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Listar por palabra clave "Resonance"

Mostrando ítems 1-20 de 47

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A new knock event definition for knock detection and control optimization

Bares-Moreno, Pau; Selmanaj, D; Guardiola, Carlos; Onder, C. (Elsevier, 2018)

[EN] In this paper, the knock phenomenon is studied and characterized in the time-frequency domain. From the analysis results, a new knock event definition is proposed, which compares the excitation of the cylinder resonance ...
An analysis of the in-cylinder pressure resonance excitation in internal combustion engines

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Barbier, Alvin Richard Sebastien (Elsevier, 2018)

[EN] This paper analyses the in-cylinder pressure oscillations in internal combustion engines, which are initiated by combustion and resonate during the expansion stroke. A specific mathematical tool, which takes into ...
Analysis Of The Influence Of The Ballast Track In The Dynamic Behaviour Of Single-Track Railway Bridges Of Different Typologies

Chordà Monsonís, Josep; Martínez Rodrigo, Mª Dolores; Galvín Barrera, Pedro; Romero Ordóñez, Antonio; Moliner Cabedo, Emmanuela (Editorial Universitat Politècnica de València, 2022-05-11)

[EN] Short-to-medium span simply-supported (SS) railway bridges are prone to experience high levels of vertical acceleration due to train passage. The necessity of predicting accurately their dynamic behaviour for design, ...
Assessment of Ground-Borne Vibrations from Urban Rail Transit

Estupiñá Martos, Iván (Universitat Politècnica de València, 2022-10-10)

[EN] The Master's Thesis focuses on ground-borne vibrations caused by rail transit operating in urban environments, i.e., a class of relatively light and slow-moving trains that often run close to buildings and facilities. ...
Comments on Vibration of simply supported beams under a single moving load: A detailed study of cancellation phenomenon by C.P. Sudheesh Kumar, C.Sujatha, K.Shankar [Int.J.Mech.Sci.99(2015) 40 47,doi:10.1016/j.ijmecsci.2015.05.001]

Museros Romero, Pedro; Moliner, E. (Elsevier, 2017)
Comparison of the main magnetic resonance imaging acceleration strategies based on parallel imaging techniques

Acebrón Fabregat, Javier; Moratal Pérez, David; Marti Bonmati, Luis; Brummer, Marijn Eduard (Institute of Electrical and Electronics Engineers (IEEE), 2011-03)

[EN] The main parallel imaging techniques have been implemented under MATLAB (SENSE, PILS and SPACE-RIP for image domain, and SMASH and GRAPPA for k-space domain), evaluating its characteristics about image quality and ...
Cruces entre el arte rupestre y el tao en la pintura.Una experiencia personal

Bernal Cortes, Patricia (Universitat Politècnica de València, 2020-01-10)

[ES] Esta investigación expone un proceso creativo que parte de la recolección y estudio de diversos archivos de la gráfica rupestre y una imbricación con el tao de la pintura Oriental. La propuesta creativa propone una ...
Cycle by cycle NOx model for diesel engine control

Guardiola, C.; Martín, J.; Pla, B.; Bares-Moreno, Pau (Elsevier, 2017)

[EN] This paper presents a model for on-line NOx estimation. The method uses both, low frequency components and high frequency components of in-cylinder pressure signal: it harnesses in-cylinder pressure resonance to ...
Cylinder charge composition observation based on in-cylinder pressure measurement

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Stefanopoulou, Anna (Elsevier, 2019-01)

[EN] Accurate cylinder charge and composition estimation is crucial for proper combustion control, however, current sensors and models show different issues for transient estimation. The work presented in this paper combines ...
Diseño de un prototipo a escala reducida de una estructura para el estudio de vibraciones

González Coutellec, José María (Universitat Politècnica de València, 2024-04-09)

[ES] El estudio de las vibraciones desempeña un papel importante en el diseño de edificios ya que determina si éstas provocarán problemas en la construcción de los mismos o en última instancia cuando estos se utilicen. ...
Dynamic performance of existing double track railway bridges at resonance with the increase of the operational line speed

Moliner, E.; Martínez-Rodrigo, M.D.; Museros Romero, Pedro (Elsevier, 2017)

[EN] This article addresses the dynamic behaviour of double track simply supported bridges of short to medium span lengths (10 m < L< 25 m) belonging to conventional railway lines. These structures are susceptible to ...
Dynamic train-track interaction at high vehicle speeds-Modelling of wheelset dynamics and wheel rotation

Torstensson, P. T.; Nielsen, J. C. O.; Baeza González, Luis Miguel (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2011)

[EN] Vertical dynamic traintrack interaction at high vehicle speeds is investigated in a frequency range from about 20 Hz to 2.5 kHz. The inertial effects due to wheel rotation are accounted for in the vehicle model by ...
Dynamic vibration absorber against oscillations of suspended loads

Robles Casas, José Manuel (Universitat Politècnica de València, 2022-09-16)

[ES] La tesis consiste en el estudio del uso de un amortiguador de masa para la supresión de oscilaciones en cargas suspendidas. Primeramente, se describirá en fenómeno vibratorio y de resonancia, además de una investigación ...
Effects of Resonance between Spatial Structures and Ceiling System on the Seismic Response

ISHIKAWA, Koichiro (Editorial Universitat Politècnica de València, 2009-12-01)

Spatial structures such as a gymnasium and an exhibition hall often use the ceiling because of sound effects. On the other hand, the ceiling members fell down on a large scale. This is the reason why it is needed to ...
Estimación de la masa atrapada en MCIA mediante el estudio de la resonancia de la presión en cámara

Bares Moreno, Pau (Universitat Politècnica de València, 2015-03-09)

[EN] In-cylinder pressure signal has been largely used for analysing the combustion in reciprocating engines, mainly in test benches, although new engines are being designed with closed loop control based on the in-cylinder ...
Estudio de alternativas para la reducción de la resonancia portuaria en la dársena de la Esfinge en el puerto de Las Palmas (Gran Canaria)

Soler Sanchis, Carlos (Universitat Politècnica de València, 2018-09-12)

[EN] The port of Las Palmas is continually growing, owing especially to its situation, which gives major importance to studies to improve the operability and functionality of the port, concepts tied directly to the increase ...
Estudio de la influencia de los efectos giroscópicos e inerciales en la dinámica de un eje ferroviario

Rodríguez Marco, José Enrique (Universitat Politècnica de València, 2018-10-16)

[ES] En este Trabajo Fin de Grado se trata el modelo del eje montado flexible rotatorio tanto en recta como en curva teniendo en cuenta los efectos giroscópicos e inerciales asociados a la rotación del mismo. En el trabajo ...
Estudio de la interacción fluido-estructura en una placa plana en condiciones de acoplamiento unidireccional

Sánchez Moreno, Francisco (Universitat Politècnica de València, 2019-06-28)

[EN] In the present study an analysis about Fluid-Structure Interaction (FSI) is carried out.The geometry is a rectangular flat plate which is attached by one of its sides to a squarecross section bar. This bar is in charge ...
Estudio interpretativo y análisis comparado de los Tres preludios para piano de Henri Dutilleux: D’ombre et de silence (1973), Sur un même accord (1977), Le jeu des contraries (1988)

Juan Segovia, Cristina de (Universitat Politècnica de València, 2016-05-17)

[EN] This research is based on the formal and stylistic analysis of the 3 Preludes for piano by Henri Dutilleux and stops at the identification, location and proposed resolution of the several difficulties techniques which ...
Evaluation of nonpolar metabolites in plant extracts by 13C NMR spectroscopy

Palomino-Schätzlein, Martina; Escrig Aparici, Pablo Vicente; Boira Tortajada, Herminio; Primo Millo, Jaime; Pineda-Lucena, Antonio; Cabedo Escrig, Nuria (American Chemical Society, 2011-10-09)

13C nuclear magnetic resonance (NMR) spectroscopy was explored as a simple and efficient technique for the quantitative analysis of nonpolar metabolites in plants. The method was first optimized with a mixture of known ...