Determination of Parameters of the Discrete Element Bond Model for Asphalt Mixture Based on Splitting Test
المؤلفون المشاركون
Du, Yang
Fan, Dahai
Guo, Laiyao
Shan, Jingsong
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-05-02
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
A discrete element method (DEM) has widely been used to simulate asphalt mixture characteristics, and DEM models can consider the effect of aggregate gradation and interaction between particles.
However, proper selection of model parameters is crucial to obtain convincing results from DEM-based simulations.
This paper presents a method to appropriately determine the mechanical parameters to be used in DEM-based simulation of asphalt concrete mixture.
Splitting test specimens are prepared by using asphalt mixture, and the splitting test results are compared with simulation results from two-dimensional (2D) DEM and three-dimensional (3D) DEM.
Basing on the DEM results, the effects of contact model parameters on the simulation results are analyzed.
The slope of the load-displacement curve at the beginning stage is mainly affected by the stiffness parameters, and the peak load is mainly determined by using the value of the bond strength.
The laboratory splitting test of AC-20 and AC-13 specimens were performed at different temperatures, namely, −10°C, 0°C, 10°C, and 20°C, and the load-displacement relationships were plotted.
According to the real load-displacement curve’s slope at the beginning stage and peak load applied, the range of DEM bond model parameters is determined.
On the basis of DEM results of the splitting test, the relationships between simulation load-displacement curve’s characteristics and bond model parameters are fitted.
The values of the parameters of the DEM contact bond model at different temperatures are obtained depending on the actual load-displacement curve’s initial slope and peak load.
Lastly the DEM and laboratory test results are compared, which illustrates that the parallel bond model can well simulate the behavior of asphalt mixture.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Shan, Jingsong& Du, Yang& Fan, Dahai& Guo, Laiyao. 2019. Determination of Parameters of the Discrete Element Bond Model for Asphalt Mixture Based on Splitting Test. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1116395
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Shan, Jingsong…[et al.]. Determination of Parameters of the Discrete Element Bond Model for Asphalt Mixture Based on Splitting Test. Advances in Civil Engineering No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1116395
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Shan, Jingsong& Du, Yang& Fan, Dahai& Guo, Laiyao. Determination of Parameters of the Discrete Element Bond Model for Asphalt Mixture Based on Splitting Test. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1116395
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1116395
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر