Searched for: subject%3A%22multi%255C-scale%255C+modelling%22
(1 - 20 of 20)
document
Kukkola, Max (author)
Heterogeneous materials are vital for both the modern engineer and inquisitive scientist alike. They make up a vital material class that can either form inevitably as a result of material processing (such as crystallization in metals) or can be intentionally designed for to gain desirable properties (such as anisotropy in composites). As such,...
master thesis 2024
document
Bharath, Anirudh (author)
This work develops a stand-alone Finite Element-based Unit Cell for the modelling of Fibre Reinforced Composites, capable of capturing 3D stress states and geometrical imperfections at the micro-scale. The project considers different beam and 3D elements for this purpose and draws comparisons between them based on computational efficiency,...
master thesis 2022
document
Ferreira, Bernardo P. (author), Andrade Pires, F. M. (author), Bessa, M.A. (author)
This article introduces adaptivity in Clustering-based Reduced Order Models (ACROMs). The strategy is demonstrated for a particular CROM called Self-Consistent Clustering Analysis (SCA), extending it into the Adaptive Self-Consistent Clustering Analysis (ASCA) method. This is shown to improve predictions of Representative Volume Elements ...
journal article 2022
document
Nie, Ding (author), Shang, Feng (author), Han, Xun (author)
Concrete dams are subjected to soft water penetration of a high water head during their long service lives. Degradation due to calcium leaching will decrease the durability of the concrete and affect dam safety. The long-term performance of concrete dams due to calcium leaching should be evaluated and predicted accurately to complete the...
conference paper 2021
document
Qiu, Xiujiao (author), Chen, Jiayi (author), Ye, Guang (author), De Schutter, Geert (author)
ASR (alkali-silica reaction) is one of the toughest durability problems in engineering. However, the damage induced by ASR is still fairly unpredictable due to the lack of microstructural information of cement-based materials affected by ASR, while the microstructure determines the global performance. In order to fill this gap, a multiscale...
conference paper 2021
document
Wu, J. (author), Sigmund, Ole (author), Groen, Jeroen P. (author)
Multi-scale structures, as found in nature (e.g., bone and bamboo), hold the promise of achieving superior performance while being intrinsically lightweight, robust, and multi-functional. Recent years have seen a rapid development in topology optimization approaches for designing multi-scale structures, but the field actually dates back to...
review 2021
document
Qiu, Xiujiao (author), Chen, J. (author), Ye, G. (author), De Schutter, Geert (author)
ASR (alkali-silica reaction) is one of the toughest durability problems in engineering. However, the damage induced by ASR is still fairly unpredictable due to the lack of microstructural information of cement-based materials affected by ASR, while the microstructure determines the global performance. In order to fill this gap, a multiscale...
conference paper 2021
document
Liu, S. (author), Zhou, Yangxiao (author), Xie, Mingzhao (author), McClain, M.E. (author), Wang, Xu Sheng (author)
A coupled regional and local model is required when groundwater flow and solute transport are to be simulated in local areas of interest with a finer grid while regional aquifer boundary and major stresses should be retained with a coarser grid. The coupled model should also maintain interactions between the regional and local flow systems. In...
journal article 2021
document
Zhang, H. (author), Xu, Y. (author), Gan, Y. (author), Schlangen, E. (author), Šavija, B. (author)
This paper presents a validation process of the developed multi-scale modelling scheme on mortar composites. Special attention was paid to make the material structure of real and virtual mortar specimens comparable at the meso-scale. The input mechanical parameters of cement paste (both bulk cement paste and interfacial transition zone) at the...
journal article 2020
document
Zhang, H. (author)
Cementitious materials are heterogeneous on mutliple length scales, from nanometres to metres. Consequently, their macroscopic mechanical properties are affected by material structures at all length scales. In pursuit of fundamental understanding the relationship between their multiscale heterogeneous material structure and mechanical properties...
doctoral thesis 2019
document
Vallaeys, Valentin (author), Kärnä, Tuomas (author), Delandmeter, Philippe (author), Lambrechts, Jonathan (author), Baptista, António M. (author), Deleersnijder, E.L.C. (author), Hanert, Emmanuel (author)
The Columbia River (CR) estuary is characterized by high river discharge and strong tides that generate high velocity flows and sharp density gradients. Its dynamics strongly affects the coastal ocean circulation. Tidal straining in turn modulates the stratification in the estuary. Simulating the hydrodynamics of the CR estuary and plume...
journal article 2018
document
Hedayati, R. (author), Hosseini-Toudeshky, H. (author), Sadighi, M. (author), Mohammadi-Aghdam, M. (author), Zadpoor, A.A. (author)
Advances in additive manufacturing (AM) techniques have enabled fabrication of highly porous titanium implants that combine the excellent biocompatibility of bulk titanium with all the benefits that a regular volume-porous structure has to offer (e.g. lower stiffness values comparable to those of bone). Clinical application of such...
journal article 2018
document
Lukovic, M. (author), Schlangen, E. (author), Savija, B. (author), Ye, G. (author), Copuroglu, O. (author)
Simulation of mechanical behaviour of heterogeneous materials is only possible if the local properties of the components are known. In recent years nano-indentation is being applied on different levels to obtain local mechanical properties. The aim of this paper is to explore various ways to obtain these properties by combining nano-indentation...
conference paper 2015
document
Verbree, E. (author), De Vries, M.E. (author), Gorte, B.G.H. (author), Oude Elberink, S. (author), Karimiou, G. (author)
Water run-off modelling applied within urban areas requires an appropriate detailed surface model represented by a raster height grid. Accurate simulations at this scale level have to take into account small but important water barriers and flow channels given by the large-scale map definitions of buildings, street infrastructure, and other...
conference paper 2013
document
Qian, C. (author)
In this research, extensive fatigue tests were performed on single glass fibres and composite coupons. Comparison of the test results shows that there is a significant difference between the fibre and composite fatigue behaviour. In order to clarify this difference, a multi-scale micro-mechanical model was developed. This model predicts fatigue...
doctoral thesis 2013
document
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
document
Zhang, X. (author), Zhao, X. (author), Molenaar, M. (author), Stoter, J. (author), Kraak, M.J. (author), Ai, T. (author)
Matching of building polygons with different levels of detail is crucial in the maintenance and quality assessment of multi-representation databases. Two general problems need to be addressed in the matching process: (1) Which criteria are suitable? (2) How to effectively combine different criteria to make decisions? This paper mainly focuses on...
conference paper 2012
document
Terwisscha van Scheltinga, A. (author), Myers, P.G. (author), Pietrzak, J.D. (author)
A new mesh size field is presented that is specifically designed for efficient meshing of highly irregular oceanic domains: archipelagos. The new approach is based on the standard mesh size field that uses the proximity to the nearest coastline. Here, the proximities to the two nearest coastlines are used to calculate the distance between two...
journal article 2012
document
Anac, C. (author), Esposito, R. (author), Copuroglu, O. (author), Schlangen, H.E.J.G. (author), Hendriks, M.A.N. (author)
This paper outlines a project (namely PAT-ASR) which entails the development of a multi scale material performance assessment model on simulation of alkali silica reaction deployment and its effects on concrete durability. Performance models require a multi scale approach from micro (namely reaction chemistry) to macro level studies (namely...
conference paper 2012
document
Gitman, I.M. (author)
Several different approaches are available in order to describe material behaviour. Considering material on the higher (macro) level of observation constitutes the macroscopic approach. However, the key to understand a macro materials behaviour lies in its mesostructure. As such the mesoscopic approach can be used which is based on the detailed...
doctoral thesis 2006
Searched for: subject%3A%22multi%255C-scale%255C+modelling%22
(1 - 20 of 20)