Finite Element Analysis And Optimization On Key Part Of120T Metallurgical Heavy-Duty Vehicle

Metallurgical heavy-duty vehicle is an important transportation equipment in metallurgy industry, and performance of its loaded parts is crucial to the overall safety and reliability of the vehicle. The120T metallurgical heavy-duty vehicle discussed in this paper has been put into use in Anshan Iron&Steel and other companies. It has some problems in operating, for example, the suspension thrust mechanism breaks partly or wholly, certain tyres wear severely, etc., so it is necessary to conduct in-depth study of its main loaded parts to prevent and solve safety problems.Based on the above concerns, by adopting a method that combines theoretical analysis, simulating calculation and experimental research, finite element analysis and optimization on key part of120T metallurgical heavy-duty vehicle was conducted to analyze the security and stability of frame and to solve the problems about suspension thrust mechanism. The specific work and conclusions are as follows:Based on finite element theory, the finite element models of the vehicle’s frame and suspension thrust mechanism were built according to its structural and mechanical stress characteristics.Finite element analysis of the vehicle’s frame and suspension thrust mechanism in the case of climbing10%slope with120T loads was conducted, and did research on the performance of suspension thrust mechanism under the condition of going through vertical obstacle when climbing slope. The results show that the frame and suspension thrust mechanism’s bearing capacity meet the operating requirement, but the stress of suspension thrust mechanism exceed the yield limit in the process of going through obstacle.Through modal analysis of the vehicle’s frame and suspension thrust mechanism, their natural frequency and vibration modals were obtained, which shows that their vibration stability is good.The optimization solution of parallel rod mechanism and trapezoidal rod mechanism was put forward according to its existing problems, and then do analysis to compare their static and dynamic characteristics. The results show that the stress and deformation of both the two optimization schemes can meet the operating requirements, and their structural stability is good.Stress test experiment in which the vehicle climbed10%slope with full load was carried out, and then compared the results with that of finite element simulation, the two results are basically concordant, which validated the correctness of finite element modeling and calculation.