Esnek Üstyapılarda Kritik Tekerlek ve Aks Konfigürasyonların Mekanistik Analizlere Göre Tespit Edilmesi

Year 2014, Volume: 25 Issue: 121, - , 01.02.2014

Sedat Özcanan Muhammet Vefa Akpınar

Abstract

Karayolu performanslarında tekerlek basıncı ve temas yüzey alanı ne kadar önemliyse, tekerlek temas nokta sayısı ve aralıkları da o kadar önem taşımaktadır. Bu çalışmada, arazide ağır taşıtlardan elde edilen veriler ışığında, ağır taşıtların tekerlek ve aks konfigürasyonları 3 boyutlu olarak sonlu elemanlar (Ls-Dyna) yöntemi ile modellenmiş ve dinamik analizi yapılmıştır. Tekerlek ve aks tiplerinin yol tabakalarında neden oldukları düşey ve yatay gerilme ve deformasyonların büyüklüklerine göre en kritik aks ve tekerlek tipleri tespit edilmiştir. Tekerlek izi hasarı ve yorulma çatlakları açısından en çok hasar verebilecek tekerleğin geniş yüzeyli ve tekil tekerleklerin olduğu, aks dingiller içerisinde ise motris (çekici) tek dingilin olduğu tespit edilmiştir

Keywords

Tekerlek ve aks konfigürasyonu, gerilme ve birim şekil değiştirme, mekanistik-ampirik tasarım

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