Structural analyses

Structural analyses are a suitable instrument for the exact determination of individual vibroacoustic properties. To determine parameters such as absorption, reflection or transmittance, analysis objects are artificially excited.

The transfer functions result from the ratios of response signal to excitation signal. Typical excitation types are:

Shaker excitation
Impulse hammer excitation
Airborne sound excitation

Animation of Vibration Modes

An important tool is the representation or animation of vibration modes, which can be done from raw time data or frequency selective. Operational Deflection Shape analysis (ODS) is the animation of directly measured signals. However, transfer functions (normalized accelerations) or modally disassembled vibration modes can also be animated.

Transfer Path Analysis

Response signals are comprised of typically components from different sources or paths. To investigate this composition, methods of transfer path analysis (TPA) methods are used. Since the concrete tasks or questions can be very different, different TPA methods have been established.

Operational Transfer Path Analysis (OTPA)

On the structural dynamics side, the OTPA with the PAK software provides insight into the paths by which sound and vibrations within a structure to the receiver in the operational state. In this way, it becomes clear which design measures are expected to lead to the greatest improvement in sound and vibration behavior.

Sensitivity Analysis

The sensitivity analysis in the PAK software shows immediately which changes in the transmission paths can achieve the desired vibroacoustic behavior.