基于Bingham模型的蠕变损伤模型及其参数辨识

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英文篇名：Creep Damage Model Based on Bingham Model and Its Parameter Identification 作者：刘陈林 ; 王长柏 ; 章大业 ; 崇庆高 英文作者：LIU Chenlin;WANG Changbo;ZHANG Daye;CHONG Qinggao;School of Civil and Architectural Engineering, Anhui University of Science and Technology; 关键词：蠕变 ; Bingham模型 ; 弹塑性损伤 ; 非线性拟合 英文关键词：creep;;the Bingham model;;elastic-plastic damage;;nonlinear fitting 中文刊名：安徽理工大学学报(自然科学版) 英文刊名：Journal of Anhui University of Science and Technology(Natural Science) 机构：安徽理工大学土木建筑学院; 出版日期：2019-03-15 出版单位：安徽理工大学学报(自然科学版) 年：2019 期：02 基金：高等学校博士学科点专项科研基金资助项目(20123415120004);; 贵州省交通运输厅科技基金资助项目(2015122046,2016121032) 语种：中文; 页：48-52 页数：5 CN：34-1220/N ISSN：1672-1098 分类号：TU45

摘要

为了更好的描述岩石蠕变全过程,在Bingham模型的基础上,引入非线性函数和弹塑性损伤体,建立一种新的蠕变损伤模型,并推导出其蠕变本构方程。通过将推导出的岩石蠕变本构方程与砂岩三轴蠕变实验曲线进行非线性拟合,确定相关参数,并将所得模型的理论曲线与实验曲线进行对比分析,结果显示该模型对岩石蠕变各阶段的拟合效果都不错,证明了该模型的合理性与可行性。
        In order to better describe the whole process of rock creep,based on the Bingham model, this paper establishes a new rock creep damage model by introducing a nonlinear function and elastic-plastic damage body, and deduces its creep constitutive equation.The relevant parameters were obtained by nonlinearly fitting the derived creep constitutive equation with sandstone creep experimental curve, and the comparison of the theoretical curve of the model with the experimental curve was also made in this study. The results show that the model has good fitting effects on all stages of rock creep, which proves the rationality and feasibility of the model.

引文

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