Modelling and Experimental Investigation of Clutch Damper Spring Stiffness Effect on Truck Driving Comfort

Konakçı

European Mechanical Science

et al. 2021

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Section: Vehicle Comfort Overview Based On Experimental Resultsmentioning

confidence: 99%

Experimental Investigation of the Hybrid Damper Clutch System Under Dynamic Conditions of an Automobile Powertrain

Konakçı

European Mechanical Science

et al. 2021

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“…The hydraulic hybrid powertrain system was analyzed in [2] using 1-D modeling. Analysis using 1-D simulation at stiffness levels of the clutch disc damper were studied in [3]. The natural frequency of vehicle components were studied in [4], assuming on optimal weight values.…”

Section: Introductionmentioning

confidence: 99%

Vibration Damping Optimization using Simulated Annealing Algorithm for Vehicle Powertrain System

Eng. Technol. Appl. Sci. Res.

2020

The clutch system in a vehicle’s powertrain system controls torque transmission and has vibration damping properties. A vehicle’s clutch system is subjected to high dynamic loads and vibrations, under operational conditions, that need further system analysis. The torque generated from the vehicle’s engine creates vibrations at different levels of frequencies. For this purpose, vibration damping systems have to be designed to make the vehicle work more efficiently. In this study, the 1-D modeling of powertrain system, including metallic clutch damper springs, was subjected to vibration optimization with the Simulated Annealing (SA) algorithm. This novel methodology accelerates the powertrain system vibration optimization and provides assumptions eliminating cost and time in real vehicle testing.

“…Tork iletimi T [Nm], F [N] sıkıştırma kuvveti, sürtünme katsayısı μ, sürtünme yüzey sayısı N ve ortalama yarıçap Rm ile orantılıdır (Eş. 1)[15]. Amortisör yayı sertlik değeri, her yayın (sertlik) tek sertliğinin toplamıdır.…”

unclassified

Otomobil güç aktarım sistemleri için elastomer yaylı sönüm sisteminin tasarımı ve doğrulanması

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

2020

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 Automobile powertrain system dynamics  Elastomer clutch damper spring validation  Elastomer spring durability under dynamic forces In this study, the comparison has been performed with the traditional metallic helical springs, and the advantages and disadvantages of the systems with elastomer springs and metallic springs were revealed with analysis and test results. The flowchart of the study can be seen below; Figure A. Elastomer damper spring validation methodology performed in the study Purpose: The main objective is to observe the performance of new generation elastomer damper in an automobile powertrain system based on experimental approach comparatively with conventional metallic damper systems. Theory and Methods: Experimental bench tests have been performed to reveal the behavior of the elastomer damper clutch in the powertrain system of the automobiles. Results: Due to the hyperelastic and viscoelastic properties, the elastomer materials react unlike to metal materials depending on many variables such as strength, time, temperature and material properties. Numerical results are indicated in the manuscript. Conclusion: Results of the study show that due to hyperelastic and viscoelastic properties of rubbers, the stiffness characteristic of rubber spring tends to loose within the time which may cause insufficient vibration damping. Also, this study provides and presents new testing and optimization approaches on the clutch disc using rubber damper springs.