Littérature scientifique sur le sujet « Prestazione acustica »
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Articles de revues sur le sujet "Prestazione acustica"
MARSELLA, P., S. GIANNANTONIO, A. SCORPECCI, F. PIANESI, M. MICARDI et A. RESCA. « Ruolo della stimolazione bimodale nello sviluppo delle abilità percettivo-uditive nei bambini con impianto cocleare monolaterale ». Acta Otorhinolaryngologica Italica 35, no 6 (décembre 2015) : 442–48. http://dx.doi.org/10.14639/0392-100x-617.
Texte intégralFortunato, S., F. Forli, V. Guglielmi, E. De Corso, G. Paludetti, S. Berrettini et A. R. FetonI. « Ipoacusia e declino cognitivo : revisione della letteratura ». Acta Otorhinolaryngologica Italica 36, no 3 (mai 2016) : 155–66. http://dx.doi.org/10.14639/0392-100x-993.
Texte intégralThèses sur le sujet "Prestazione acustica"
Posa, Alice. « Ottimizzazione delle prestazioni termiche ed acustiche di pannelli sandwich isolanti per facciata ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Trouver le texte intégralVETTORELLO, ANDREA. « Sviluppo di una metodologia numerica per la riduzione del rumore nella cavità acustica in veicoli ad alte prestazioni ». Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2022. http://hdl.handle.net/11380/1277105.
Texte intégralIn recent years, the description and reduction of noise in the passenger compartment have become an increasingly central aspect in the automotive field, especially for the spread of vehicles equipped with electric power units. The description of this dynamic phenomenon requires the identification of the source of the noise and its propagation paths to the receiver, which is usually the ears of the driver and the occupants of the vehicle. Generally, noise propagates either via air, or through the vibration of the vehicle's structural subsystems, which represent the transfer function between source and receiver. All the components that determine the modal behaviour of the system must be included in the simulation model to obtain the acoustic characteristics of the vehicle. Therefore, the study of these phenomena takes place experimentally and through simulation models on a Trimmed-Body (TB). The acoustic cavity may be defined as the air volume within the passenger compartment, in TB configuration of the vehicle. Finite Element analyses consent to reconstruct the trend of the noise transfer functions (NTF) through fluid-structure frequency response analysis. From these analyses, it might also be evaluated the participation factors of the vibrating components with relative modes to the noise at the ear inside the cavity. The results allow the appropriate measures to be devised to solve any noise problem. Thus, in the development of a new vehicle, the noise performance is only evaluated at the final stages of the project, in which many components are already established and no longer adjustable. If noise levels do not meet the desired targets, restricted modifications to the project can be adopted to solve the issues. Furthermore, the identification of the causes of the noise could be a costly process due to the great complexity of the system. This thesis aims to define a CAE methodology that aims to predict problems related to in-borne noise since the earliest stages of development of a new vehicle, i.e., in the definition phase of the so-called Body-in-White (BIW) layout. The proposed study is based on the analysis of the radiated power (ERP) of vibrating components as a tool to discriminate the components likely to cause most of the noise in the passenger compartment. The link between the vibration of structural components and the perturbation of the pressure field of the fluid that wets these components offers the possibility of freeing oneself from the modelling of the acoustic cavity, and approaching the problem in terms of radiated power, therefore simulating approximate transfer functions directly on Body-in-White models. Once the problematic components are identified, numerical optimization techniques are proposed to meet the performance targets, reducing the number of calculations required by conventional methods (e.g. trial and errors loops). The main tool in these analyses is Finite Element Simulation. This methodology offers the possibility of developing a Trimmed-Body model with an improved level of acoustic comfort by reducing the development time of a new vehicle.
Zeoli, Domenico. « Analisi prestazionale di pavimentazioni contenenti polverino di gomma da PFU ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
Trouver le texte intégralTirocchi, Martina. « Legno e bambù lamellare : materiali ecosostenibili a confronto nel caso studio di un garden office con prestazioni acustiche nella copertura ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23709/.
Texte intégralLivres sur le sujet "Prestazione acustica"
Carotti, Attilio. Edifici a elevate prestazioni energetiche e acustiche : Energy management. Milanofiori Assago (MI) : Wolters Kluwer, 2014.
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