沥青路面粘弹性有限元模拟方法

基于蠕变试验,测定沥青混合料的蠕变曲线,通过数学方法求得松弛模量曲线,并通过非线性拟合方法求得有限元软件ABAQUS中用于描述沥青混合料粘弹性性质的prony级数,通过对路面模型进行摄动分析,结合粘弹性材料时温等效性质,建立路面有限元动态分析模型,从而为研究移动荷载与温度荷载作用下,沥青混凝土路面的粘弹性力学响应分析提供了方法和基础。

Finite Elements Analogy Method for Viscoelasticity of Asphalt Pavement

The creeping curve of asphalt mixture is testified with creeping test.Curve of relaxation modulus is solved with mathematic methods and the prony level used to describe the viscoelasticity feature of asphalt concrete in the finite element software-ABAQUS is solved with non-linear fitting method.Through perturbation analysis to pavement model and combined with features of viscoelasticity,such as time temperature,the finite elements dynamic model of pavement is established,and thus provides methods and basis ...