Browsing by Subject "Vibroacústica"

Now showing items 1-13 of 13

    • An experimental exploration of the properties of random frequency response functions 

      Clot Razquin, Arnau; Meggitt, J.W.R.; Langley, Robin; Elliott, Andrew; Moorhouse, Andy (2021-01)
      Article
      Open Access
      The vibro-acoustic analysis of complex structures over a broadband frequency range is an extremely challenging problem that may often require the use of a hybrid deterministic-statistical approach. Due to manufacturing ...

    • Coupling of numerical and statistical methods in acoustics 

      Díaz Cereceda, Cristina (Universitat Politècnica de Catalunya, 2010-01-10)
      Master thesis
      Open Access
      Problems in the field of vibroacoustics can be modelled in two fundamental ways. On the one hand, they can be addressed in a deterministic way, using numerical methods like the Finite Element Method. On the other hand, ...

    • Development of a hybrid FE-SEA-experimental model 

      Clot Razquin, Arnau; Meggitt, J.W.R.; Langley, Rob; Elliott, A; moorhouse, A (2019-12-01)
      Article
      Open Access
      The vibro-acoustic response of complex structures with uncertain properties is a problem of great concern for modern industries. In recent years, much research has been devoted to the prediction of this response in the ...

    • Estudi de la potència sonora de la caixa de ressonància d'una guitarra mitjançant simulacions amb elements finits 

      Górriz Hereu, Nil (Universitat Politècnica de Catalunya, 2018-09)
      Master thesis
      Restricted access - author's decision
      Els instruments musicals acústics tenen la peculiaritat d’extreure una notable potència sonora, i aquesta potència sonora va directament relacionada amb l’estructura del instrument. En aquest treball es realitza un anàlisi ...

    • Experimental validation of a hybrid FE-SEA-experimental model 

      Clot Razquin, Arnau; Meggitt, J.W.R.; Langley, Robin; Moorhouse, Andy; Elliott, Andrew (Institute of Noise Control Engineering, 2020)
      Conference report
      Restricted access - publisher's policy
      Modern manufacturers usually need to know at a design stage if their products will meet certain vibro-acoustic requirements. In many cases the use of physical prototyping becomes significantly expensive, and engineers opt ...

    • On the use of experimental ensembles in a hybrid deterministic-statistical energy analysis method 

      Clot Razquin, Arnau; Langley, Robin; Meggitt, J.W.R.; Moorhouse, Andy; Elliott, Andrew (2020)
      Conference report
      Restricted access - publisher's policy
      There is a clear need in modern industries for models that can predict the vibro-acoustic response of their manufactured products at the design stage. Models based on the hybrid deterministic-statistical method are a ...

    • Sub-structuring of mechanical systems based on the path concept 

      Magrans Fontrodona, Francesc Xavier; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (Deutsche Gesellschaft für Akustik e.V. (DEGA), 2016)
      Conference report
      Restricted access - publisher's policy
      Real mechanical systems are usually complex. Their modelling with discretisation techniques involve a large number of degrees of freedom/unknowns. This leads to high computational costs especially at high frequencies. An ...

    • The finite strip method for acoustic and vibroacoustic problems 

      Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2011-12)
      Article
      Open Access
      The finite strip method, widely employed in structural mechanics, is extended to solve acoustic and vibroacoustic problems. The acoustic part of the formulation, including how to handle the most typical acoustic boundary ...

    • The solution of linear mechanical systems in terms of path superposition 

      Magrans Fontrodona, Francesc Xavier; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2017-02)
      Article
      Open Access
      We prove that the solution of any linear mechanical system can be expressed as a linear combination of signal transmission paths. This is done in the framework of the Global Transfer Direct Transfer (GTDT) formulation for ...

    • Uma abordagem com superposição modal para problemas de interação fluido‐estrutura 

      Ribeiro, P.M.V.; Pedroso, L.J. (Universitat Politècnica de Catalunya. CIMNE, 2016)
      Article
      Open Access
      Em muitas aplicações práticas da engenharia verifica‐se a interação de domínios distintos, onde os efeitos de acoplamento são importantes na avaliação da resposta estrutural. Um caso de interesse é dado pela interação ...

    • Vibro-acoustic analysis of a domestic product based on experimental measurement and hybrid modelling 

      Meggitt, J.W.R.; Clot Razquin, Arnau; Elliott, Andrew; Moorhouse, Andy (2021-11-01)
      Article
      Open Access
      The purpose of this paper is to present a case study whereby a hybrid experimental–numerical model is used to analyse the structure-borne radiation from a domestic product (vacuum cleaner head). The passive (including ...

    • Vibroacoustic coupling and transmission paths 

      Magrans Fontrodona, Francesc Xavier (Universitat Politècnica de Catalunya, 2018-12-21)
      Doctoral thesis
      Open Access
      This dissertation deals with four topics. The first three are in the same environment, the transmission paths. The fourth refers to the synthesis of subsystems and more specifically to two subsystems linked by any number ...

    • Vibroacoustic modelling of orthotropic plates 

      Villar Venini, Jordi (Universitat Politècnica de Catalunya / Politecnico di Milano, 2011)
      Master thesis (pre-Bologna period)
      Open Access
      The main objective of the work here presented is to extend the calculation of the radiation efficiency to plates whose characteristics differ form the simply supported isotropic rectangular plates. In this work the radiation ...