Searched for: subject%3A%22SD%255C%2B%255C-%255C%2BStructural%255C%2BDynamics%22
(141 - 160 of 178)
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van Bentum, C.A. (author), Geurts, C.P.W. (author)Voor de bepaling van de windbelasting schieten de normen soms tekort. Bij afwijkende gebouwvormen of omgevingssituaties zijn er alternatieve bepalin gsmethoden voorhanden: op schaal in de windtunnel, op ware grootte of via numerieke simulatie. In een meerjarig onderzoek wordt met de drie methoden informatie verzameld om betere...article 2012
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Bronkhorst, A.J. (author), van Bentum, C.A. (author), Geurts, C.P.W. (author)Pressure measurements on the surfaces of a high-rise building model with height h = 0.48 m and width b = 0.12 m were performed in a boundary layer wind tunnel. Experiments were carried out for an isolated model and for three configurations with an interfering half-height building model. The effects of the interfering building to the minimum peak...conference paper 2012
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Kalkman, I.M. (author), Bronkhorst, A.J. (author), van Bentum, C.A. (author), Franke, J. (author)Five root-mean-square (RMS) pressure models are used in combination with different turbulence models to determine whether it is possible to obtain a conservative estimate of RMS pressures on a high-rise building model from a RANS calculation. When a precursor domain is used for the generation of inlet profiles the turbulent kinetic energy is...conference paper 2012
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Schipperen, J.H.A. (author)The application of complex fiber reinforced composite structures is increasing. This calls for a better understanding of the behavior of these structures, including the propagation of damage. In this research a secondary bondline failure model was developed as part of a failure prediction tool. Validation against laboratory experiments of hat...conference paper 2012
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Eijk, A. (author), Lentzen, S.S.K. (author), Zuada Coelho, B.E. (author), Galanti, F.M.B. (author)Reciprocating compressors are generally supported on a heavy concrete foundation. In spite of the large inertia and stiffness of the foundation, problems can occur due to interaction between the mechanical installation and the foundation. Two types of problems may occur. In the first type, the interaction is such that excessive vibration levels...conference paper 2012
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Peelen, W.H.A. (author), Vervuurt, A.H.J.M. (author), Zuada Coelho, B.A. (author), Leendertz, H. (author)One of the existing modular expansion joints of the Martinus Nijhoff Bridge in the Netherlands was monitored with the purpose of extending its service life for on year until replacement in 2011. Based on an analyses of the failure mechanisms of this (type of) joint, strain gauges were used as sensors and applied at centre and crossbeams. Chosen...public lecture 2012
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Walters, C.L. (author)This paper describes the effect of impacts on the possible reduction of the structural characteristics and damage growth of graphite-epoxy specimens. The considered specimens are undamaged specimens and specimens impacted with two different energy levels. In particular, barely visible impact damage and visible impact damage are investigated....article 2012
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Zuada Coelho, B.A. (author), Koopman, A. (author)Vibration isolation of buildings is often achieved by introducing spring systems at the foundation level. This can be an effective measure, especially against vibrations induced by noise, but it is also very costly. Due to the current usage of the cities space, where buildings and infrastructures share the same areas, this problem gains...conference paper 2012
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Lentzen, S.S.K. (author), Koopman, A. (author)Lightweight floors are prone to high levels of vibration due to human activities. The Dutch building code imposes regulations on floors with respect to safety, health and serviceability. The walking-induced vibrations of floors are not incorporated in these regulations. The private law arrangement in the NEN 6702 (510.5,2) [1] does not...bookPart 2012
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Riley, M. (author), Smith, M. (author), van Aanhold, J.E. (author), Alin, N. (author)The study describes recent simulation results for underwater explosions in close-proximity to rigid targets. Simulations are performed using Chinook, an Eulerian computational fluid dynamics (CFD) code. Predicted target loadings are compared with measurements taken from a series of experiments conducted under an international collaboration...article 2012
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Janssen, M.M.H.H. (author), Schipperen, J.H.A. (author), Vredeveldt, A.W. (author)The crashworthiness of a structure can have a large effect on the area based risk in case of collisions. Typical examples are chemical tankers sailing the European inland waterways and offshore structures at our shores. Therefore, the assessment of crashworthiness is nowadays often included in the design process of such structures. But what if...article 2012
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Bronkhorst, A.J. (author), van Bentum, C.A. (author), Geurts, C.P.W. (author), de Jong, A. (author)Particle Image Velocimetry (PIV) and pressure measurements were performed on a highrise model with a height (H) of 0.48 m and a width (B) of 0.12 m in a turbulent atmospheric boundary layer. Experiments were carried out for an isolated model and four tandem configurations with varying separation distance (S) between the models. Mean and standard...conference paper 2012
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Smit, C.S. (author)Fast reaction is required when a chilled water distribution network on board a naval ship is damaged. Without immediate isolation of the leakage area, all water supply is lost soon, with immense consequences for the ship’s operational state. The only solution for that is using an automated recovery approach. Recently, the effectiveness of...conference paper 2012
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Tuitman, J.T. (author), Malenica, S. (author), van 't Veer, R. (author)The concept of "generalized modes" is to describe all degrees of freedom by mode shapes and not using any predefined shape, like rigid body modes. Generalized modes in seakeeping computations allow one to calculate the response of a single ship, springing, whipping, multibody interaction, etc., using a uniform approach. The generalized modes...article 2012
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- Tuitman, J.T. (author) conference paper 2012
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Smit, C.S. (author), Janssen, J.A.A.J. (author), van Bodegraven, K.S. (author), Logtmeijer, R.A. (author), Stanley, J. (author), de Wildt, F.W.J. (author), Annakin, B. (author), Doherty, G. (author)The combat systems of a naval ship are essential to the operational effectiveness of the maritime unit; less obviously, this is also true for several marine systems. The operation of the combat systems, the control of (battle) damage, and the ship's mobility all depend on functions provided by a subset of the marine systems: the electrical...public lecture 2012
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Lentzen, S.S.K. (author), Galanti, F. (author), Koopman, A. (author)Het is al weer meer dan 6 jaar geleden dat de SBR richtlijn "Trillingen van vloeren door lopen" is uitgebracht. Dit is een fysisch en statistisch goed onderbouwde richtlijn die de constructeur en de bouwfysisch adviseur ondersteunt bij het vermijden van hinderlijke trillingen van vloeren door menselijk activiteiten (met name door lopen). Sinds...article 2012
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Walters, C.L. (author), Schipperen, J.H.A. (author)More than any other application, simulation of crash events depends on the precise representation of fracture. At the same time, practical considerations typically force the crash analyst to use shell elements for many types of thin-walled structures, such as cars, aircraft, and ships. For these reasons, improving the reliability of fracture for...conference paper 2012
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Lindström, J. (author), Rahm, M. (author), Hiltz, J. (author), Boonacker, B. (author), van der Wal, R. (author), Haara, M. (author)Ammunition storage spaces on naval vessels are commonly fitted with drencher systems that are designed to prevent ordnance reaching a temperature where it might explode due to fast or slow “cook‐off”. Many of these systems are traditional low pressure water spray systems that are required by the Naval Ship Code and class requirements to deliver...article 2012
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Kalkman, I.M. (author), Lentzen, S.S.K. (author), Courage, W.M.G. (author), Napoles, O.M. (author), Galanti, F.M.B. (author)In general the condition of a structure can be assessed in terms of a performance indicator. For example, this can be the strength of a structure. An asset manager is concerned with ensuring that the performance of a structure does not fall below a given minimum level. This can be achieved by inspecting or monitoring the structure. As the...conference paper 2011
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