Modeling and stress study of gantry crane boom based on multibody dynamics

In order to determine the structural strength and load carrying capacity of the boom, a multi-body dynamic model of the gantry crane is established. Simulate the complete workflow under the maximum lifting mass, and get the dynamic load of the gantry crane boom; a finite element model of the gantry crane boom is established to analyze the mechanical properties of the boom under the dynamic load, which determine the change rule of the stress of the boom under various maximum load conditions. The results show that the structural strength of the gantry crane boom reaches the design requirements.Propose a reasonable cross-section optimization of the boom structure to improve the strength of the boom to reduce the stress. Finite element analysis of the optimized boom verifies the feasibility and reasonableness of the optimization method. It is necessary to analyze the stress change of the gantry crane under dynamic load by multi-body dynamics and finite element to determine the safety of the boom.