Vertical Deformation Optimization for the Screed of Pavers Based on ABAQUS and Isight

During the paving process, the posture of the screed is the main factor determining the evenness of the road surface. As the bottom of the screed is in direct contact with the high-temperature asphalt mixture at work, the bottom plate is heated and expands. This results in vertical deformation of the screed with upward heat deformation characteristics at both ends, thereby reducing the quality of the pavement. To minimize the deformation of the screed, a vertical deformation optimization method for the screed of pavers is proposed, which aims to apply appropriate forces to the bracing bars so that the thermal deformation could be improved. In this method, ABAQUS software is used to establish the thermal deformation simulation model between the forces of the bracing bars. Isight software is used to integrate ABAQUS for sensitivity analysis between forces and deformations and construct the approximate model, which substitutes the simulation model for optimization rapidly. Through the simulation results, the vertical deformation is obviously reduced and the flatness of the screed is significantly improved after optimization.