Experimental pseudo-equivalent deterministic excitation method extension for low frequency domain applications

Area of Science:

• Transport engineering
• Structural dynamics
• Aerodynamics

Background:

• Flow-induced vibrations negatively impact system operation and response in transport engineering.
• Wind tunnel testing is crucial for evaluating structure design and material performance but is time-consuming and expensive.
• Alternative methods are needed to accelerate testing and improve uncertainty analysis for turbulent boundary layer excitation.

Purpose of the Study:

• To extend the eXperimental Pseudo-Equivalent Deterministic Excitation method (X-PEDEM) for low-frequency domain applications.
• To investigate the applicability and analyze the properties of X-PEDEM in the low-frequency range.
• To assess the reliability of the extended X-PEDEM method under various numerical conditions.

Main Methods:

• Extension of the eXperimental Pseudo-Equivalent Deterministic Excitation method (X-PEDEM).
• Application of X-PEDEM in the low-frequency domain.
• Numerical validation using different panels, boundary conditions, and flow velocities.

Main Results:

• The study investigates the applicability of X-PEDEM in the low-frequency domain.
• The properties of the extended X-PEDEM method are analyzed.
• Numerical testing confirms the reliability of X-PEDEM under diverse conditions.

Conclusions:

• The extended X-PEDEM method shows applicability in the low-frequency domain for simulating structural response to turbulent boundary layer excitation.
• The method provides a potentially more efficient and data-rich alternative to traditional wind tunnel testing.
• Numerical validation supports the reliability of X-PEDEM for transport engineering applications.