Topology Optimization And Simulation Molding Process Simulation Of Aluminum Alloy Swing Arm

The swing arm,as an automotive unsprung mass,can significantly improve people's driving comfort and handling stability.However,in the lightweight design of the swing arm,its strength,stiffness,and other parameters may be reduced.At the same time,the production process of the swing arm is also directly related to the performance and service life of the swing arm,which seriously threatens the handling and safety of the car.To solve this problem,based on the swing arm sample of the automobile suspension,the research on the simulation of the swing arm topology optimization and the forming process is carried out.The main contents are as follows:1)According to the proposed lightweight requirements,the Opti Struct topology optimization study was performed on the swing arm model.Combining the optimization results with the actual design experience,the final swing arm model was determined.Finally,the finite element method was used to verify that the model satisfies the parameters such as strength and stiffness.2)Through the analysis of the geometric characteristics of the swing arm,the aluminum alloy swing arm forging production process plan was selected and formulated.Raw blanks,blanks intermediate frequency furnace heating,roll forging blanks,flattening and shaping blanks,precision forging forming,punching trimming.3)According to the mold design theory and industrial production experience,innovative design is carried out for roll forging dies and flattening or shaping dies,and the stamping dies are improved.4)The finite element software was used to simulate the swing arm forming process,and the finite element model of the swing arm forging process was established.According to the simulation results,the velocity field,stress strain field,overlap angle and minimum spacing of the forging process of the metal blank were analyzed.The results of the study show that simulated forgings do not suffer from defects such as overlap,lack of material,and cracks.5)Through the actual industrial forging production and swing arm related experiments,the rationality and feasibility of the aluminum swing arm forging process and mold design were verified.