Essays about: "structure-acoustic"

Found 3 essays containing the word structure-acoustic.

1. 1. Structure–Acoustic Interaction Between Vehicle Floor Panels and Carpets – Numerical Simulations and Measurements

   University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

   Author : Aya Karim; Jesper Brindhag; [2021]
   Keywords : Structure-acoustic; Acoustic; Dynamic; Floor panels; Interior carpets; NVH; FEM; Finite element; PEM; Porous elastic; Noise radiation; Interior-noise; Vehicles; Vibration; Structure-borne noise; Technology and Engineering;

   Abstract : An attribute that is highly valued amongst vehicle customers is low interior-noise levels when a vehicle is in use. Much of the interior-noise is believed to stem from the vibrations of floor panels in vehicles. READ MORE

3. 2. Vibro-acoustic analysis of a satellite reflector antenna using FEM

   University essay from Institutionen för fysik

   Author : Johannes Sikström; [2011]
   Keywords : finite element method; FEM; acoustics; vibrations; vibro-acoustic; analysis; NASTRAN; PATRAN; satellite; fluid-structure; fsi; structure-acoustic; random analysis;

   Abstract : The acoustic environment generated during launch is the most demanding structural load case for large, lightweight satellite reflector antennas. The reflector is exposed to extremely high sound pressure levels originating from the structural excitation of the rocket engines and exterior air flow turbulence. READ MORE

4. 3. Structure-Acoustic Analysis using BEM/FEM; Implementation in MATLAB

   University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Väg- och vattenbyggnad (CI)

   Author : Fredrik Holmström; [2001]
   Keywords : Vibro-Acoustics; CALFEM; Coupled; BEM; FEM; Acoustics; Implementation; Technology and Engineering;

   Abstract : This master dissertation describes the process of implementing a coupling between the boundary element method (BEM) and the finite element method (FEM) for three dimensional time harmonic structure-acoustic models in CALFEM, which is a finite element toolbox to MATLAB. Since no boundary elements earlier have been represented in CALFEM the development and implementation of constant and linear boundary elements is also described in this thesis. READ MORE