摘要
针对构成沥青混合料骨架的集料内部复杂的微观作用机制,在随机集成2种粒径集料混合体基础上,利用离散单元法DEM进行微观模拟。据此原理,在VC++平台上开发出相应的计算程序,并将该程序用于模拟重力场内集料的微观相互作用。结果表明,该方法为实现级配可视化设计、分析骨架强度形成机理及混合料变形与破坏机制奠定基础。
Upon the random deposition of binary mixtures of spherical aggregates, discrete element method （DEM） is applied to simulate complicated micro-mechanism among aggregates,which compose the skeleton of asphalt mixture. A computer program of this procedure was developed on the platform of VC^＋＋ , with which interactions among aggregates in gravity field was simulated. Computation results show that this method is the base of visual gradation design. At the same time, the method is also the base of analyzing strength forming of skeleton and mechanism of deformation and fracture of asphalt mixture.
出处
《中南公路工程》
2007年第2期19-22,35,共5页
Central South Highway Engineering
基金
教育部博士点基金项目(20040613018)
关键词
沥青混合料
集料
微观模拟
离散单元法
asphalt mixtures
aggregates
micro-simulation
discrete element method
