72 research outputs found
On the design of near-optimum control procedures with the aid of the lyapunov stability theory
No full textMechanical, Maritime and Materials Engineerin
Some future directions in computational failure mechanics
No full textContinuum approaches are reviewed which can properly model localised deformations that act as a precursor to final fracture in quasi-brittle materials. Next, one such higher-order damaging continuum model is combined with a stochastic approach to describe the heterogeneity in quasi-brittle materials
Engineering aspects of biocatalysts in industrial starch conversion technology
No full textSummary in DutchApplied SciencesApplied Science
Finite element reliability methods using DIANA
No full textFinite element relia.bility methods (FERM) a.re used for the analysis of a simply supported beam with a randomly distributed elastic stiffness. Two-noded Euler beam elements have been used to model the structure. The probability of exceeding a given threshold for the deflection at a certain point is calculated via FERM. The computer implementation makes use of the DIANA 5.0 finite element code
Towards better decision support during planned maintenance in the Oxygen Steel Factory 2: An analysis of the effects of maintenance on steel ladle routing
No full textTata Steel IJmuiden (Tata Steel) is the successor of Koninklijke Nederlandsche Hoogovens en Staalfabrieken NV. Tata Steel is now part of Tata Steel Group, Indias largest industrial group producing in excess of 20 million tons of crude steel annually. Tata Steel produces seven million tons of high quality coated steel per annum. In chapter 1 the Tata Steel factory layout for the Oxygen Steel Factory 2 (OSF2) and process steps are illustrated. The key issue for this research is the logistical friction between (planned) maintenance and production continuity. This logistical challenge is projected on Tata Steels focal points. The chapter concludes with both the goal of this research - to create a scientifically underpinned decision support tool - and the outline of the report. In order to design the outline for a decision support tool, aiming to investigate the relationship between maintenance and production continuity, the study of the relevant literature is reported in chapter 2. It is evident that varying scientific approaches have been carried out to study steel production factories specifically, and maintenance versus production continuity in general. Roughly three different approaches are distinguished: (1) Integral production process improvement methods, represented by amongst others lean manufacturing, theory of constraints, quick response manufacturing and six sigma, (2) specific production process analysis and improvements methods varying from model- and simulation based approaches to more descriptive research approaches, (3) project management approaches geared towards operational effectiveness...Mechanical, Maritime and Materials EngineeringMarine and Transport TechnologyTransport Engineering and Logistics2015.TEL.794
3D Finite element analysis of a scaled trapezoidal 3-story reinforced concrete structure on a shaking table
No full textThis master thesis is about finite element analyses of a 3D model of a 1/4th scaled trapezoidal 3-story reinforced concrete mock-up on a shaking table which is part of Smart 2013 international benchmark. The idea of this benchmark is to asses and predict the dynamic behavior of the reinforced concrete mock-up with respect to seismic loading using finite element method software. In this master thesis, the finite element method software Diana is used to asses and predict the dynamic behavior of the scaled mock-up with respect to seismic loading.Structural MechanicsStructural EngineeringCivil Engineering and Geoscience
Geomechanical modelling and subsidence prediction of salt deposits for solution mining
No full textSection Resources EngineeringGeoscience & EngineeringCivil Engineering and Geoscience
Impact on Seismic Capacity of Unreinforced Masonry Houses- by varying the Geometrical Parameters of Terraced House
No full textCivil Engineering and GeosciencesStructural EngineeringStructural Mechanic
Enhancing iterative solution methods for general FEM computations using rigid body modes.
No full textApplied MathematicsNumerical AnalysisElectrical Engineering, Mathematics and Computer Scienc
Outsourcery: Simply extending home automation using plugins
No full textHomeWizard B.V. is looking to expand the range of compatible TCP/IP devices for its home automation hub. To this end, the company wants to use third-party plugins that control these devices. To allow even people with little programming experience to make devices compatible with the HomeWizard hub, these plugins have to be easy to create. These demands pose an interesting challenge: to create a system that is flexible enough to control hundreds of different devices, while being simple enough to be used by people with little programming experience. During the research phase of the project, existing home automation solutions were studied, as well as home automation techniques. The clients current position in the market was also researched to get a better understanding of the clients needs. During the implementation of the product, scrum was applied to manage the project. Prototypes were created in sprints of two weeks. A final prototype, called Outsourcery, is delivered at the end of the project. Outsourcery is a flexible home automation solution, facilitating the use of plugins to extend compatibility with both devices and network protocols. Outsourcery has been tested using unit tests and manual testing. An acceptance test determined that the creation of plugins is relatively easy. Outsourcery is a good start towards a universal home automation solution. However, it has still some way to go before it reaches maturity. Some required steps have been detailed in the report. Furthermore, some recommendations are done regarding the development of a plugin developer platform and making said platform available to customers.Bachelor Computer ScienceComputer ScienceElectrical Engineering, Mathematics and Computer Scienc
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