Discussion of “Prediction of pavement friction coefficient based on dynamic friction test simulation”

Abstract

This discussion critically evaluates the paper "Prediction of Pavement Friction Coefficient Based on Dynamic Friction Test Simulation" by Luo et al. While the proposed finite element (FE) modeling framework offers a novel method for predicting the coefficient of friction (COF) using the FE (finite element) model, it exhibits significant limitations, particularly in its treatment of adhesive and hysteretic friction components, leading to potential underpredictions of COF. The inappropriate application of the Persson model raises further accuracy concerns, especially at higher speeds. This discussion advocates for back-calculation methods and emphasizes the need for friction test validation. Future research should aim to enhance the model by incorporating additional factors such as temperature and material properties for improved reliability.