Abstract:
Took the back “L” beam of a stacker-reclaimer as an example, whose section is composed of multiple planes. The stress distribution in the section of beam was simulated using Solidworks, ANSYS and Hypermesh, and the effects of mesh type and mesh size on the simulation results were investigated. The reason for crack initiation at the section was discussed based on the simulation results. The conclusions are as the following: 1) the original design of the structure is the main cause of the crack, while the reforming is not since the maximum stress decreases after reforming; 2) The unbalanced moment at the pin connection of the beam after reforming is the direct cause of the crack initiation and propagation; 3) The repairing plan is proved to reduce the stress at the crack initiation location and enhance the structure fatigue strength.