Study on structural strength of paver screed based on finite element method

Abstract

In order to ensure the rationality of screed structure design and reliability of structure strength, the structural finite element model of paver screed was established with the aid of APDL language. The static and dynamic characteristics of the screed are analysed based on the finite element method. Results show that maximum principal stress of screed in the bar is 113Mpa, maximum deformation is 1.82mm, the screed meets the normal demand both in intensity and rigidity. Natural frequencies and according vibration model of screed were obtained from finite element modal analysis, the first-order natural frequency in a vibrator adjustable frequency range, so working frequency should avoid the first-order natural frequency, and the change rule of strain and stress amplitudes of screed with the vibration frequency was obtained from harmonic response analysis. The structural static and dynamic analysis of screed provides the basis for the structure design and the adjustment of construction parameters.