A finite element analysis method for leaf springs of electric drive axle systems of new energy vehicles
By adopting a simplified rectangular cross-section beam unit model in the electric drive axle system of new energy vehicles, the problem of inefficient calculation efficiency caused by complex contact and large deformation in the traditional leaf spring modeling method is solved, and the strength and durability analysis efficiency of the electric drive axle system is improved.
Patent Information
- Application Number
- CN202111038533.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-09-06
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2041-09-06
AI Technical Summary
When analyzing the electric drive axle system of new energy vehicles, the traditional leaf spring finite element modeling method does not take into account the large deformation of the steel leaf spring and the complex contact between the sheets, resulting in low convergence efficiency of the leaf spring and low calculation efficiency of the strength and durability of the electric drive axle system.
A simplified modeling method based on computer-aided engineering (CAE) technology and finite element method is adopted to obtain the basic parameters of the leaf spring to establish a model of simplified rectangular cross-section beam unit, including the hard point of the front roll ear, the hard point of the rear hanging ear, and the center point of the connecting area between the two and the bridge, and an equivalent beam unit is established between the projection point and the hard point to verify the stiffness comparison of the model.
The convergence efficiency of the leaf spring and the strength and durability calculation efficiency of the electric drive axle system are improved, and the calculation efficiency of inefficient caused by complex contact and large deformation in traditional methods is solved.