Elastokinematic Analysis of Five-rod Suspension with Flexible Joints, Including Effects of Shock Absorber

Knapczyk, Józef; Dzierżek, Sławomir

doi:10.1080/00423119808969564

Cited by 6 publications

(6 citation statements)

References 1 publication

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“…II. Computing the deformations of the elastic elements (springs l s : equation 8, bumpers f b : equation (19) or (20), anti-roll bar f r : equation 28and bushings j x,y,z…”

Section: Determining the Static Equilibrium Positionmentioning

confidence: 99%

“…18 Constrained mechanical systems, for example, a vehicle suspension system, were analysed in Kang et al, 19 and the linearized motion equations were derived directly from the force equilibrium condition. In Knapczyk and Dzierzek, 20 an iterative elastokinematic analysis algorithm was developed with the aim of finding the equilibrium position of a five-rod suspension system with flexible joints. The study was carried out on a quarter-car model built in Simulink, which uses the nonlinear output of an elastokinematic analysis including the effect of the shock absorber characteristics on the dynamic behaviour of the suspension.…”

Section: Introductionmentioning

confidence: 99%

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Method for the quasi-static analysis of beam axle suspension systems used for road vehicles

Alexandru

2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper addresses an analytical method for determining the static equilibrium position of beam axle suspension systems used of motor vehicles. This method is applicable to most types of suspension systems and is based on the definition of the spatial positioning of the guiding mechanism as a result of the forces and torques acting in the suspension system. The static model is defined in analytical form, in terms of virtual work, considering the system of applied forces and reactions in the elastic suspension elements (springs, bumpers, anti-roll bar and bushings), whose deformations are determined by the spatial positioning of the guiding mechanism. The proposed method is based on an iterative algorithm by which, for a given set of contact forces on wheels, the equilibrium position is identified by scanning the entire vertical motion domain of the wheels and selecting the configuration that ensures minimal static function. The results obtained by the algorithmization of the method and computer programming allow an accurate assessment of the static behaviour of a beam axle suspension system (in terms of equilibrium configuration and reaction forces) in various regimes, without the need for costly experimental testing.

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“…II. Computing the deformations of the elastic elements (springs l s : equation 8, bumpers f b : equation (19) or (20), anti-roll bar f r : equation 28and bushings j x,y,z…”

Section: Determining the Static Equilibrium Positionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Method for the quasi-static analysis of beam axle suspension systems used for road vehicles

Alexandru

2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Once the reciprocal Jacobian is determined, the forward kinematic relation of a parallel mechanism can be obtained from equation (6) in the similar manner as used to derive equation (5) to give…”

Section: Kinestatics Of a Planar Parallel Mechanismmentioning

confidence: 99%

“…Raghavan 3 suggested an optimal synthesis method of the tie-rod position in order to make the variation in the toe angle linear to the displacement of the bump-rebound motion. Knapczyk and Dzier_ zek 4,5 developed the vector algebraic method for kinestatic analysis of the five-rod suspension mechanism with flexible joints and shock absorber. The aforementioned research studies were conducted for a quarter-vehicle model.…”

Section: Introductionmentioning

confidence: 99%

New Jacobian approach to the kinestatic analysis of a planar double-wishbone suspension mechanism

Kim

Hong

Choi

2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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An understanding of the kinestatic relation between a suspension mechanism and a vehicle body is important for the design of a vehicle with the desired motion characteristics. In particular, when the mechanism has elastic springs, it is necessary to analyse the instantaneous kinematic and statics (or, briefly, kinestatics) relations simultaneously. This paper presents a new Jacobian approach to the kinestatic analysis of a planar half-vehicle model with double-wishbone suspension mechanisms. Introducing the reciprocal Jacobian method of a planar mechanism, the kinestatic relations of a quarter-vehicle model are first derived. Next two instantaneous rotation centres of a pair of quarter-vehicle models are determined and modelled as virtual joints to form a new parallel-type mechanism of a half-vehicle model. Finally, the Jacobian and reciprocal Jacobian of the parallel-type mechanism are found in order to complete the kinestatic relations of a half-vehicle model. Using an illustrated example, it is shown that this new kinestatic analysis can be utilized for determination of the best locations of the strut springs for the least rolling motion due to cornering of a vehicle.

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“…As pointed out elsewhere, 67, 75, 78 double-wishbone suspensions can be assumed to be 5SS linkages having four of the outboard joints two-by-two coincident. Similarly, quadra-link suspensions can be considered to be particular embodiments of the 5SS arrangement where two of the joints attached to the wheel carrier coincide, 78 i.e. either a top pair or a bottom pair.…”

Section: Introductionmentioning

confidence: 99%

A unified approach to the kinematic synthesis of five-link, four-link, and double-wishbone suspension mechanisms with rack-and-pinion steering control

Simionescu

2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper presents a unified approach to the problem of dimensional synthesis of the five-link, four-link, and three-link (double-wishbone) suspension mechanisms with a rack-and-pinion steering input. In a simplified approach, the guiding links are assumed to be removed from their joints, allowing the wheel to be exactly driven through a number of prescribed jounce–rebound and steering positions during the kinematic synthesis process. Alternatively, the tie rod is maintained in place, and the rack length and the lengths of the remaining four guiding links are allowed to vary. An optimization problem based on the aggregated change in distance between the released ball joints evaluated in the aforementioned positions is then defined. By prescribing to the wheel a jounce–rebound motion only, rear-suspension mechanisms of the five-link, four-link, and three-link types can be conveniently synthesized by following the same procedure. Several solutions obtained through synthesis are then analyzed for their changes in steering error, recessional wheel motion, wheel track, toe angle and camber angle, showing very promising results. Additionally, a comprehensive review of nearly 150 publications relevant to the suspension design of automobiles is provided in the paper.

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Elastokinematic Analysis of Five-rod Suspension with Flexible Joints, Including Effects of Shock Absorber

Cited by 6 publications

References 1 publication

Method for the quasi-static analysis of beam axle suspension systems used for road vehicles

Method for the quasi-static analysis of beam axle suspension systems used for road vehicles

New Jacobian approach to the kinestatic analysis of a planar double-wishbone suspension mechanism

A unified approach to the kinematic synthesis of five-link, four-link, and double-wishbone suspension mechanisms with rack-and-pinion steering control

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