The Integral Type Body Research On Active Wheel Electric Vehicle By Magnesium Alloy

Active wheel electric vehicles has its own unique structural characteristics as it has smaller size and lighter weight instead of general motors. Finite element method has been applied widely in the automotive industry cause it can shorten the R&D cycle as well as save the R&D costs. It has been proved that it is very effective to use finite element method to analyze the structure of car body. Through static analysis of the car body's structure, its strength, stiffness and other structural characteristics can be seen. It will be helpful to obtain the condition of stress distribution and deformation of the car body. That will provide the basis for the design and production in the following time. As a lightweight, magnesium alloy material should be applied to the car. The fact is true. How to use magnesium alloy and other new materials wider to help automobile lighten weight will be the direction of development in future.This paper chooses urban office workers as the main object to design a kind of two-seat active wheel electric vehicles. First, we design suitable body model based on its market position and structural features of active wheel electric vehicles. Second, we establish the body frame model in the CATIA platform, and use the finite element module in CATIA for the integral type body frame to carry on the grid division, process boundary condition and assign the load. Then, based on the actual movement operating mode, we have carried on the empty curving operating mode, the full load curving operating mode and the reverse operating mode computation analysis, and discovered frame's structural property as well as the weak link through the finite element analysis. At last it turns out that this body model basically meets requirements. This paper also analyzes the status of integral body which uses magnesium alloy and finds that In the reverses operating mode, the local stress is oversized, need to improve the structure. This makes some of the work for the design of car body structure of active wheel electric vehicle in the future. It also gets some guidance data in use of magnesium alloy material for reference.