Searched for: contributor:"Sluys, L.J. (promotor)"
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Fan, J. (author)
Recently, research on the impact resistance of transparent hybrid glass-polymer systems (layered and particle-matrix systems) has been conducted at the Netherlands Organisation for Applied Scientific Research (TNO), showing the potential of these materials for the application in protection concepts. A soft, transparent polyurethane elastomeric...
doctoral thesis 2015
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Le, L.B.N. (author)
Understanding the microstructure of cement paste is the basis of a study towards properties and behaviour of cementi¬tious materials. It is attractive exploit¬ing modern computer facilities for this purpose, favourably competing with time-consuming and laborious experimental approaches. This study aims at bringing mate¬rial studies into virtual...
doctoral thesis 2015
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Talebian, M. (author)
CO2 geo-sequestration (CGS) is considered to be a feasible technology for reducing the amount of CO2 emission into the atmosphere. Selection of an appropriate reservoir is vital and requires appropriate knowledge of the involved phenomena and processes. In a CO2 geo-sequestration process, carbon dioxide goes through mainly four storage (trapping...
doctoral thesis 2015
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Ahmed, A. (author)
In order to arrive at safe and reliable design of composite structures, understanding of the mechanisms and mechanics of damage growth in these materials is of paramount significance. Numerical models, if designed, implemented and used carefully, can be helpful not only to understand the mechanisms and mechanics of damage growth but also to...
doctoral thesis 2014
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Ølgaard, K.B. (author)
In engineering, physical phenomena are often described mathematically by partial differential equations (PDEs), and a commonly used method to solve these equations is the finite element method (FEM). Implementing a solver based on this method for a given PDE in a computer program written in source code can be tedious, time consuming and error...
doctoral thesis 2013
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Lloberas-Valls, O. (author)
Computational material design is progressively gaining momentum in the engineering world. Recent breakthroughs in high performance computing and emerging multiscale algorithms have facilitated the simulation of materials at different scales of observation. In particular, the multiscale study of failure phenomena becomes crucial to assess the...
doctoral thesis 2013
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Nikbakht, M. (author)
Although computers were invented to automate tedious and error-prone tasks, computer programming is a tedious and error-prone task itself. This is a well-known paradox in the field of computational mathematical modelling. Recently, automatic code generation has been proposed to solve this paradox. In this approach, a required code to model...
doctoral thesis 2012
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Radtke, F.K.F. (author)
Failure patterns and mechanical behaviour of high performance fibre-reinforced cementitious composites depend to a large extent on the distribution of fibres within a specimen. A discrete treatment of fibres enables us to study the influence of various fibre distributions on the mechanical properties of the material. The numerical analysis of...
doctoral thesis 2012
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Shabir, Z. (author)
A deeper understanding of the deformation and failure mechanisms in polycrystals is of utmost importance for their reliable use as engineering materials. These mechanisms are strongly influenced by the geometry of the granular arrangement. In this work, two-dimensional intergranular quasi-static crack propagation in brittle polycrystals and...
doctoral thesis 2012
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Hilberink, A. (author)
Installing lined pipe by means of the reeling installation method seems to be an attractive combination, because it provides the opportunity of eliminating the demanding welds from the critical time offshore and instead preparing them onshore. However, reeling of lined pipe is not yet proven technology. From previous research it is known that...
doctoral thesis 2011
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Nguyen, V.P. (author)
The conventional multiscale homogenization theory, which has mainly been applied to determine constitutive laws for bulk materials, suffers from two drawbacks when applied to softening materials. Firstly, the coarse scale response is sensitive to the finite element mesh used to discretize the coarse scale domain. Secondly, increasing the size of...
doctoral thesis 2011
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Van der Meer, F.P. (author)
There is no state of the art computational model that is good enough for predictive simulation of the complete failure process in laminates. Already on the single ply level controversy exists. Much work has been done in recent years in the development of continuum models, but these fail to predict the correct failure mechanism in cases where...
doctoral thesis 2010
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He, H. (author)
Physical particle packing is becoming a hot topic in concrete technology as more and more types of granular materials are used in concrete either for ecological or for engineering purposes. Although various analytical methods have been developed for optimum mixture design, comprehensive information on particle packing properties is still missing...
doctoral thesis 2010
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Pedersen, R.R. (author)
A safe design of civil engineering concrete structures must include dynamic loading conditions. However, the knowledge on crack patterns and tensile failure strength of concrete material as a function of the dynamic loading is not sufficiently understood to accurately predict the risks and consequences of accidents. Concrete is a rate-dependent...
doctoral thesis 2010
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Moonen, P. (author)
Degradation of porous materials usually does not have a single identifiable cause, but results from the complex interaction between different types of degradation mechanisms. In the study at hand, both experimental and numerical methods are employed to gain insight herein. A novel continuous-discontinuous concept to model physical degradation of...
doctoral thesis 2009
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Nguyen, T.D. (author)
A structural thin bending problem is essentially associated with a fourth-order partial differential equation. Within the finite element framework, the numerical solution of thin bending problems demands the use of C^1 continuous shape functions. Elements using these functions are challenging and difficult to construct. A particular...
doctoral thesis 2008
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Iacono, C. (author)
In the last years, many computational models have been developed for tensile fracture in concrete. However, their reliability is related to the correct estimate of the model parameters, not all directly measurable during laboratory tests. Hence, the development of inverse procedures is needed, that provides the parameters estimate minimizing,...
doctoral thesis 2007
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Guo, Z. (author)
The simulation of rubber-like material behaviour by means of the finite element method has been described in this study. Proper material models for the numerical description of static hyper-elasticity, the ideal Mullins effect and the Mullins effect with permanent deformation were proposed, respectively. The second focus of this study was the...
doctoral thesis 2006
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Pannachet, T. (author)
Accuracy of a finite element solution depends greatly on the spatial discretisation of the problem domain. The more refined/enriched discretisation provides better accuracy but also requires more computational cost. For modelling of quasi-brittle failure, the process zone where failure takes place can be very small, thus it is very cost...
doctoral thesis 2006
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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: contributor:"Sluys, L.J. (promotor)"
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