Stress Loading Analysis for Quayside Container Crane Draw Bar Based on VMD-Weibull Distribution

Abstract

The load distribution characteristics of quayside container crane (QCC) draw bar system is of great significance for fatigue analysis, life assessment and reliability calculation of metal structures. In order to describe the load distribution characteristics accurately, a method for extracting the characteristic parameters based on the VMD-Weibull distribution was proposed. Firstly, use the Wiener filtering feature of VMD to perform filtering processing. Then use the cubic spline interpolation envelope method to reconstruct the data, and performs Weibull distribution modeling on the reconstructed data to extract the scale parameters and shape parameters. Compared with the maximum entropy probability density curve, the stress loading is consistent with the Weibull distribution. At last, evaluate the draw bar and predict the development trend of the draw bar performance.