Synthesis and analysis of the five-link rear suspension system used in automobiles

Simionescu, P. A.; Beale, David G.

doi:10.1016/s0094-114x(02)00037-x

Cited by 65 publications

(33 citation statements)

References 9 publications

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“…Habibi et al (2008) [11] applied genetic algorithms to the design of linkages based off the McPherson-strut. Simionescu and Beale (2002) [12] and Eberharter (2007) [13] present kinematic synthesis procedures for five-link spatial suspension linkages. Our approach designs the left and right sides of a vehicle suspension as a planar symmetric 12-bar, that is two symmetric Watt I six-bars.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The number of roots can then be reduced even further by use of parameter homotopy of which an implementation is available in the Bertini software package. The idea behind the parameter homotopy numerical reduction method is to solve a system generally once by assigning random complex numbers to the parameters which comprise the coefficients of the polynomial system (12). The number of nonsingular solutions from this general continuation solve is taken to be the maximum number of nonsingular roots of the system.…”

Section: Reduction Of Synthesis Equationsmentioning

confidence: 99%

“…The above reduction shows a maximum of 336 linkage solutions that can be found for a set of synthesis equations (12). However, for a single set of specified chassis and wheel mounting pivots, we can generate four sets of synthesis equations by swapping the values of b and c, and h and k as illustrated in Fig.…”

Section: Linkage Analysismentioning

confidence: 99%

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Vehicle Suspension Design Based on a Six-Bar Linkage

Plecnik

McCarthy

2014

Volume 5A: 38th Mechanisms and Robotics Conference

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A synthesis technique for designing novel vehicle suspension linkages based on the Watt I six-bar is presented. The goal is to maintain near vertical alignment of the wheels to the road during cornering. The complete suspension is analyzed as a symmetric planar 12-bar linkage with ground pivots located at the contact patches. The design procedure specifies the vehicle chassis orientation and the tire camber angles of the vehicle when cornering. As well, two task positions of the wheels with respect to the chassis are specified for suspension movement in straightaways. The result is 18 design equations with 18 unknowns that have a total degree of 2,097,152, though only 336 roots. An example design is presented. INTRODUCTIONThis paper presents the synthesis theory for novel automotive suspension designs based on the Watt I six-bar. The motion objectives of the synthesis are (i) to guide the chassis and wheels of the vehicle into a specified pose when cornering, and (ii) to guide the motion of the wheels through two task positions with respect to the chassis suitable for straightaways. This motion specification is equivalent to solving for four task positions of the wheel with respect to the chassis. In order to specify our motion objective we adopt two planar linkage models. They are a Watt I six-bar with base pivots b and c attached to a fixed chassis (Fig. 1), and a symmetric 12-bar with base pivots N R and N L

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Section: Literature Reviewmentioning

confidence: 99%

Section: Reduction Of Synthesis Equationsmentioning

confidence: 99%

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Vehicle Suspension Design Based on a Six-Bar Linkage

Plecnik

McCarthy

2014

Volume 5A: 38th Mechanisms and Robotics Conference

View full text Add to dashboard Cite

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“…There are a large number of published kinematic suspension schemes [2,3]. For the analysis and synthesis of such mechanisms in terms of kinematic properties it is possible to use the vector or matrix method [4,5]. Models with flexible kinematic pairs of basic types of suspension and elasto-kinematic analysis are demonstrated in scientific work [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Arm Stiffness on the Elasto-Kinematic Properties of Single-Axle Suspension by Using the MBS Simulation Model

Vrána¹,

Bradáč²,

Kovanda³

et al. 2017

THE IJES

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“…Laurent and Sebe (2001) have patented an active camber suspension in order to improve operating safety vehicle and maintain the tires in a position relative to the ground; thus minimize the extremely severe stresses and improve fatigue strength. Simionescu and Beale (2002) studied the kinematics of a classic rigid body guidance mechanism multilink suspension to determine a minimum variation of wheel track, toe angle and camber angle during bump (jounce) and rebound of the wheel. Rocca and Russo (2002) present a kinematic analysis algorithm for a multilink suspension taking into account the joint compliance.…”

Section: Introductionmentioning

confidence: 99%

Influence of compliance for an elastokinematic model of a proposed rear suspension

Tica

Dobre

Mateescu

et al. 2014

Int.J Automot. Technol.

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ABSTRACT−The research is carried out to improve passenger's comfort to increase the vehicles stability in dynamic conditions. The literature available in the automotive engineering considers different topics for studying suspensions. An example represents mechanisms structure and analysis (synthesis, kinematics, and dynamics) under various operating conditions. These aspects have been approached before analytically, numerical. The current paper studies the influence of the lateral force on the contact patch of the wheel and the corresponding variations of vehicle stability parameters, such as camber angle and wheel rear track. The study is performed for a newer innovative rear suspensions mechanism which does not have a wheel track and camber angle variation, relative to the chassis, when the suspension components was considered rigid. A numerical solution is obtained through a virtual model on several commercial codes: MSC Adams, Patran, Nastran. Concerning the analysed parametes, their variation increases as the applied force is increased. Moreover, the largest variation corresponds to the case were elastic bushings and deformable links are considered.

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Synthesis and analysis of the five-link rear suspension system used in automobiles

Cited by 65 publications

References 9 publications

Vehicle Suspension Design Based on a Six-Bar Linkage

Vehicle Suspension Design Based on a Six-Bar Linkage

The Effect of Arm Stiffness on the Elasto-Kinematic Properties of Single-Axle Suspension by Using the MBS Simulation Model

Influence of compliance for an elastokinematic model of a proposed rear suspension

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