The Structural Analysis And Optimization Design On Front Axle Of Heavy Tractor

In recent years,among the environment of promoting green and recycling economy,more and more countries have been involved in the exploration of lightweight technology.As an important means to improve economic efficiency and achieve the goal of energy saving and emission reduction,automobile lightweight were more and more mentioned in the major conferences.The front axle is the indispensable component of the automobile in the running process,not only provides the steering function,but also an extremely important load-bearing part of the car.In normal driving,many complicated loads affect the front axle,and front axle’s performance is directly related to the vehicle’s overall performance.As the same time,the mass of automobile front axle is one of many larger mass parts,thus reducing the mass of front axle has a very important meaning for the automobile lightweight.On the premise of guarantee vehicle performance unchanged,analyze the front axle of Heavy Tractor with structure analysis and optimization design is of great significance to reduce the vehicle quality.The following is the main content of the study:(1)According to the heavy truck front axle’s specific conditions in the actual driving,we use Pro-e to establish a three-dimensional model for front axle.And according to the loading characteristics of front axle under the actual conditions,we conducted the theoretical calculation for it.Analysis by the ANSYS Workbench software on the front axle in the static maximum vertical force conditions,the maximum lateral force conditions and emergency braking conditions,obtained the stress nephogram and displacement nephogram under three different conditions.(2)Analysis of free modal and constrained modal of heavy truck front axle by using ANSYS Workbench software.From the results,we can judge that the minimum of heavy truck front axle assembly modal is 175.11HZ,not in the range of 0-5 OHZ,which means that resonance excitation will not appear in the role of incentives,and the front axle’s structure design is reasonable.(3)To optimize the design of the front axle by using Shape Optimization module in Workbench ANSYS.Under the requirement of the strength and stiffness of the front axle,reduce the quality of the front axle and improve the utilization efficiency of materials as much as possible.After the optimization,the statics analysis and modal analysis was carried out on the front axle to test the safety and reliability of the optimized model of front axle.