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Sert Toprak Zemin Üzerinde Rijit Tekerleğin Profil Açılarının Çeki Performansına Etkisi

Effect Of Lug Angles Of Rigid Wheel On The Tractive Performance On Hard Soil Terrain

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DOI: 
http://dx.doi.org/10.13002/jafag4380
Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
On a certain ground, the tractive performance of an off-road vehicle depends largely on the interaction of its tires with the terrain. Accordingly, studying the behavior of tires has a great importance. It is aimed to provide information about the effect of different tire circumferential lug angles on the tractive performance in this study. A single wheel test setup was designed and produced for this purpose. Tractive performance of a pneumatic tire used as drive tire of off-road vehicles and a rigid wheel having different circumferential lug angles was investigated with this setup. Various axle loads, hard soil ground and lug angles were selected as work parameters. As a result, it was determined that effects of controlled variables on slip ratio and tractive efficiency obtained by drawbar pull were important. Average slip ratio of the rigid wheel with 0º circumference lug angle was the highest, because adherence to ground of this rigid wheel is insufficient. The maximum tractive efficiency was achieved at a value of 66 % on a rigid wheel with a 45 ° circumferential lug angle. It was seen that the performances of the pneumatic wheel with 45º circumferential lug angle and the rigid wheel with 45º circumferential lug angle were so close to each other. The rigid wheel with 15º circumferential lug angle performed best in low axle loads, while the rigid wheel with 45º performed best in high axle loads. A reference can be constituted for optimum tire lug angle determination by analyzing the rolling resistance in the future studies.
Abstract (Original Language): 
Belli bir zeminde, bir yol dışı taşıtının çeki performansı, büyük ölçüde, lastiklerinin arazi ile etkileşimine bağlıdır. Bu nedenle, lastiklerin davranışını çalışmak büyük bir öneme sahiptir. Bu çalışma ile, farklı lastik çevresel profil açısının, çeki performansı üzerinde ne ölçüde etkili olduğu konusunda bilgi sağlamayı amaçlanmaktadır. Bu amaçla bir tek tekerlek test düzeneği tasarlanmış ve imal edilmiştir. Bu düzenek ile yol dışı taşıtlarda muharrik lastik olarak kullanılan bir pnömatik lastiğin ve farklı çevresel profil açılara sahip rijit tekerleğin çeki performansı incelenmiştir. Çalışma parametreleri olarak çeşitli aks yükleri, sert toprak zemin ve profil açıları seçilmiştir. Sonuç olarak, kontrollü değişkenlerin, çeki kuvvetine bağlı olarak elde edilen patinaj ve çeki verimi üzerindeki etkilerinin önemli olduğu saptanmıştır. 0 ° çevresel profil açısına sahip rijit tekerleğin zemine tutunmasının yetersiz olması sebebiyle bu rijit tekerlekte ortalama patinaj en yüksek değerde olmuştur. Maksimum çeki verimliliği 45° çevresel profil açısına sahip rijit tekerlekte % 66 değerlerinde elde edilmiştir. Yapılan çalışmada 45 º çevresel profil açısına sahip pnömatik tekerleğin performansıyla 45 º çevresel profil açısına sahip rijit tekerleğin performansı birbirine çok yakın değerlerde olduğu gözlenmiştir. Gelecek çalışmalarda yuvarlanma direnci de incelenerek optimum lastik profil açısının belirlenmesinde kullanılacak bir referans teşkil edilebilir.
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