1 School of Materials Science and Engineering, Chang’an University, Xi’an 710061; 2 School of Highway, Chang’an University, Xi’an 710064; 3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an 710064
Abstract: AC-13 asphalt mixture was taken as the research object to investigate the evolution and distribution laws of force chains inside the asphalt mixture. A digital specimen of AC-13 asphalt mixture was reconstructed using the discrete element method (DEM) to simulate the simple performance test (SPT). Next, the force chain information among aggregate particles was extracted to analyze the evolution, probability distribution and angle distribution of force chains. The results indicated that the AC-13 mesoscopic model reconstructed using the discrete element method was feasible to simulate the mesoscopic mechanical properties of asphalt mixture by comparing the predicted results and laboratory test results. The spatial distributions of force chains are anisotropic, which were mainly the compressed force chains in vertical direction and sustained most of the Haversine loading. The probability distributions of normal force chains which varied with loading time were consistent. The probability distribution had the maximum value at the minimum f (the ratio of normal contact force and mean normal contact force). At f=1.75, it appeared the peak value again, then gradually decreased and tended to be stable. In addition, the angle distributions of normal force chains mainly located near 90° and 270°, the angle distribution proportions in the first and second quadrant were much larger than those in the third and fourth quadrant. Also, the angle distribution proportions in 60—120° and 30—150° were both larger than 70% with the minimum value of 72.733%.
常明丰, 黄平明, 裴建中, 张久鹏. 基于离散元方法的沥青混合料力链演化及分布量化分析*[J]. 《材料导报》期刊社, 2017, 31(18): 155-159.
CHANG Mingfeng, HUANG Pingming, PEI Jianzhong, ZHANG Jiupeng. Quantitative Analysis on Evolution and Distribution of Force Chain for Asphalt Mixture Using Discrete Element Method. Materials Reports, 2017, 31(18): 155-159.
1 Bouchaud J P, et al. Stress distribution in granular media and nonlinear wave equation[J]. J Physique I, 1995,5(6):639. 2 Wittmer J P, Cates M E, Claudin P. Stress propagation and arching in static sandpiles[J]. J Physique I, 1997,7(1):39. 3 Cates M E, et al. Development of stresses in cohesionless poured sand[J]. Phil Trans R Soc A, 1998,356(1747):2535. 4 Cates M E, Wittmer J P, Bouchaud J P, et al. Jamming, force chains and fragile matter[J]. Phys Rev Lett, 1998,81(9):1881. 5 Claudin P, Bouchaud J P. Models of stress fluctuations in granular media[J]. Phys Rev E, 1998,57(4):4441. 6 Tordesillas A, Shi J Y, Muhlhaus H B. Noncoaxiality and force chain evolution[J]. Int J Eng Sci, 2009,47:1386. 7 Hunt G W, Tordesillas A, Green S C, et al. Force-chain buckling in granular media: A structural mechanics perspective[J]. Phil Trans Ser A: Math Phys Eng Sci, 2010,368(1910):249. 8 Hunt G W, Hammond J. Mechanics of shear banding in a regula-rized two dimensional model of a granular medium[J]. Phil Mag, 2012,92(28-30):3483. 9 Howell D, Behringer R P. Stress fluctuations in a 2D granular couette experiment: A continuous transition[J]. Phys Rev Lett, 1999,82(26):5241-5244. 10Majmudar T S, Behringer R P. Contact force measurements and stress-induced anisotropy in granular materials[J]. Nature, 2005,435(23):1079. 11Yi Chenhong, Liu Yuan, Miao Tiaode, et al. Force transmission in three-dimensional hexagonal-close-packed granular arrays with defect submitted to a point load[J]. Granular Matter, 2007,9(3):195. 12Miao Tiaode, Yi Chenhong, Qi Yanli, et al. Force transmission in three-dimensional hexagonal-close-packed granular arrays submitted to a point load [J]. Acta Phys Sin, 2007,56(8):4713(in Chinese). 苗天德,宜晨虹,齐艳丽,等. 集中力作用下球形颗粒六角密排堆积体的传力研究[J].物理学报,2007,56(8):4713. 13Tordesillas A, et al. Stress-dilatancy and force chain evolution[J]. Int J Numer Anal Methods Geomech, 2010,35(2):264. 14Tordesillas A, Pucilowskia S, Sibille L, et al. Multiscale characterisation of diffuse granular failure[J]. Phil Mag, 2012,92(36):4547. 15Wang D M, Zhou Y H. Statistics of contact force network in dense granular matter[J]. Particuology, 2010,8(2):133. 16Sun Qicheng, Jin Feng, Wang Guangqian, et al. Force chains in a uniaxially compressed static granular matter in 2D [J]. Acta Phys Sin, 2010,59(1):30(in Chinese). 孙其诚,金峰,王光谦,等. 二维颗粒体系单轴压缩形成的力链结构[J]. 物理学报,2010,59(1):30. 17Bi Zhongwei, Sun Qicheng, Liu Jianguo, et al. Development of shear band in a granular material in biaxial tests [J]. Acta Phys Sin, 2011,60(3):1(in Chinese). 毕忠伟,孙其诚,刘建国,等. 双轴压缩下颗粒物质剪切带的形成与发展[J]. 物理学报,2011,60(3):1. 18Chen Hui, Liu Yilun, Zhao Xianqiong, et al. Analysis on avalanching motion and force chains of bed material within rotating cylinder based on discrete element method [J]. J Zhejiang Univ: Eng Sci, 2014,48(12):2277(in Chinese). 陈辉,刘义伦,赵先琼,等. 基于离散单元法的回转窑物料崩落运动及接触力链研究[J].浙江大学学报:工学版,2014,48(12):2277. 19Chen Hui, Liu Yilun, et al. Numerical experiments on transverse motion and force chains of solids in rotating cylinders [J]. J Central South Univ: Sci Technol, 2015,46(7):2446(in Chinese). 陈辉,刘义伦,等. 回转窑截面物料运动及力链结构的数值试验[J]. 中南大学学报:自然科学版,2015,46(7):2446. 20Wu Diping, Li Xingxiang, Qin Qin, et al. Study on mechanical behavior of the transverse processing on a granular matter layer [J]. Acta Phys Sin, 2014,63(9):098201(in Chinese). 吴迪平,李星祥,秦勤,等. 离散颗粒层被横向推移过程中的力学行为研究[J]. 物理学报,2014,63(9):098201. 21Tordesillas A, Lin Q, Zhang J, et al. Structural stability and jamming of self-organized cluster conformations in dense granular materials[J]. J Mech Phys Solids, 2011,59(2):265. 22Tordesillas A, Steer C A H, Walker D M. Force chain and contact cycle evolution in a dense granular material[J]. Nonlinear Processes Geophys, 2014,21(2):505. 23You Z P, Buttlar W G. Micromechanical modeling approach to predict compressive dynamic moduli of asphalt mixture using the distinct element method[J]. J Transport Res Board, 2006,1970:73. 24Liu Y, You Z P. Visualization and simulation of asphalt concrete with randomly generated three-dimensional models[J]. J Comput Civil Eng, 2009,23(6):340. 25Liu Y, Dai Q L, You Z P. Viscoelastic model for discrete element simulation of asphalt mixtures[J]. J Eng Mech, 2009,135(4):324.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
