Analysis And Optimization Of Dynamic Performance Of Truck Crane Frame In Working Condition

In recent years,as China’s economy continues to rise steadily,driven by the demand for infrastructure construction,such as wind power projects,municipal projects,transportation projects,petrochemical projects,China’s truck crane industry has gained rapid development,has become an indispensable lifting equipment in industrial construction,its development has also received wide attention.Due to the changing operating environment of truck cranes,involving more operating conditions,so the force of its frame is more complex,and its frame structure characteristics have a greater impact on the performance of the machine.Most of the previous design of truck crane frame structure is based on simplified models and past experience calculations,the entire development process is long and difficult to design a reliable product to meet the needs of modern markets.Before the product is put into production and testing using finite element simulation technology to analyze and optimize its structure can greatly reduce the design cycle and production costs,and to evaluate its specific performance.The frame structure of a truck crane is taked as the research object,and thoroughly studies the static and dynamic load-bearing performance of the frame to lay the foundation for the structural optimization design of the frame in this paper.First,according to the parameters of the engineering drawings,the three-dimensional model of the truck crane frame was established in the parametric modeling software,and then imported into the finite element pre-processing software for pre-processing,including connection relationships,bolt simplification,mesh division,etc.,to establish the finite element model.Then,according to the model crane performance table and the actual operating conditions,select the appropriate study conditions,respectively,in the boom fully retracted and fully extended under a total of six operating conditions,using finite element analysis software on the frame of the static,dynamic analysis,the frame structure of the stress,strain distribution to explore,assess the static and dynamic load-bearing performance of the frame.Based on the results of the static and dynamic analyses,the weak points and material redundancy of the frame design were identified,and a hybrid optimization algorithm combining the adaptive simulated annealing algorithm and the sequential quadratic programming method was used to optimize the frame structure,resulting in a significant reduction of the frame mass.In comparison with the performance of the frame before optimization,the lightweighting is achieved while the performance of the whole machine is guaranteed,which proves the effectiveness of the engineering optimization in this paper.The whole research process of this paper has certain significance and engineering value for the optimization design of the same type of crane frame structure.