摘要
基于Goodman接触面单元,在Clough--Duncan双曲线关系式的基础上改进了三元件宾厄姆体,建立了结构与土接触面的弹黏塑本构模型,使用ABAQUS的FRIC子程序对该模型进行了二次开发.通过改装的应力控制式结构-土接触面剪切试验仪进行了接触面长期剪切试验,验证了该接触面本构模型.研究结果表明:结构与土接触面的弹黏塑本构模型能较好地模拟接触面的力学特性和时间效应;正应力对结构与土接触面的力学行为影响较大,正应力越大,接触面的时间效应越显著.
Based on the Goodman contact element, we improve the Bingham model on the basis of the Clough-Duncan hyperbolic equation to establish an elastic-visco-plastic constitutive model for soil-structure interface. This soil-structure interface model is developed by the FRIC subroutine of ABAQUS. A series of long-term interface shear tests are performed to verify the above model by using the stress controlled soilstructure interface shearing test apparatus. The results show that the established model is able to effectively simulate the mechanical behavior and time effect of soil-structure interface; the normal stress has greater effect on the mechanical behavior of the soil-structure interface, and the larger the normal stress, the more obvious time effect of the interface is.
作者
冯胜洋
魏丽敏
蒋复量
雷林
陈祉
FENG Shengyang;WEI Limin;JIANG Fuliang;LEI Lin;CHEN Zhi(School of Environm ental Protection and Safety Engineering, University of South China, Hengyang 421001, Hunan, China;School of Civil Engineering, Central South University, Changsha 410075, China)
出处
《力学与实践》
北大核心
2016年第5期544-549,共6页
Mechanics in Engineering
基金
湖南省教育厅科学研究项目(15C1191)
南华大学博士科研启动基金项目(2014XQD11)
衡阳市科学技术发展计划项目(2015KS06)资助
关键词
接触面
弹黏塑本构模型
接触单元
二次开发
interface
elastic-visco-plastic constitutive model
interface element
secondary development
