Ara es mostren els items 1-12 de 12

  • A deterministic model of impact noise transmission through structural connections based on modal analysis 

    Díaz Cereceda, Cristina; Hetherington, Jack; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2011-01-17)
    Article
    Accés obert
    Vibration transmission through structural connections is modelled in a deterministic way by means of modal analysis. This model is used first to study the effect of elastic joints across the floor in the transmission of ...
  • A numerical technique for obtaining SEA coupling loss factors in double walls 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2012)
    Text en actes de congrés
    Accés obert
    Double walls usually consist of two leaves of material connected by steel studs. Aside from improving the structural performance, studs create a vibration transmission path which connects the two leaves. There is interest ...
  • An energy model for the acoustic insulation of absorbing materials 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
    Text en actes de congrés
    Accés obert
    In this work an energy model for the acoustic insulation of absorbing ma- terials is shown. This model is an extension of Statistical Energy Analysis (SEA) [1] in order to account for the effect of non-conservative ...
  • An SEA-like model for double walls filled with absorbing materials 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2012)
    Text en actes de congrés
    Accés obert
    Modelling absorbing materials with statistical energy analysis (SEA) is an open issue. They are neither reverberant subsystems nor conservative couplings. The absorbing material layers located inside the cavities of ...
  • Automatic subsystem identification in statistical energy analysis 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2015-03)
    Article
    Accés obert
    An automatic methodology for identifying SEA (statistical energy analysis) subsystems within a vibroacoustic system is presented. It consists in dividing the system into cells and grouping them into subsystems via a ...
  • Coupling of numerical and statistical methods in acoustics 

    Díaz Cereceda, Cristina (Universitat Politècnica de Catalunya, 2010-01-10)
    Projecte Final de Màster Oficial
    Accés obert
    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, ...
  • Efficient models for building acoustics : combining deterministic and statistical methods 

    Díaz Cereceda, Cristina (Universitat Politècnica de Catalunya, 2013-11-15)
    Tesi
    Accés obert
    Modelling vibroacoustic problems in the field of building design is a challenging problem due to the large size of the domains and the wide frequency range required by regulations. Standard numerical techniques, for instance ...
  • Numerical estimation of coupling loss factors in building acoustics 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2013-10)
    Article
    Accés obert
    A study on the optimal procedure for obtaining SEA (statistical energy analysis) coupling loss factors (CLF) numerically is presented. The energies of an SEA system with two subsystems (one excited, the other one unexcited) ...
  • Numerical modelling of impact noise 

    Díaz Cereceda, Cristina (Universitat Politècnica de Catalunya, 2009-06-01)
    Tesina
    Accés obert
    El objetivo de esta investigación es desarrollar modelos determinísticos que permitan evaluar el aislamiento frente a ruido de impacto para diferentes tipos de forjados. Estos modelos abordan el problema mediante una ...
  • Pushing SEA beyond its limits: a model for real building structures 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2013)
    Text en actes de congrés
    Accés obert
    The main challenge for models of building acoustics is being able to consider all the geometrical and physical details of real structures with a reasonable computational cost for high frequencies. The SEA (Statistical ...
  • Sound transmission through double walls: statistical and deterministic models 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2012)
    Text en actes de congrés
    Accés obert
    Double walls are increasingly used in construction. Due to this, there is interest in reliable models of their sound insulation for the frequency range reguired in regulations (50-5000Hz). These models can be either ...
  • The finite layer method for modelling the sound transmission through double walls 

    Díaz Cereceda, Cristina; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2012-10)
    Article
    Accés obert
    The finite layer method (FLM) is presented as a discretisation technique for the computation of noise transmission through double walls. It combines a finite element method (FEM) discretisation in the direction perpendicular ...