Oscillation of spring part of transport vehicles is with unconservative description of shock absorbers

Hrubel, M. H.; Сокіл, М. Б.

doi:10.33577/2312-4458.13.2015.30-33

Cited by 2 publications

(7 citation statements)

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“…The main limitations regarding the physical model and movement of the researched object under study are given in [12]. The given limitations make it possible to state that the relative movement of the sprung mass of the car is plane-parallel, and therefore its position is definitely determined by the position of the center of mass О and the angle of rotation of the specified part about О.…”

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

“…i.e. a Q  will be determined on the basis of the following considerations [13]: on the one hand, the work of active forces acting on the sprung part on the possible displacement of the specified generalized coordinate  is determined by the ratio…”

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

“…the sum of moments of active forces acting on the sprung part relative to the center of mass. The last magnitude, according to Varignon's theorem [13], is defined by dependence…”

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

“…In the same way as for damped oscillations, the general ideas of excitation methods can be used to research the non-autonomous equation (12), and therefore the amplitude-frequency characteristic of the excited motion can be presented in the form…”

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

“…The analysis of various literary sources showed that for now there is no optimal method of researching the dynamics of sprung and unsprung masses from the conditions of formation of perspective parameters of car suspensions [1]. Under such conditions, the formation of perspective parameters of car suspensions cannot be carried out without conducting research aimed at developing new [2][3][4] or improving existing mathematical models of their dynamics; creating methods or techniques of theoretical research of their developed models.…”

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confidence: 99%

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Research of the influence of car suspension characteristics on the dynamics of its sprung part

Hrubel

Kovalchuk

Lanets

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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A method of determining the parameters of the car suspension has been developed, which allows taking into account the influence of the main characteristics of the suspension. In particular, the influence of static deformation, nonlinearity parameter, and such external factors as the movement of a car over rough terrain, stability of movement are taken into account. Mathematical models of vertical oscillations - dynamics of the sprung part of the vehicle with non-linear force characteristics - have been improved for the specified method. With this aim, a mathematical apparatus was developed for the analytical research of the influence of vertical oscillations on traction-speed characteristics, performance, smoothness, and stability of movement.

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Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

“…the sum of moments of active forces acting on the sprung part relative to the center of mass. The last magnitude, according to Varignon's theorem [13], is defined by dependence…”

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

Section: Fig 1 Physical Model For Research the Oscillations Of A Carmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Research of the influence of car suspension characteristics on the dynamics of its sprung part

Hrubel

Kovalchuk

Lanets

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Method of normal oscillations and substantiation of the choice of parameters for certain nonlinear systems with two degrees of freedom

Sokil,

Senyk,

Sokil

et al. 2023

Math. Model. Comput.

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On the example of the plane model of wheeled vehicle oscillations with adaptive power characteristic of the suspension system, the methodology for selecting its main parameters that would maximize the movement smoothness is developed. To solve this problem, the mathematical model of relative oscillations of the sprung part is constructed, provided that they are carried out in the vertical plane. The latter represents the system of two nonlinear differential equations describing the relative displacement of the center of mass of the sprung part and the angle of rotation of the latter around the transverse axis passing through the center of mass of the specified part. To construct the approximate analytical solution of this equations system, and thus to describe the main parameters that determine the relative position of the sprung part under reasonable assumptions, the method of normal oscillations of nonlinear systems with concentrated masses is used. This made it possible to obtain the system of ordinary differential equations of the first order that describe the amplitude–frequency characteristics of the sprung part vibrations. Due to the analysis of the latter it is determined that at a certain ratio between the parameters describing the power characteristics of the suspension system, it can perform isochronous vertical and longitudinal–angular oscillations, and thus it is possible to achieve maximum comfort in transporting passengers or dangerous cargo over rough terrain. The main obtained results can be used to create the software product for adaptive suspension, and their validity is confirmed by: a) in passing to the limit, obtaining results known from literary sources; b) generalization, based on the use of periodic Ateb-functions, of widely tested analytical methods for constructing solutions of differential equations with strong nonlinearity.

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Oscillation of spring part of transport vehicles is with unconservative description of shock absorbers

Cited by 2 publications

References 0 publications

Research of the influence of car suspension characteristics on the dynamics of its sprung part

Research of the influence of car suspension characteristics on the dynamics of its sprung part

Method of normal oscillations and substantiation of the choice of parameters for certain nonlinear systems with two degrees of freedom

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