Finite Element Analysis And Lightweight Design For Heavy Vehicle Frame

With the WFG9280 heavy vehicle frame as subject, the FE(finite element) analyses were performed to investigate its static and dynamic characteristics, and further a reasonable project for light-weight design was put forward. In the present thesis, the following works were mainly carried out.(1) The 3D FE model of the WFG9280 vehicle frame was built through the CAD/CAE software of UG and ANSYS, and the static strength analyses were carried out for the vehicle frame under four work conditions, i.e. bending, torsion, braking and swerve;(2) The dynamic characteristics of the vehicle frame were analyzed through the FE method, and further the first ten vibration modes, as well as the transient response of the vehicle frame under dynamic load, were given;(3) The Visual Basic langue and the APDL enclosed in ANSYS were used to develop a software module for structure optimization design, and further, in order to reach the aim of light-weight, the vehicle frame was optimized through the module under stiffness and strength constraints;(4) The strain tests of the vehicle frame were performed to verify the present FE results.The research work in this thesis is very helpful for the improvement of the heavy vehicle structure design and optimization.