Abstract
The main aim of this study is to evaluate the individual and interactive impact of steering geometry and suspension parameters on ride comfort and road holding throughout the predetermined loading range. A series of experimental runs were taken on a quarter car suspension test rig and the readings were analyzed by implementing the fractional factorial method of DOE. Regression analysis and ANOVA quantified the nature and extent of the relative influences of each of these factors and their interactions. Compared to ride comfort, it was found that a lot of interactions involving the steering geometry variables had a significant impact up on road holding. Eventually, a multi-objective model for evaluating ride comfort and road holding on the basis of various parameters was proposed. The main effects and interaction plots were plotted and corresponding inferences were verified by plotting contour and surface plots of the significant interactions for both ride comfort and road holding.
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