Optimization of asphalt pavement modeling based on the Global-Local 3D FEM approach

被引：19

作者：

Yin, Hao ^{[1
]}

Stoffels, Shelley ^{[1
]}

Solaimanian, Mansour ^{[1
]}

机构：

[1] Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA

来源：

ROAD MATERIALS AND PAVEMENT DESIGN | 2008年 / 9卷 / 02期

关键词：

finite element modeling; Global-Local; asphalt pavement; viscoelastic; pavement response;

D O I：

10.3166/RMPD.9.345-355

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents the use of three dimensional (3D) finite element modeling (FEM) techniques to determine asphalt pavement response to loading. In mechanistic empirical pavement design, the properties of materials used in pavement layers must be specified before the pavement response to imposed loads can be determined. A numerical method is used to obtain the relaxation modulus of linear viscoelastic materials, such as asphalt concrete, front the dynamic modulus measured on specimens procured from the field. Linear elastic behavior is assumed for granular materials. In addition, regarding finite element modeling, key factors such as model geometry, material properties, load and boundary conditions, element hype, and mesh refinement are discussed in detail. The adopted Global-Local (GL) FEM approach is capable of simulating pavement responses to multiple axle loads with different load configurations, speed, and temperatures.

引用

页码：345 / 355

页数：11

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