چکیده مقاله
The fatigue resistance of flexible pavements is highly related to fracture properties of the hot mix HMA at intermediate temperatures This paper utilizes the cohesive finite element modeling in a rate dependent framework to investigate the fracture behavior of a typical asphalt concrete mixture The proposed model considers the viscoelastic behavior of the bulk material and the effects of loading rates on the fracture process zone of the asphalt mixture samples To validate the computational framework for asphalt concrete mixture cracking, the results were compared to tensile fracture tests on the Semi Circular Bending SCB tests By considering the viscoelastic properties of the bulk material and the rate dependent explicit cohesive finite element method there is a good correlation between the predicted fracture properties and the measured ones obtained from the SCB fracture experiments
کلیدواژهها
نویسندگان
Mohammad Molayem
School of Civil Engineering, Iran University of Science and Technology
Mahmoud Ameri
School of Civil Engineering, Iran University of Science and Technology
Shams Nowbakht
School of Civil Engineering, Iran University of Science and Technology
شیوه ارجاع
Molayem, Mohammad and Ameri, Mahmoud and Nowbakht, Shams,1394,Computational Framework for Rate Dependent Fracture Modeling of Asphalt Concrete Mixtures,10th International Congress on Civil Engineering,Tabriz
ارائهشده در
مجموعه مقالات دهمین کنگره بین المللی مهندسی عمران15 اردیبهشت 1394 · تبریز