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首页> 外文期刊>中国科学:物理学 力学 天文学（英文版） >Research on nonlinear constitutive relationship of permanent deformation in asphalt pavements
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Research on nonlinear constitutive relationship of permanent deformation in asphalt pavements

机译：沥青路面永久性变形的非线性本构关系研究

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To predict correctly the rut depths in asphalt pavements,a new nonlinear viscoelastic-elastoplastic constitutive model of permanent deformation in asphalt pavements is presented.The model combines a generalized Maxwell model with an elastoplastic one.Then from the creep theory,the linear and nonlinear constitutive equations of the generalized Maxwell model are obtained.From the nonlinear finite element method for the rutting of the asphalt pavement,the rut depths of 4 asphalt-aggregate mixtures are obtained.And the results are compared with the ones from the finite element method by SHRP and the experiments by SWK/UN.The results in this paper are better than the ones by SHRP,and agree with the ones of the experiment by SWK/UN.This shows that the nonlinear viscoelastic-elastoplastic constitutive model,which is presented in this paper for the rutting of the asphalt pavement,is effective.The properties,such as nonlinear elasticity,plasticity,viscoelasticity and nonlinear viscoelasticity,which affect the rutting of an asphalt pavement,can be shown in the model.And the characteristics of the permanent deformation of the asphalt pavement can be presented entirely in the model.
机译：为了预测沥青路面中的车辙深度，呈现了沥青路面中永久变形的新的非线性粘弹性 - 弹性构成模型。该模型将广义麦克斯韦模型与弹塑性塑料相结合。该从蠕变理论，线性和非线性构成获得了广义麦克风模型的方程。从非线性有限元方法中获得沥青路面的车辙，获得了4个沥青聚集体混合物的车辙深度。并通过SHRP与来自有限元方法的结果进行比较通过SWK / UN的实验。本文的结果优于SHRP的结果，并与SWK / UNS的实验同意。本文表明非线性粘弹性 - 弹性构成型模型，其介绍纸张沥青路面的纸张，是有效的。诸如非线性弹性，可塑性，粘弹性和非线性粘弹性的性能，W HILH影响沥青路面的车辙，可以在模型中显示。并且可以完全在模型中完全呈现沥青路面永久变形的特性。

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