The Optimization For The Ride Comfort Of Vehicle Based On The Robust Design Of The Shock Absorber

As an effective method to improve product quality, robustness optimization has beenwidely used at engineering applications. It also has drawn increasing attention in automotivedesign.In this paper, take the shock absorber as the research object which is an importantcomponent of vehicles. A multi-domain shock absorber model was built with AMESimwhich was used widely in engineering field. Recent researchs in the field of shock absorber’srobust design optimization is based on the joint system which is constructed with thesoftware of AMESim, iSIGHT, MATLAB and ADAMS, and take the vehicle rideperformance as the target.A thorough analysis of the damper system design and vehicle ride-related technologieshave been done on basis of the systemic review of the development and current researchstatus of robust design. An in-depth analysis have been done on the geometric structure andworking principle of the typical shock absorber. A shock absorber model was established inthe multi-domain environment, and tested by the standard experimental conditions. Therobust optimal designs have been done respectively based on the Taguchi robust designmathods and the σ level method, and compared the advantages and disadvantages of bothmethods. With the different results of those two methods, the analysis of the causes has beengiven.A co-simulation system which is constructed with the muli-domain modelingenvironment and multi-body dynamics simulation environment has been established for thestudy of vehicle dynamics. Taking into account the characteristics of the vehicle ride comfortstudies, the parameters of multi-domain shock absorber model in the1/4vehicle weredirectly applied to the original co-simulation system. The performance of robust design inthe vehicle envienment has been fully reflected by scan all the noise facters. The resultsshow that the shock absorbers designed by the robust optimum design can significantlyrduce the fluctuation range of the vehicle mass acceleration changes with the noise. Thevehicle ride performance was improved, more robustness. Those research of robust designprocess can be effectively applied in automotive engineering design and achieve goodresults.