A numerical model for vibration analyses of an aircraft partition with parameterized interface properties

Aircraft structures are subjected to environmental conditions that can cause critical damage. The vibrational behavior of cabin structures can be influenced by adjusting the mechanical properties at the connections. Many possible mechanical properties lead to a large number of necessary investigations. Therefore, a dynamic model of a partition with parameterized interface properties in frequency domain is presented. Physical tests are performed on a vibration test rig to determine the internal damping of the structure. The vibration amplification depending on different interface properties is determined by amplification functions over several resonance frequencies. The resulting behavior is analyzed and its vibration reduction over all interface properties is determined. With the model presented, the possibility of reducing vibrations through adjustable impedance elements can be predicted. Requirements for physical examinations and properties for vibration-optimized connections in aircrafts can be derived from this.