APPLICATION OF FEM AND SEA IN PREDICTING VIBRO-ACOUSTIC BEHAVIOR OF A FLAT RIBBED PANEL STRUCTURE

摘要

In today's market the passenger comfort is driving the interior design of the aircraft. The basic requirement of the comfort is low noise and vibration environment. Considering the effect of extra mass on the performance of the aircraft and cost to improve the comfort later in the program, the fuselage structure must be designed for low noise at the early stages of design. This highlights the need for better design tools that can be used with a high confidence to design the cabin for acoustics and vibration comfort.