Numerical modelling of tyre–pavement-interaction phenomena: constitutive description of asphalt behaviour based on triaxial material tests
Numerical modelling of tyre–pavement-interaction phenomena: constitutive description of asphalt behaviour based on triaxial material tests
复制标题
DOI：
10.1080/14680629.2014.985246
复制
发表时间：
2015-01
影响因子：
3.7
通讯作者：
C. Zopf;I. Wollny;M. Kaliske;A. Zeißler;F. Wellner
中科院分区：
文献类型：
--
作者：
C. Zopf;I. Wollny;M. Kaliske;A. Zeißler;F. Wellner
作为随后的轮胎路面相互作用现象的数值模拟的基础上，沥青材料的行为的充分代表性是必需的。因此，在本出版物中，重复加载三轴试验和一个新的方法来解释试验结果的实验研究。在此基础上，选择了一个考虑弹性、粘性和塑性特性并允许大应变理论的沥青材料模型，用于有限元法的数值模拟。相关的材料参数确定的基础上，通过优化程序的实验数据。以一个三轴应力状态下的沥青试件为例，进行了Cole-Cole图数据点的数值模拟和计算。实验和数值计算结果的比较表明，良好的协议。因此，材料模型和参数可随后用于结构路面计算。
As basis for the subsequent numerical modelling of tyre–pavement-interaction phenomena, an adequate representation of asphalt material behaviour is required. Therefore, in the present publication, experimental investigations by the repeated load triaxial test and a new approach of the interpretation of the test results are presented. Based on these results, an appropriate asphalt material model that considers elastic, viscous as well as plastic properties and that allows for large strain theory is selected for the numerical modelling by finite element method. The related material parameters are identified based on the experimental data by an optimisation procedure. Exemplarily, the numerical simulation of data points of the Cole–Cole-plot and the computation of an asphalt test sample in triaxial stress state are conducted. The comparison of experimental and numerical results shows good agreement. Therefore, the material model and the parameters may be used subsequently for structural pavement computations.