The MDE method for aircraft cabin interior noise prediction
Abstract
This paper describes a finite-element method, based on the matrix difference equation (MDE) method of Denke (1979), for predicting aircraft-cabin interior noise, using coupled structural-acoustic models to represent the fuselage structure and the air inside. In this method, the problem of modeling coupled structural-acoustic systems is solved by the FEM, employing displacements as the unknown variables. The method is shown to be efficient enough to be employed as a design tool.
- Publication:
-
SAE, Aerospace Technology Conference and Exposition
- Pub Date:
- September 1989
- Bibcode:
- 1989saea.conf.....D
- Keywords:
-
- Aircraft Noise;
- Difference Equations;
- Finite Element Method;
- Noise Prediction (Aircraft);
- Noise Reduction;
- Pressurized Cabins;
- Aircraft Design;
- Circular Cylinders;
- Computerized Simulation;
- Sound Transmission;
- Vibration Damping;
- Acoustics