Vibroacoustic analysis of asphalt pavement responses to moving loads and attached mass-spring-damper systems

Abstract

This innovative study develops a new analytical model to investigate the dynamic responses of asphalt pavements combined with attached mass-spring-damper systems under moving loads. Unlike existing methods that rely on finite element (FE) approximations, an exact solution for the coupled vibroacoustic behavior is proposed using first-order shear deformation plate theory (FSDPT), Hamilton's principle, and Fourier-Laplace transforms. The acoustic pressure is first predicted using Rayleigh integral analysis. Afterwards, the responses are transformed into the time domain using Durbin's numerical inverse Laplace transform strategy. The model utilizes Rayleigh integral analysis to generate innovative predictions of acoustic pressure and uses numerical inversion to accurately determine transient responses in the time domain. The suggested technique has been extensively validated against data from prior research and COMSOL Multiphysics® FE simulations, which confirms its correctness. Parametric analyses provide new insights into the effects of damper and spring coefficients, velocity, and loading frequency on the pavement's vibroacoustic behavior and the time-history response of the attached mass-spring-damper systems. Notably, the model offers fresh theoretical insights into the complex interplay between system parameters and the pavement's vibration and noise patterns.