Elastokinematic modeling and study of five-rod suspension with subframe

Knapczyk, Józef; Maniowski, Michał

doi:10.1016/j.mechmachtheory.2005.11.003

Cited by 42 publications

(33 citation statements)

References 5 publications

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“…Knapczyk and Maniowski (2003) proposed a method for the dimensional synthesis of a 5-rod wheel suspension mechanism on the basis of the geometric configuration of the mechanism, aiming to achieve the desired suspension characteristics. A multi-body elastokinematic model of a car rear axle composed of two 5-rod suspensions with the suspension sub-frame was developed by Knapczyk and Maniowski (2006). A complex elastokinematic model was also developed for the multi-criteria optimization of a 5-rod car suspension in terms of car active safety and ride comfort (Knapczyk and Maniowski, 2010).…”

Section: Introductionmentioning

confidence: 99%

Method for the multi-criteria optimization of car wheel suspension mechanisms

Alexandru

Țoțu

2016

ing.inv.

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The paper deals with a general method for the multi-criteria optimization of the rear wheels suspension mechanisms in terms of kinematic behavior. The suspension mechanism is decomposed in basic binary links, and the kinematic synthesis is separately performed for each of them. The design variables are the global coordinates of the joint locations on the car body (chassis). The disposing of the joints on the wheel carrier were exclusively established by constructive criteria. The design objectives relate to kinematic position parameters of the wheel (displacements of the wheel centre along longitudinal and transversal directions, and modifications of the wheel axis direction), the optimization goal being to minimize these variations during the wheel travel. A computer program for the kinematic study was developed in C++. The application was performed for the wheel suspension mechanism of a race car.Keywords: Car, wheel suspension mechanism, kinematics, optimal synthesis. RESUMENEl artículo se ocupa de un método general para la optimización multiobjetivo de los mecanismos de suspensión de las ruedas posteriores en términos de comportamiento cinemático. El mecanismo de suspensión se descompone en enlaces binarios básicos, y la síntesis cinemática se realizó por separado para cada uno de ellos. Las variables de diseño son las coordenadas globales de las ubicaciones de las articulaciones en el chasis. La disposición de las articulaciones en el soporte de la rueda se estableció exclusivamente por criterios constructivos. Los objetivos de diseño se refieren a la posición de los parámetros cinemáticos de la rueda. El propósito de la optimización consiste en minimizar estas variaciones. Un programa informático para el estudio cinemático fue desarrollado en C ++. La aplicación numérica se llevó a cabo para el mecanismo de suspensión de un vehículo monoplaza.Palabras clave: Automóvil, mecanismo de suspensión de la rueda, cinemática, síntesis óptima.

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Section: Introductionmentioning

confidence: 99%

Method for the multi-criteria optimization of car wheel suspension mechanisms

Alexandru

Țoțu

2016

ing.inv.

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“…The twodimensional suspension mechanism was studied semianalytically and numerically. Knapczyk and Maniowski (2006) perform tests and experiment the kinematic and elasto-kinematic characteristics of the five-rod suspension with subframe. The proposed vector-algebraic approach is useful in iterative elastokinematic studies.…”

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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“…More links means more design freedom, but at the expense of need to use of more complicated computational approaches. Five-rod (also known as five-link or five-point) suspension mechanism of the car wheels can be considered as an example of an in-parallel mechanism, like Stewart platform [7,8]. Other structures of the independent wheel suspensions (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…double wishbone, McPherson) can be treated as a simplified case of 5-link mechanism [11]. A lot of studies were carried out concerning kinematic and elastokinematic analysis of suspension mechanism, including 5-link type as well [4,7]. Fewer known papers are devoted to dynamic analysis [3,10].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of 5-rod Car Suspension for Elastokinematic and Dynamic Characteristics

Knapczyk¹,

Maniowski²

2010

Archive of Mechanical Engineering

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The paper presents optimization of 5-rod (5-link) suspension mechanism used in passenger cars for independent guiding of the wheels. Selected stiffness coefficients defined for five elastomeric bushings installed in joints of the suspension rods are considered as design variables. Two models with lumped parameters (i.e. elastokinematic and dynamic) of wheel-suspension-car body system are formulated to describe relationships between the design variables and the performance indexes including car active safety and ride comfort, respectively. The multi-criteria goal function is minimized using a deterministic algorithm. The suspension with optimized bushings rates fulfils desired elastokinematic criteria together with a defined dynamic criterion, describing the so-called rolling comfort. An event of car passing over short road bump is considered as dynamic conditions. The numerical example deals with an actual middle-class passenger car with 5-rod suspension at the front driven axle. Estimation of the models parameters and their verification were carried out on the basis of indoor and outdoor experiments. The proposed optimization procedure can be used to improve the suspension design or development cycle.

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Elastokinematic modeling and study of five-rod suspension with subframe

Cited by 42 publications

References 5 publications

Method for the multi-criteria optimization of car wheel suspension mechanisms

Method for the multi-criteria optimization of car wheel suspension mechanisms

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

Optimization of 5-rod Car Suspension for Elastokinematic and Dynamic Characteristics

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