Spectral simulation and shock absorber identification

Schiehlen, Werner; Hu, Bin

doi:10.1016/s0020-7462(01)00053-1

Cited by 63 publications

(33 citation statements)

References 6 publications

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“…Furthermore, surface roughness of the pavement has a significant influence on driving comfort and driving safety [3]. Many researchers [4][5][6][7][8][9][10][11] had studied the response of road and bridge deck pavement under the action of dead loads, moving constant loads, and dynamic loads, and dynamic loads have been considered to be a better way to reflect surface roughness of road and bridge deck pavement. White noise filtering method, harmony superposition method, FFT method, and AR/ARMA method are four common types of models to produce surface roughness of road and bridge deck pavement, in which harmony superposition method and FFT method [12,13] are considered to be simple, highly accurate in computation, and based on rigorous mathematical foundation.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Dynamic Load on Stresses in a Deck Pavement with an Interlayer Contact Model

Wang

Feng

Wang

et al. 2018

Advances in Civil Engineering

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Random surface roughness of bridge deck pavement just like random road surface roughness was simulated by the harmony superposition method in this paper. e dynamic load of vehicle was calculated by the random surface roughness of the deck pavement and the quarter-car model. A finite element model of a box girder bridge and its deck pavement was established, and the bonding condition between the adjacent layers was assumed to be contact bonding condition. e stress values of the asphalt concrete layer were calculated and analyzed when surface roughness condition, vehicle speed, and disengaging area changed. Results show that random surface roughness of deck pavement affected the stress trend of the asphalt concrete layer obviously. e appearance of disengaging area would increase the stress values of the asphalt concrete layer and the normal tensile stress value between the asphalt concrete layer and the waterproof layer. is would speed up the damage of the asphalt concrete layer and enlarge further the disengaging area.

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Section: Introductionmentioning

confidence: 99%

Effect of the Dynamic Load on Stresses in a Deck Pavement with an Interlayer Contact Model

Wang

Feng

Wang

et al. 2018

Advances in Civil Engineering

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“…As an important device used in suspension systems of modern vehicles, the shock absorber is mounted between auto bridge and frame for damping the vibration caused by uneven road to moderate impulsive load [1]. Therefore, the damping performance of the shock absorber is of importance to running smoothness, operating steadiness and through capacity of vehicles.…”

Section: Introductionmentioning

confidence: 99%

Development of hydraulically driven shaking table for damping experiments on shock absorbers

Wang

Xie

et al. 2014

Mechatronics

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“…when coil springs are adopted), it is well known that standard, currently used shock absorbers are neither linear nor symmetrical with respect to compression and extension. Experimental tests show that in a wide range of working conditions (namely when no vaporization of the damping fluid takes place) the force developed by the damper only depends on the suspension shaft speed in a strongly non-linear way [2] due to both the non linearities purposely built in the shock, and the presence of dry friction for very low suspension speed. Thus a variety of force-velocity characteristic descriptions have been proposed.…”

Section: Introductionmentioning

confidence: 99%

An Automated Procedure for the Optimization of Suspension Damping of Road Racing Motorcycles

Leonelli

Mancinelli²

2013

Volume 13: Transportation Systems

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The suspension systems generally installed in road racing motorcycles make it possible to fine tune the damping characteristics through a wide range of adjustments, so that the amount of force delivered for low and high suspension shaft speed, in both compression and rebound states, can be independently set by the user. Nevertheless, the optimal choice of suspension tuning parameters is a difficult task, normally affecting the vehicle dynamic behavior and its handling characteristics, and technical literature lacks procedures being developed and adopted in practice for this purpose. In this paper a handling-oriented algorithm for the optimization of the suspension damping parameters of a passively suspended racing motorcycle is presented. An optimization function is proposed for two significant maneuvers in road racing, such as high lean angle cornering and braking. The related objective functions are based on the minimization of the fluctuating component of the vertical front tire-ground force, allowing the tire to maximize the friction contact actions, that is maximizing the vehicle's ability to accelerate. The above maneuvers are simulated by means of a multibody motorcycle model where the suspensions non-linearity is taken into account. The experimental damping force versus suspension shaft speed relationship is modeled by means of a non-parametric B-spline piecewise function, whose coefficients are determined by a mixed interpolation-approximation procedure, and their choice and values are restrained by manufacturability constraints. This makes it possible to properly model the effects of the tuning control parameters and of the dry friction with a minimum number of parameters. Moreover, it is shown that a computationally efficient optimization can be performed using this properly designed B-spline coefficients as optimization variables.

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Spectral simulation and shock absorber identification

Cited by 63 publications

References 6 publications

Effect of the Dynamic Load on Stresses in a Deck Pavement with an Interlayer Contact Model

Effect of the Dynamic Load on Stresses in a Deck Pavement with an Interlayer Contact Model

Development of hydraulically driven shaking table for damping experiments on shock absorbers

An Automated Procedure for the Optimization of Suspension Damping of Road Racing Motorcycles

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