Finite Element Analysis And Lightweight Study On Heavy Truck Driving Axle Housing

As the main carrying and transferring component of heavy motor truck, thedriving axle supports the weight of vehicle, and transfers the load to wheel. Thestructure of the driving axle housing directly affects the vehicle performanceproperties and the car working life, therefore it should have sufficient stiffness andstrength. The finite element method emergence and development promote the level ofcomputer-aided design. By the finite element method for the driving bridge shellstructure of performance analysis, considered to optimize the structure in the designprocess, it has great significance to reduce axle shell weight, improve properties of thevehicle, and lower manufacturing costs.The general contents of this paper include the following: First, simplificationwith modeling theory and the use of conditions on the drive axle housing establishedthe three-dimensional model of drive axle housing by modeling software. The finiteelement model was built with finite element analysis software. The driving axlehousing deformation and stress distribution were solved in four typical conditions, gotthe result of the greatest displacement value2.259mm, per meter track changing value1.215mm/m, the maximum stress value312.6Mpa. After free modal analysis, extractthe first12vibration mode, natural frequency valued between the76.995-532.131Hz.Through transient response analysis, proved it had good dynamics. The fatiguestrength of drive axle housing was calculated, under the survival rate of50%and99.9%were in line with national standard, lightweight design could did. Finally,optimized it with optimization module. The results showed that the axle housingquality had been significantly reduced, the total weight of the axle housing135.248Kgreduced to117.39Kg, reduced by13%, the maximum stress was closer to allowablestress, it had a good significance of practical engineering applications.