Vibration Response Law of Aircraft Taxiing under Random Roughness Excitation

Understanding the vibration response patterns of aircraft taxiing under runway roughness excitation is crucial for design and performance evaluation. In this paper, we establish pavement models both asphalt concrete surfaces, taking into account their unique structural characteristics. We construct a six-degrees-of-freedom model using multi-rigid-body system dynamics theory employ pseudo-excitation method to examine influence types on steady at constant speeds. Furthermore, analyze non-stationary during takeoff landing instantaneous frequency function with space frequency. Lastly, explore effect stochastic parameters Monte Carlo method. Our findings reveal that power spectrum differs between pavements, established in paper demonstrate strong fit (R2 > 0.95). The type has relatively minor impact spectral density distribution response, suggesting same can be used pavements when high accuracy not required. varies across different motion attitudes, being significantly larger than takeoff. Among parameters, randomness sprung mass most substantial potentially causing variation coefficient dynamic load front gear exceed 0.11. Tire stiffness comes next, which lead main reaching 0.07. results have guiding role optimizing structure ensuring performance.