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ALTI TEKERLEKLİ BİR TAŞITIN TİTREŞİM ANALİZİ

THE VIBRATION ANALYSIS OF A SIX WHEELED VEHICLE

Journal Name:

  • Sigma Mühendislik ve Fen Bilimleri Dergisi

Publication Year:

  • 2004

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Calculation of resonance frequencies of a six-wheeled vehicle has been propesed in this work by means of computational and experimental methods. In modelling vehicle, elastic body and rigid body techniques were used in computational methods. Therefore a three – dimensional finite element model was generated using beam elements and shell elements. The components of the experiment vehicle such as gas tank, main engine etc. have been modelled as lumped masses on original location at experiment vehicle. The other approach in modelling of a vehicle is discrete mass model as rigid body. Tires were modelled as spring and dashpot elements. The excitation with an electrodynamic shaker driven by a sinusoidal signal were used to measure the frequency response of the system(sine-sweept method). Vibration measurements were taken from several places (driver seat location etc.) by B&K 2515 vibration analyser. The results obtained from experiment were compared with the calculated ones and a good aggrement between these results were obtained. The vehicle vibration on road was studied experimentally.The vibration level of vehicle was high on road. Wavelet filtration was applied to the vibration measurements for defining the resource of vibration.
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Abstract (Original Language): 
Altı tekerleğinden tahrikli bir taşıtın rezonans frekansları sayısal ve deneysel olarak elde edilmiştir. Taşıtın dinamik modellenmesinde elastik gövde ve rijit gövde modelleme yaklaşımı kullanılmıştır. Elastik gövde yaklaşımında, üç boyutlu sonlu eleman modeli, kabuk ve çubuk elemanlar kullanılarak oluşturulmuştur. Taşıt parçaları kütle eleman olarak, orjinal yerlerine konulmuştur. Rijit gövdeli model yaklaşımında "Tam Taşıt" esas alınarak matematik modellemeler gerçekleştirilmiştir.Tekerlekler, yay ve sönüm elemanı kullanılarak modellenmiştir. Deneysel çalışmalarda, elektrodinamik bir titreşim üretici ile tahrik sağlanmış ve frekans değerleri elde edilmiştir(sinüs-süpürme yöntemi). Ayrıca seyir durumu için testler yapılmıştır. Ölçümler B&K 2515 Vibration Analyser cihazıyla gerçekleştirilmiştir. Sayısal ve deneysel çaılşmalardan elde edilen sonuçlar karşılaştırılmıştır. Seyir durumu için yapılan deneysel çalışmalarda taşıt titreşim ivme değerlerinin büyük olduğu görülmüştür. Wavelet filtreleme yöntemi ile titreşim kaynağı belirlenmiştir ve çözüm önerileri getirilmiştir..
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  • 3
129-143
  • Turkish

REFERENCES

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