Searched for: subject:"modal%5C+analysis"
(1 - 16 of 16)
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van den Brink, Bram (author), Alijani, F. (author), Ghatkesar, M.K. (author)
An experimental setup to perform dynamic analysis of a micro- and nano-mechanical system in vacuum, gas, and liquid is presented. The setup mainly consists of a piezoelectric excitation part and the chamber that can be either evacuated for vacuum, or filled with gas or water. The design of the piezoelectric actuator was based on a Langevin...
journal article 2019
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Tieleman, O.C. (author), Tsouvalas, A. (author), Hofland, B. (author), Peng, Y. (author), Jonkman, Sebastiaan N. (author)
A model is developed to predict bending vibrations of flood gates with fluid on both sides. The liquid flow is three-dimensional and the gate is represented as a thin plate. The fluid response is considered within the linear potential flow theory including the effect of compressibility and the generation of free surface waves. This way, the...
journal article 2019
document
Bazzica, A. (author)
Digital music platforms have recently become the primary revenue stream for recorded music, making record labels and content owners increasingly interested in developing new digital features for their users.<br/>Besides listening to expert-curated playlists and automatically recommended music, users can also benefit from a more informative, non...
doctoral thesis 2017
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Nord, Torodd S. (author), Kvåle, Knut Andreas (author), Petersen, Oyvind W. (author), Bjerkås, Morten (author), Lourens, E. (author)
The sea ice interaction with a structure may cause system changes and affect the feasibility of common approaches to track modal parameters. In this paper, a covariance-driven stochastic subspace identification method is used to identify the natural frequencies from 190 time series of ice actions against a lighthouse structure. The results...
conference paper 2017
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Uyttenhove, W. (author)
This thesis provides a methodology and set-up of a reactivity monitoring tool for Accelerator-Driven Systems (ADS). The reactivity monitoring tool should guarantee the operation of an ADS at a safe margin from criticality. Robustness is assured in different aspects of the monitoring tool: the choice of the measurement techniques, the evaluation...
doctoral thesis 2016
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Savija, B. (author), Schlangen, E. (author)
Concrete structures are commonly cracked when in service. To overcome issues arising from cracking, self-healing concrete is being developed. Together with the development of the material, techniques to verify and quantify self-healing are being developed. A number of destructive techniques have been used in the past. It would be beneficial to...
conference paper 2015
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Kumar, D. (author), Sharma, A.R. (author), Goyal, T. (author), Shyam, V. (author), Mohite, P.M. (author), Kamle, S. (author)
Flapping wing micro air vehicles (MAVs) have the advantage of being able to fly at slow speeds and have high maneuverability. The design of a flapping wing MAV inspired by birds presents many technical challenges because birds as natural fliers exhibit higher efficiency than any man made flapping wing structure. Thus, the structure and motion of...
conference paper 2014
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Veerman, R.P. (author), Koenders, E.A.B. (author)
For understanding the actual state of durability of concrete structures, it is important to know its response due to external loading. This response mainly depends on the actual structural and material properties of the structure, while loaded. Mechanical and chemical degradation are the main mechanisms that may affect these properties with time...
conference paper 2014
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Miao, S. (author), Veerman, R.P. (author), Koenders, E.A.B. (author), Knobbe, A. (author)
In the field of civil infrastructure, Structural Health Monitoring systems are implemented more and more frequently with the aim to safeguard the safety and service-life of structures such as bridges and tunnels. Changes in the integrity of the material and/or structural properties of this class of structures is known to adversely affect their...
conference paper 2013
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Veerman, R.P. (author), Miao, S. (author), Koenders, E.A.B. (author), Knobbe, A. (author)
The InfraWatch project is a Dutch research project, aimed at developing novel techniques for large-scale monitoring of concrete infra-structures. The project involves a large bridge, fitted with multiple types of sensors that capture the high-resolution dynamic behavior of the bridge. With 145 sensors measuring at 100 Hz, a huge amount of data...
conference paper 2013
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Özbek, M. (author)
Identification of the dynamic properties and the corresponding structural response of wind turbines is essential for optimizing the energy produced, ensuring safe and reliable operation and increasing the life-time of the system. As the sizes of modern wind turbines increase, their dynamic behaviors get more complicated and it becomes more...
doctoral thesis 2013
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Lisandrin, P. (author)
doctoral thesis 2007
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Conza, N.E. (author)
This project finds its justification in the vast economic and social impact that musculoskeletal disorders have at a global level. Many cases of low back pain, which is the most relevant disorder among them, remain a mystery as far as their pathology is concerned. The assumption underlying this work is that, for those mysterious cases, the...
doctoral thesis 2006
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Degroote, J. (author), Vierendeel, J. (author), Dick, E. (author)
Bubbles and droplets can be simulated as a problem involving Fluid-Structure Interaction (FSI). The interface between the liquid and the gas is then conceived as a zero thickness structure. The position of the interface is determined by the equilibrium between surface tension effects and the pressure jump across the interface. Most techniques...
conference paper 2006
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Mohanty, P. (author)
The dynamic behavior of structures is a primordial factor determining its structural stability, reliability and lifespan. Therefore, in many advanced engineering applications, it has become essential to predict the dynamics of new designs through simulations, to identify the dynamic characteristics of prototypes and finally to monitor systems in...
doctoral thesis 2005
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Ellenbroek, M.H.M. (author), Wijker, J.J. (author), de Boer, A. (author)
At Fokker Space and Systems the measured and calculated modal data of an ARA 3-panel-clean-wing were correlated. The number of degrees of freedom (dof's) of the finite element model (FEM) is about 6400 and of the measurement 32. Three methods were used to obtain corresponding dof's namely: 1) the number of dof's of the FEM was reduced with a...
report 1989
Searched for: subject:"modal%5C+analysis"
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