to simulate diffuse damage. The traction-separation law for the...conference paper 2013
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Lloberas Valls, O. (author), Everdij, F.P.X. (author), Rixen, D.J. (author), Simone, A. (author), Sluys, L.J. (author)Concurrent multiscale analysis of quasi-brittle heterogeneous materials such as concrete and rock is conducted employing non-overlapping domain decomposition techniques. Initially a coarse discretization with effective properties is considered at each domain. A zoom-in technique is performed at those domains in which non-linearities take place....conference paper 2012
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Dias-da-Costa, D. (author), Alfaiate, J. (author), Sluys, L.J. (author), Areias, P. (author), Fernandes, C. (author), Julio, E. (author)The possibility of embedding strong discontinuities into finite elements allowed the simulation of different problems, namely, brickwork masonry fracture, dynamic fracture, failure in finite strain problems and simulation of reinforcement concrete members. However, despite the significant contributions to this field, a general embedded...conference paper 2012
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- Ahmed, A. (author), Sluys, L.J. (author) conference paper 2012
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- Karamnejad, A. (author), Sluys, L.J. (author), Nguyen, V.P. (author) conference paper 2012
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Ahmed, A. (author), Sluys, L.J. (author)A finite element model based on solid-like shell elements is presented for the simulation of progressive damage in laminated composite structures. To model mesh independent matrix cracking, a discontinuous solid-like shell element (DSLS) is utilized. The shell element has only displacement degrees of freedom, thus avoids the need for a...conference paper 2012
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- Talebian, M. (author), Al-Khoury, R.I.N. (author), Sluys, L.J. (author) conference paper 2012