Development And Study Of The Suspension Optimization Software Based On ADAMS

The suspension system is the most important factor for the vehicles smoothness and the tire behavior. In order to enhance the vehicles'smoothness and reduce tire's attrition, different vehicles require different suspension system to match. At present, many vehicles'suspension systems imitate other vehicles'suspension systems, especially many domestically produced vehicles install on the same type suspension system of other vehicles', so that the suspension parameters and cannot match with the vehicles, this will not only seriously affect smooth running of vehicles', but also increase the tire's crossway slide quantity, intensified the tire's attrition, reduce the tire's service life.In view of the above questions, this paper takes the multi-body dynamics theories as foundation, by using View module which belongs to the mechanical system dynamics simulation software ADAMS to establish dummy specimen model for McPherson suspension and Double-wishbone suspension, simulation ,then draw a curve which can stand for the relationship between wheel horizontal slip and wheel alignment parameters with the wheel of change, and analyze how the positioning of the wheel parameters affects the wheel horizontal slip in the process of the wheel beating.Take the wheel horizontal slip as the objective function, and carry on the parametric analysis to McPherson suspension and Double-wishbone suspension for parametric analysis. First of all, carry on the parametric to the suspension essential design parameter. The next apply orthogonal test design method, take the wheel horizontal slip quantity as the optimized goal, then analyze the influence of suspension system primary structure parameters on the wheel horizontal slip quantity. Finally, apply sequential quadratic programming algorithm to carry on the optimization design computation to the suspension system design parameters, and obtain the design parameters when the wheel horizontal slip quantity is smallest according to the optimized result. Using the user interface part of the ADAMS/View module to carry on the re-development to the ADAMS software, establish the optimized software of McPherson suspension and Double-wishbone suspension system. The input of Software is the initial essential design parameters of the suspension, and the output is the essential design parameter after the optimizationExperiment on McPherson suspension, Measuring the volume of the horizontal tire slip when the wheel up and down, then compare with the simulation result, confirm the accuracy of McPherson suspension that established.