沥青混合料损伤演化的多尺度模拟  

Multiscale Simulation of Damage Evolution of Asphalt Mixtures

作　　者：刘福明[1,2] 王端宜[1] 

机构地区：[1]华南理工大学道路工程研究所,广东广州510641 [2]南昌工程学院土木建筑学院,江西南昌330099

出　　处：《中国公路学报》2010年第2期1-6,共6页China Journal of Highway and Transport

基　　金：国家自然科学基金项目(50278037)

摘　　要：为了全面分析沥青混合料的力学性能,了解沥青混合料的力学响应,引入了有限元多尺度计算方法,通过分析沥青混合料在较小尺度范围内出现的特征和现象,将细观和宏观的方法结合起来,模拟沥青混合料在荷载作用下的力学性能(包括损伤演化过程),从而有效实现不同尺度模型间的变形协调。结果表明:该模型能定性地模拟沥青混合料的力学性能,分析不同组成成分的结合以及通过计算评价沥清混合料的性能。In order to analyze the mechanical properties of asphalt mixture comprehensively and find out the mechanical response of asphalt mixture, a methodology of finite element multiscale model was proposed. By analyzing the characteristics and phenomenon of asphalt mixture occurred in the small scales, and combining meso-mechanics method with macro-mechanics method, the mechanical property of asphalt mixture, including the damage evolution process was simulated. Thus, it can implement coincident deformation among different scale models. Results show that the model can qualitatively simulate the mechanical property of asphalt mixture. It also can be used to analyze different components and evaluate property of asphalt mixture.

关 键 词：道路工程 沥青混合料 多尺度模拟 损伤演化 有限元 力学性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]