6. Conclusion
A quarter car test rig was developed to practically evaluate and analyze the influence of the various parameters individually as well as of their interactions, on ride comfort and road holding. Experimental models have been developed for RC &RH which mathematically define the relationship between ride comfort, road holding and a variety of steering geometry and suspension parameters. The model exhibits an R-sq value of 96.21% for RC and 97.99% for RH along with a R-sq (pred) value of 91.98% and 92.88% for RC and RH respectively, which denotes the credibility and predictability of the model over the sample range. Apart from obtaining an optimum set of all the parameters for the respective responses, the flexibility of the response optimizer enables the suspension design engineer to pinpoint upon the near optimal combination for a pre-specified set of variables. This work also helps to demarcate those input variables which have to be granted more attention while designing a suspension system as per their sensitivity.