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Kineto-dynamic Performance Analysis of Vehicle with an Asymmetric Suspension Damper using a Roll-Plane Model

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Kineto-dynamic Performance Analysis of Vehicle with an Asymmetric Suspension Damper using a Roll-Plane Model

Balike, Krishna Prasad, Rakheja, Subhash and Stiharu, Ion (2013) Kineto-dynamic Performance Analysis of Vehicle with an Asymmetric Suspension Damper using a Roll-Plane Model. International Journal of Vehicle Performance, 1 (1). pp. 69-91. ISSN 1745-3208

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Abstract

This paper concerns with the study of influences of damper asymmetry together with the suspension kinematics and tire lateral compliance on the kineto-dynamic responses of a roll-plane half-car model. Such coupled analysis of kinematic and vertical and roll dynamic measures of the vehicle involving asymmetric suspension dampers has not been reported in the literature. A 4-DOF, roll-plane model of the road vehicle employing a double wishbone type suspension comprising a strut with linear spring and asymmetric damper is formulated for the analyses. The influences of asymmetric dampers are studied by comparing the sprung mass vertical acceleration, chassis roll angle and the dynamic tire forces, and the left- and right tires camber angle variation responses of the model with asymmetric dampers with those of the model with an equivalent linear damper under bump and pothole inputs. The influences of damper asymmetry are also investigated under rounded-step lateral excitations. The results of the study suggested that the responses are complex functions of damper asymmetry ratio, defined as the ratio of damping coefficient in rebound to that in compression, vehicle forward speed and type of input. The study further suggests that a very low compression mode damping is undesirable from both ride and handling dynamic perspectives.

Divisions:Concordia University > Research Units > Concordia Centre for Advanced Vehicle Engineering
Item Type:Article
Refereed:Yes
Authors:Balike, Krishna Prasad and Rakheja, Subhash and Stiharu, Ion
Journal or Publication:International Journal of Vehicle Performance
Date:28 November 2013
Digital Object Identifier (DOI):10.1504/IJVP.2013.057786
Keywords:Automotive suspension, Kineto-dynamic model, damper asymmetry, suspension kinematics, tire lateral compliance, vehicle ride and handling analysis
ID Code:974133
Deposited By: KRISHNA PRASAD BALIKE
Deposited On:29 Nov 2013 14:50
Last Modified:18 Jan 2018 17:37
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