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Holtzer, Bart (author)So far, structural topology optimization has been mainly focused on linear problems. Much less attention has been paid to geometrically nonlinear problems, although it has a lot of interesting applications. The objective of this work is to implement a method to solve topology optimization problems under finite displacements and rotations. The...master thesis 2017
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Oudshoorn, Tijmen (author)This thesis consist of the graduation project executed in cooperation with the municipality of the Hague, at design studio DIDID in the Hague. The beaches of the Hague are cleaned by so called beach cleaners. Beach cleaners are large tractor pulled screening machines that effectively screen/rake garbage from the beach. There is however a problem...master thesis 2017
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Teeuw, M.A. (author)The Dutch Marine grounds are located in the very city centre of Amsterdam on the Marine Terrein, all 14 hectares of the area have been forbidden to access for a very long time until now. The Dutch Marine is leaving the area in stages because of budget cuts from 2015 till 2018. The terrain is badly connected to the centre; all the utility...master thesis 2017
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Radaelli, G. (author), Herder, J.L. (author)The research on compliant shell mechanisms is a new and promising expansion of the well established compliant mechanisms research area. Benefits of compliant shell mechanisms include being spatial and slender, having organic shapes and their high tailorability of the load-displacement response. This work focusses on the design of a shell with...journal article 2017
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Li, Q. (author), Su, Y. (author), Wu, Y. (author), Borgart, A. (author), Rots, J.G. (author)Vector form intrinsic finite element is a recently developed and promising numerical method for the analysis of complicated structural behavior. Taking the cable-link element as example, the framework of the vector form intrinsic finite element is explained first. Based on this, a constant strain triangle element is introduced, and relevant...journal article 2017
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Baran, P.K. (author)The large-scale 3D printing technology created by a group of partners led by DUS Architects allows fabricating components made of thermoplastic polymers with Fused Deposition Modelling technique. These components can be used as moulds for concrete elements, providing freedom of form and unprecedented optimization opportunities. In this report...master thesis 2016
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van der Meijs, J.J. (author)A new doubly-curved shell element (ThickS4 element) is presented and tested for flat and singly curved configurations. The benchmark tests show good correlation for the ThickS4 element with the Abaqus S4 shell element and with 3D FEM for flat and highly curved configurations (R/t ≥ 4). For radius over thickness ratios smaller than 4 the element...master thesis 2016
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Oor, R.S. (author)The objective of my graduation project was to understand the lack of loadbearing Fibre Reinforced Polymer (FRP) structures and why in most of the example FRP components are being used as cladding. In order to do that I decided to design an FRP loadbearing canopy, which had to be a shell structure with large spans between its support points. In...master thesis 2016
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Schmeetz, M. (author)A new linear sandwich shell element is presented, based on the third order shear deformation theory from Reddy in combination with a `zig-zag' model. Following from a set of benchmark tests, the sandwich element shows superior accuracy in determining facesheet stresses compared to the Abaqus S4 shell element and a good correlation with 3D finite...master thesis 2016
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Monolithic Piezoelectric Vibration Energy Harvesting: for low frequency and wide bandwidth operationVan Kempen, R.B. (author)Energy harvesting is the process by which energy is derived from environmental vibrations in order to power local electronic systems . The technology gets rid of the need for electrical wires or batteries in a wide range of sensor and communication networks. This work tackles the three most challenging aspects in the field of vibration energy...master thesis 2016
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Pietra, F. (author), De Trizio, L. (author), Hoekstra, Anne W. (author), Renaud, N. (author), Prato, Mirko (author), Grozema, F.C. (author), Baesjou, Patrick J. (author), Koole, Rolf (author), Manna, L. (author), Houtepen, A.J. (author)Colloidal quantum dots (QDs) show great promise as LED phosphors due to their tunable narrow-band emission and ability to produce high-quality white light. Currently, the most suitable QDs for lighting applications are based on cadmium, which presents a toxicity problem for consumer applications. The most promising cadmium-free candidate QDs...journal article 2016
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Didden, A. (author), Hillebrand, P. (author), Wollgarten, M. (author), Dam, B. (author), Van de Krol, R. (author)Conductive TiN shells have been deposited on SiO2 nanoparticles (10–20 nm primary particle size) with fluidized bed atomic layer deposition using TDMAT and NH3 as precursors. Analysis of the powders confirms that shell growth saturates at approximately 0.4 nm/cycle at TDMAT doses of >1.2 mmol/g of powder. TEM and XPS analysis showed that all...journal article 2016
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Didden, A.P. (author)Reducing particle size or material structure size to nanometer scale can make the material properties, such as light absorption and electronic structure, change compared to the same materials at normal scale. This gives them properties that can make them suitable for the development of highly efficient and improved micro-electronics, sensor...doctoral thesis 2016
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Schoina, S. (author)The redevelopment of the Post Rotterdam building and, in particular, the design proposal of the vertical foyer initiated this research project. The foyer has a special design and as a result, a special analysis method has to be used. The desired material is steel, consequently stiffened steel shell structure was deemed the most appropriate...master thesis 2016
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- Li, Q. (author), Borgart, A. (author), Wu, Y (author) conference paper 2016
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Eigenraam, P. (author), Borgart, A. (author)Many free form shell structures that have been designed and build in previous decades are fascinating structures. We can learn from these structures by analysing them and studying their structural behaviour. However, in some cases the geometry of these structures is not available; most notably the shapes of shell structures designed and build by...journal article 2016
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Mann, Daniel (author), Nascimento Duplat, D. (author), Keul, Helmut (author), Möller, Martin (author), Verheijen, Marcel (author), Xu, M. (author), Urbach, Paul (author), Adam, A.J.L. (author), Buskens, Pascal (author)Au and Ag nanoshells are of interest for a wide range of applications. The plasmon resonance of such nanoshells is the property of interest and can be tuned in a broad spectral regime, ranging from the ultraviolet to the mid-infrared. To date, a large number of manuscripts have been published on the optics of such nanoshells. Few of these,...journal article 2016
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Friedrich, L (author), Lyssakow, P. (author), Pearce, G. (author), Ruess, M (author), Bisagni, C. (author), Schroder, KU (author)Shell structures are used as primary structures of space launch vehicles. These structures are thin-walled and are thus prone to buckling when loaded in compression. Because of the imperfection sensitivity of these structures, small deviations of the real shell from the theoretically perfect shell may result in a tremendous decrease in load...conference paper 2016
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Blaauwendraad, J. (author), Hoefakker, JH (author)Because a rigorous bending theory for thin shells of revolution is complicated, attempts have been made for reliable approximations of the edge disturbance problem under axisymmetric loading. A well-known one was published by Geckeler [1, 2], who obtained his approximation by mathematical considerations. He started from kinematic,...journal article 2016
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Hoefakker, JH (author), Blaauwendraad, J. (author)Donnell published in 1933 an elegant and rather simple differential equation for the stress analysis in circular cylindrical shells. The civil engineering structural mechanics group in Delft has a long and strong experience in the fifties and sixties of last century in working with this shell equation in close cooperation with the then...journal article 2016