Searched for: subject%3A%22Finite%255C%2Belement%255C%2Banalysis%22
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Rozsas, A. (author), Slobbe, A. (author), Martini, G. (author), Jansen, R. (author)
This paper describes a static diagnostic load testing and measurement campaign of a reinforced concrete road bridge in Amsterdam. We consider 29 vertical translation sensors and 37 strain sensors. Multiple Bayesian parameter estima tions are performed to estimate two structural and two load parameters of a three-dimensional finite element (FE)...
article 2022
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Snell, R. (author), Atkins, C. (author), Schnetler, H. (author), Todd, I. (author), Hernández-Nava, E. (author), Lyle, A.R. (author), Maddison, G. (author), Morris, K. (author), Miller, C. (author), Roulet, M. (author), Hugot, E. (author), Tenegi Sanginés, F. (author), Vega-Moreno, A. (author), Van De Vorst, L.T.G. (author), Dufils, J. (author), Brouwers, L. (author), Farkas, S. (author), MezA, G. (author), Beardsley, M. (author), Harris, M. (author)
Additive Manufacturing (AM; 3D printing) for mirror fabrication allows for intricate designs that can combine lightweight structures and integrated mounting. Conventional lightweight structures utilise cubic or prismatic unit cells, which do not provide uniform support at the edge of curved mirrors. We present a new circular lattice based upon...
conference paper 2020
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Ozbek, A.S. (author), Pedersen, R.R. (author), Weerheijm, J. (author), van Breugel, K. (author)
This study presents the numerical analyses conducted to investigate the impact behavior of different porous concretes, which have also been cast and tested experimentally. For a realistic representation of the real porous concretes containing arbitrary shaped air pores, a mesh generation code was developed in which the aggregates in the mixtures...
article 2019
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Slobbe, A. (author), Rózsás, Á. (author), Allaix, D.L. (author), bigaj-van Vliet, A. (author)
The objective of this paper is to explore the value of reliability-based nonlinear finite element analysis (NLFEA) over the currently available, standardized assessment methods. To our knowledge, no studies are available on this subject, and this paper provides a first insight into the value and reliability level of these assessment methods. The...
article 2019
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Slobbe, A.T. (author), Rozsas, A. (author), Allaix, D.L. (author), Bigaj-van Vliet, A.J. (author)
conference paper 2019
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Rikken, M. (author), Pijpers, R.J.M. (author), Slot, H.M. (author), Maljaars, J. (author)
This study examines residual stresses in bead-on-plate welded specimens in transverse direction over the thickness of the plate, using a combination of experimental and numerical procedures. Dilatometer and tensile tests were used to determine the phase transition temperatures with associated volumetric strains and the stressstrain relationships...
article 2018
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Gupta, D.K. (author), Barink, M. (author), Galagan, Y. (author), Langelaar, M. (author)
Free-form solar cells expand solar power beyond traditional rectangular geometries. With the flexibility of being installed on objects of daily use, they allow making better use of available space and are expected to bring in new possibilities of generating solar power in the coming future. In addition, their customizable shape can add to the...
article 2017
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Gupta, D.K. (author), Barink, M. (author), Galagan, Y. (author), Langelaar, M. (author)
Free-form solar cells expand solar power beyond traditional rectangular geometries. With the flexibility of being installed on objects of daily use, they allow making better use of available space and are expected to bring in new possibilities of generating solar power in the coming future. In addition, their customizable shape can add to the...
article 2016
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Pintar, F.A. (author), Philippens, M.M.G.M. (author), Zhang, J. (author), Yoganandan, N. (author)
The objective of the study was to obtain helmet-to-head contact forces from experiments, use a human head finite element model to determine regional responses, and compare outputs to skull fracture and brain injury thresholds. Tests were conducted using two types of helmets (A and B) fitted to a head-form. Seven load cells were used on the head...
article 2013
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Damoni, C. (author), Belletti, B. (author), Lilliu, G. (author)
In this paper the behavior of a squat shear wall subjected to monotonic shear loading is investigated. The study fits into the experimental program driven by CEOS.fr on modeling of the behavior of the tested mocks-ups (monotonic and cycling loading-under prevented or free shrinkage). The shear wall has been analyzed with nonlinear finite element...
conference paper 2013
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Zampolli, M. (author), Nijhof, M.J.J. (author), de Jong, C.A.F. (author), Ainslie, M.A. (author), Jansen, E.H.W. (author), Quesson, B.A.J. (author)
The acoustic radiation from a pile being driven into the sediment by a sequence of hammer strikes is studied with a linear, axisymmetric, structural acoustic frequency domain finite element model. Each hammer strike results in an impulsive sound that is emitted from the pile and then propagated in the shallow water waveguide. Measurements from...
article 2013
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Ligterink, N.E. (author), Hageraats-Ponomareva, S.V. (author), Velthuis, J.F.M. (author)
The mechanical integrity of heat exchangers is the result of an interplay of many physical phenomena. A full, albeit simple, model, that covers mixture phase thermodynamics, heat transfer, flow dynamics, and the thermal and pressure stresses has been created. Using this simulation model it is now possible to quantify the magnitude of different...
article 2012
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Espana, A.L. (author), Williams, K.L. (author), Kargl, S.G. (author), Zampolli, M. (author), Marston, P.L. (author), TNO Defensie en Veiligheid (author)
Recent experiments conducted in a fresh water pond investigated the monostatic scattering from an aluminum pipe (length-to-diameter ratio of 2) in the free field, as well as in a proud configuration on a flattened sand sediment. Synthetic aperture sonar (SAS) techniques are used to process the data. Absolute target strength is calculated over...
conference paper 2010
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Fatemi, J. (author), Lemmen, M.H.J. (author), TNO Industrie en Techniek (author)
The present work addresses the computation of the effective thermal and mechanical properties of a honeycombcore sandwich panel. The panel considered has a hexagon-cell honeycomb core. An alternative method, based on the Gebhart factors within a hexagonal cell, is presented in addition to the familiar Swann-Pittman method. The advantage of the...
article 2009
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Landucci, G. (author), Molag, M. (author), Reinders, J. (author), Cozzani, V. (author), TNO Bouw en Ondergrond (author)
Two large-scale diesel pool fire engulfment tests were carried out on LPG tanks protected with intumescing materials to test the effectiveness of thermal coatings in the prevention of hot BLEVE accidental scenarios in the road and rail transport of LPG. A specific test protocol was defined to enhance reproducibility of experimental tests. The...
article 2009
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Day, J.S. (author), van der Linden, J.C. (author), Bank, R.A. (author), Ding, M. (author), Hvid, I. (author), Sumner, D.R. (author), Weinans, H. (author), TNO Preventie en Gezondheid (author)
Osteoarthritis is a chronic joint disease with pathological changes in the articulating cartilage and all other tissues that occupy the joint. Radin and coworkers have suggested the involvement of subchondral bone in the disease process. However, evidence for an essential role in the etiology has never been proven. Recent studies showing reduced...
article 2004
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TNO Preventie en Gezondheid (author), Verkerke, G.J. (author), Lemmink, K.A.P.M. (author), Slagers, A.J. (author), Westhoff, M.H. (author), van Riet, G.A.J. (author), Rakhorst, G. (author)
The mechanical performance, repeatability and comfort of the Quadrisotester, which assesses isometric knee extensor muscle strength, were examined. Twenty healthy subjects and 20 patients treated for unilateral anterior ligamenta cruciata insufficiency were tested. Intra-rater repeatability was determined by the testing and retesting of subjects...
article 2003
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Bouman, M.A. (author)
In the model presented here, in the dark any single quantum absorption in a rod or cone produces a subliminal excitation. Subliminal excitations from both halves of a twin unit pair in the retina for the perception of light from the stimulus. A twin unit contains either two red or two green cones. The twin units are intertwined in triples of two...
article 2002
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Fairlie, G.E. (author), Steenbrink, A.C. (author), TNO Automotive (author)
There is increasing pressure to reduce injuries and fatalities by effectively using airbags for side impact and out-of-position impact loading conditions. The simulation of these scenarios is particularly difficult as the occupant is interacting with the airbag at early times during the airbag deployment when the detailed behaviour of the airbag...
article 2001
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Steenbrink, A.C. (author), Fairlie, G.E. (author), TNO Wegtransportmiddelen Century Dynamics (author)
There is increasing pressure to reduce injuries and fatalities by effectively using airbags for side impact and out-of-position impact loading conditions. The simulation of these scenarios is particularly difficult as the occupant is interacting with the airbag at early times during the airbag deployment when the detailed behaviour of the airbag...
conference paper 2000
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