A contribution to research of degradation of characteristics of vibration parameters on vibration aspect of vehicle comfort

Demić, Miroslav; Diligenski, Djordje

doi:10.5937/jaes10-2244

Cited by 4 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the damping force of the shock absorber declines with the duration of service [5]. Dong proposed a robust design method for shock absorbers to provide sufficient damping force under different temperature as a result of lower sprung mass acceleration, but the damping force degradation was not considered with the increasing useful life [6].…”

Section: Introductionmentioning

confidence: 99%

“…A group of scientists researched the effects of vehicle vibration parameters degradation on thermal load of shock absorbers, and the result showed that heat flux of the shock absorbers degraded after a long-term service [7]. Some of researcher investigated degradation of simultaneous spring force, shock absorber force couple with tire force on vibration aspect of vehicle comfort, but the influences of separate shock absorber damping force degradation were neglected [5]. A researcher presented a finite element model to study vehicle long term NVH performance degradation caused by high-mileage shock absorber bushings, but the weighted mean square root of accelerations at the seat were not measured [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Shock Absorber Degradation on Vehicle NVH Performance

Shu¹,

Luo²,

Yang³

2017

Topics in Intelligent Computing and Industry Design (ICID)

View full text Add to dashboard Cite

Damping characteristics degrade unavoidably in shock absorber's useful life. To study the effect of shock absorber degradation on NVH (Noise, Vibration and Harshness) performance of vehicles served in long term, double-action durability test was carried out on numerous shock absorbers. Afterwards, indicator diagrams and velocity characteristics of shock absorbers were obtained; damping coefficients were calculated at the pre-valve and postvalve opening. Based on the experimental result, a vehicle virtual prototype model was built by ADAMS/Car Ride. Then, vertical driver seat accelerations were measured, and weighted root-mean-square (RMS) accelerations were calculated at driver seat. In addition, influences of individual shock absorber degradation on vehicle high mileage performance were analyzed. The result shows that damping force degrades after durability test; the reduction rate of the weighted RMS acceleration is about 4.1%, while the increment rate is more than 7.5% at high mileage; the front-left shock absorber degradation causes a significantly worse vehicle NVH performance among the 4 individual one.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Shock Absorber Degradation on Vehicle NVH Performance

Shu¹,

Luo²,

Yang³

2017

Topics in Intelligent Computing and Industry Design (ICID)

View full text Add to dashboard Cite

show abstract

Numerical simulation of shock absorbers heat load for semi-active vehicle suspension system

Demic

Diligenski²

2016

THERM SCI

View full text Add to dashboard Cite

Dynamic simulation, based on modelling, has a significant role during to the process of vehicle development. It is especially important in the first design stages, when relevant parameters are to be defined. Shock absorber, as an executive part of a semi-active suspension system, is exposed to thermal loads which can lead to its damage and degradation of characteristics. Therefore, this paper attempts to analyse a conversion of mechanical work into heat energy by use of a method of dynamic simulation. The issue of heat dissipation from the shock absorber has not been taken into consideration.

show abstract

A contribution to research of the influence of degradation of vehicle vibration parameters on thermal load of shock absorbers

Demić¹,

Diligenski²,

Milovanović³

2013

Istra?ivanja I Projektovanja Za Privredu

View full text Add to dashboard Cite

Dynamic simulation, based on modelling, has a signifi cant role during to the process of vehicle development. It is especially important in the fi rst stages of vehicle design, when relevant parameters are to be defi ned. In practice, it is commonly assumed that vehicle vibration parameters are invariable, what is basically not true. Many investigations have shown that vibration parameters degrade in service conditions, what consquently leads to the variation of dynamic characteristics of a vehicle. This paper attempts to indicate, on the basis of the preliminary results, a need to introduce these variations, caused by the thermal impact, in the early stages of vehicle design through the adequate vehicle modelling.

show abstract

A contribution to research of degradation of characteristics of vibration parameters on vibration aspect of vehicle comfort

Cited by 4 publications

References 1 publication

Influence of Shock Absorber Degradation on Vehicle NVH Performance

Influence of Shock Absorber Degradation on Vehicle NVH Performance

Numerical simulation of shock absorbers heat load for semi-active vehicle suspension system

A contribution to research of the influence of degradation of vehicle vibration parameters on thermal load of shock absorbers

Contact Info

Product

Resources

About