Taguchi Method (DOE) Based Performance Optimization of a Three Link Rigid Axle Passenger Car Suspension Using MBD Simulations TATA Motors Ltd , India

Format:

Conference/Event

Author/Creator:

Paluskar, Paluskar, author.

Contributor:

Vaidya, Rohit

Conference Name:

SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

This paper describes dimensional synthesis, analysis andperformance optimization of a three-link rigid-axle suspensionsystem. This suspension architecture has two longitudinal links andpanhard rod as a transverse link. In case of rigid axle with threelinks, roll stiffness is primarily governed by springs, anti-rollbar, suspension link dimensions and its orientations. Because ofsuspension architecture, the bushings connecting the longitudinallink to axle will also contribute to the suspension roll stiffness.Typically, this contribution is comparable to the contribution dueto the suspension springs. Hence, this paper explores the processof reducing roll stiffness of three-link rigid-axle suspension byidentifying and changing high impact parameters. In the multi-stepprocess, the first step is to evaluate the kinematics andcompliance performance. This analysis is performed using"ADAMS®" - the multibody dynamics analysis software. Outof all kinematics performance parameters, roll stiffness is one ofthe major parameters which has significant effect on ride andhandling characteristics of vehicle. Handling performance of avehicle is a critical performance attribute defining anddifferentiating a vehicle from its competitors.Typically, with such suspension architecture, problem of excessrear roll stiffness is common. Reduction in spring stiffness is notan option as its specification is governed by other vehicleperformance viz. ride comfort, load capacity, et cetera Hence, adetailed study has been performed to understand the governingdesign variables and its sensitivity to the performance metrics (inthe present case, the roll stiffness). The prominent designvariables that have been studied are Side view axle bushseparation, Side view longitudinal link inclination, and Top viewaxle side bush separation (between LH and RH). With these designvariables DOE is performed using Taguchi Method of orthogonalarray. The results of this study have been presented to aidintuitive inferences. The key benefit of this study is with minimumnumber of experiments understanding sensitivity of the governingdesign variables and therefore a definite dimensional synthesisprocedure to design a required suspension performance

Notes:

Vendor supplied data

Publisher Number:

2011-01-0734

Access Restriction:

Restricted for use by site license