Dynamic Optimization And Reliability Research Of Truss Gantry Crane

A FEM (Finite Element Method) model was built based on ANSYS. Scope of application was given after discussing the difference between Timoshenko and Euler-Bernoulli beam theory. Extreme value and stress distribution were showed during the static analysis. Limiting condition was studied for lightweight design of crane structure.The model was optimized by interactive decision-making algorithm which was considered as a new way to promote both dynamic performance (5.98%) and decrease in mass (10.9%) based on key modal frequency. The stress distribution was also optimized as a result.Effect which caused by impact vibration was discussed during transient dynamic analysis. Rising-impulse coefficient was verified after comparing with traditional algorithm.The function was given between reliability and loading cycles after introducing the strength failure method. As a result, the reliability modal was built during the theoretical analysis by FEM and APDL (ANSYS Parametric Design Language) programming language. Reliability analysis was done considering the effect of impact load, moving load and multiple loads.