中南大学学报（自然科学版）2016，Vol.47Issue(7)：2383-2389,7.DOI:10.11817/j.issn.1672-7207.2016.07.028
三维接触面单元弹塑性损伤数值模拟分析方法
Three-dimensional elastic-plastic damage numerical simulation and analysis method for contact elements
摘要
Abstract
In light of discontinuous joints and interfaces in geotechnical engineering, a new three-dimensional nonlinear contact element model for the simulation of joints and contact problems was presented. Based on the nonlinear deformation and damage evolution characteristics of contact elements, an elastic-plastic damage numerical simulation method which takes the damage evolution process into consideration was proposed. In view of the deformation characteristics of contact elements such as opening, closing and shearing slip damage, some nonlinear phenomena like bonding, slip and cracking were simulated. The contact problem between surrounding rocks and concrete crane beam of underground powerhouse was taken as an example. The results show that concrete crane beam is of better stress condition and normal deformation distribution with the contact element model, and the basic laws conform to the actual situation, which verifies the good rationality and accuracy of the present model in engineering practice.关键词
岩土工程/非线性/接触单元/弹塑性/损伤演化/数值模拟Key words
geotechnical engineering/nonlinear/contact elements/elastic-plastic/damage evolution/numerical simulation分类
建筑与水利引用本文复制引用
邓建,肖明,谢冰冰..三维接触面单元弹塑性损伤数值模拟分析方法[J].中南大学学报（自然科学版）,2016,47(7):2383-2389,7.基金项目
国家自然科学基金重大资助项目(91215301)；国家自然科学基金资助项目(51279136,51209164)(Project(91215301) supported by the Major Program of National Natural Science Foundation of China （91215301）
Projects(51279136,51209164) supported by National Natural Science Foundation of China) （51279136,51209164）
