Driver's Seat Strength Characteristic Simulation Analysis And Optimization

With the development of modern technology, automotive industry, automotive comfort and safety of people pay attention to the gradual, and seats for direct contact with human body parts, and its importance is self-evident. Simulation on the strength of seats, its theory and methods have been widely recognized. At the same time, to meet the premise of security, how to improve the process of driver car seat and as much as possible to reduce the quality, has become the focus of the industry.This paper introduces the finite element theory and the simulation some of the ways, and then the car driver's seat for the static strength properties of the finite element simulation, and describes the use of the finite element method the accuracy and reasonableness. In addition to considering their strength of car driver's seat, the paper also considered in the steering, braking, acceleration, bumpy four conditions, the seat of fixed points (and the floor near the connector) and the forces to study whether to meet Strength requirements. On this basis, simulated laboratory shaking table, the constraint on the seat modal analysis first, and then swept three directions XYZ vibration analysis to examine whether they meet the requirements of vibration strength.Through access to a large number of domestic and foreign literature, learning and compare the existing framework of the optimization process the cab car, we use the optimization method, the use of seat structure Hyperworks series of software to do a similar topological analysis to optimize and reduce weight Purposes. According to the simulation results of static characteristics, the use of the seat structure OptiStruct software topology optimization and improvement theoretical guidance for the design work was done.In this paper, the simulation analysis has developed as a way of car seats static strength characteristics, including the seat assembly, seat back and headrest for loading and analysis. And based on the theory of vibration, the seat structure in top 5 modes of vibration have been down, the car driver's seat for the reasonable distribution of modes to provide a theoretical basis. The seat part is optimized by replacing some parts of the material on it. In the finite element model after imposing constraints and loads, while according to the set of objective function and optimization constraints, after several iterations, to calculate the optimization constraints and objective function consistent with the optimal solution, and replaced by density cloud validation Optimization Effect. The decline of the overall structure quality after the Topology optimization has been to 18.59%.