The Modeling Simulation And Optimization Of Binocular Inflatable Shock Absorber Based On AMESim

The gas-precharged dual-sleeve shock absorber with multiple valve platesof a passenger car is submitted to study in this paper. A sophisticate simulationmodel is built based on the mathematical model of the given shock absorber.In this paper, first a FEM model of the multiple valve plates in the shockabsorber is built using Abaqus considering the non-liner features in thedeformation of the valve plates. The deformation curve with varied force appliedon the valve plates is acquired in abaqus. Further, an advanced simulation modelfocusing on the entire shock absorber system is built in AMESim using the datagathered in the previous simulation in Abaqus. The simulation indicates thatthe error in the velocity performance curve and the indicator diagram acquiredfrom the model is less than8%compared with those from the testing data, whichcan be tolerated in engineering. In the next part, the affection on theperformance of the shock absorber caused by gas resilience, piston apertureand liquid-filled piping is studied, the simulation model can be used as aperformance forecast in the design of the shock absorber.With the optimizationdesign software Isight integrated in AMESim, a set of important performanceparameters of the shock absorber, which latterly considered as optimizationdesign variables, has been acquired after DOE analysis, finally the Pointersolver in Isight is used for design optimization. The result shows that, thedamping force curve fits well with the target curve after optimization. Comparedwith the traditional method, the new method shortens the course of repetitivetrials and error-mending in the optimization of the damper valves parameters,which makes it a more efficient method. In the last, in order to shorten thecalculation time of simulation and optimization process, this paper discussesthe use of approximate mathematical model to replace the original shock absorberAMESim model method, the practice showed that the calculation time is greatlyreduced than the original.Binocular inflatable shock absorber is only in recent years a new type ofshock absorber, due to its low noise, low cost, compact structure, productshave good consistency etc have been widely applied in passenger cars.At present,the domestic study of this kind of type of shock absorber is less, the influenceof the absorber performance key parameters (especially valve system parameterdesign) has certain guiding significance.