Finite Element Analysis And Optimization Design Of The Frame Of A Typed Light Truck

Due to the strong environmental adaptability and strong carrying capacity of light trucks,it plays an important role in economic construction and has a very bright market development prospect.As the core component of the entire car,the light-duty frame installs and supports a series of parts,including the engine,cab,cargo box,cargo and so on.At the same time,the light-duty frame also withstands multiple kinds of forces and moments from different working conditions and the working environment is very complicated.Therefore,the quality of the light-duty frame directly affects the performance of the car and the service lifespan of the car body.In this paper,the finite element analysis method is used to analyze the dynamic and static of the frame of a typed light truck.First of all,using UG software builds a solid model of the light-duty frame,then the model file is imported into the HyperMesh software to establish a complete finite element model,this process prepares for the next static dynamic analysis.After completing the above work,the complete finite element model is endowed with the corresponding boundary conditions to simulate four typical working conditions(bending conditions,torsional conditions,turning conditions,emergency braking conditions)for truck frames under full load conditions,and the analytical solution is completed by the OptiStruct solver in HyperMesh software.The static analysis results under various working conditions are obtained,and the calculation results are verified and tested.The low-order free mode of the truck frame is calculated by the OptiStruct solver,and the dynamic performance of the frame is evaluated according to the relevant evaluation criteria of the frame.On the basis of ensuring safety requirements,the two optimization methods are used to optimize the design and improvement of the frame in order to minimize the weight of the frame.Firstly,the size optimization method is used to optimize the weight by adjusting the thickness of each component to achieve weight reduction,and the improved frame is checked to ensure that the stiffness and strength of each working condition are within a reasonable range.After the size optimization,using topology optimization optimizes the beam which has partial smaller stress.According to the optimized contour,the light-duty frame beam structure is improved and the strength is checked once again to ensure the rationality and reliability of the frame design improvement.