Sedat TARAKÇI, Efe IŞIK, Muzaffer KASABA

PICK-UP HAFİF KAMYON UYGULAMALARI İÇİN TEK PARÇALI ALÜMİNYUM KARDAN MİLİ KONSEPT TASARIMI

Kardan milleri, motordan aldığı torku ve dönme hareketini arka akslara ileten bir aktarma organıelemanıdır. Yüksek tork taşıma gerekliliklerini karşılamak amacıyla, hafif ticari araç uygulamalarındakullanılan kardan milleri çelik malzeme kullanılarak üretilmektedir. Çelik malzeme kullanılarak üretilmişkardan mili ve parçalarında ağırlık azaltma, geometrilerin sınır koşulları nedeniyle çoğu zaman kısıtlıolabilir. Bu nedenle alüminyum gibi düşük yoğunluklu malzemeler kullanılarak geliştirilen uygulamalarönem kazanmaktadır. Bu çalışma kapsamında pick-up tarzı hafif ticari araç uygulamalarında kullanılmaküzere alüminyum kardan mili için mühendislik hesapları gerçekleştirilmiş ve sonlu elemanlar analizleriile hesaplar doğrulanmıştır. Doğrulmalar sonucunda iki yöntem arasında dayanım hesaplarında %1,doğal frekans hesaplarına %8 sapma hesaplanmıştır ve sapma değerlerinin kabul edilebilir olduğubelirlenmiştir. Birim parçaların, için sonlu elemanlar ile elde edilen sonuçlar kullanılan alüminyummalzemenin akma limitleri ile güvenlik katsayıları hesaplanmıştır. Elde edilen güvenlik katsayıları kardanmilleri için uygun olduğu tespit edilmiştir.

Concept Design Of an Aluminum One-Piece Driveshaft for Pick-up Truck Applications

Driveshafts are the driveline elements that transfers torque and rotational motion which is received from the engine to the rear axles. In order to meet the high torque handling requirements, driveshaft components are usually made up of steel. Weight reduction in steel parts can often be limited due to the boundary conditions of geometries. For this reason, applications developed with low density parts such as aluminum gain importance. Within the scope of this study, engineering calculations for aluminum cardan shaft for pick-up style light commercial vehicle applications were performed and the calculations were verified with finite element analysis. As a result of the corrections, deviation of 1% for strength calculations and 8% for natural frequency calculations was calculated between the two methods, and it was determined that the deviation values were acceptable. The yield limits and safety coefficients of the aluminum material used were calculated for the unit parts with the results obtained with finite elements. It has been determined that the safety coefficients obtained are suitable for driveshafts.

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