| 用于准脆性材料破坏过程数值模拟的虚拟连接单元法 |
| |
| 引用本文： | 徐春晖,袁丽,李明瑞.用于准脆性材料破坏过程数值模拟的虚拟连接单元法[J].固体力学学报,2011,32(5):513-519. |
| |
| 作者姓名： | 徐春晖 袁丽 李明瑞 |
| |
| 作者单位： | 中国农业大学 |
| |
| 基金项目： | 国家自然科学基金项目(10872214); 留学回国基金项目资助 |
| |
| 摘 要： | 将有限变形单元与虚拟连接单元相结合,用于模拟准脆性材料破坏过程.首先基于精确的有限变形理论,采用第二类Piola-Kirchhoff应力与Green-Lagrange应变作为能量共轭的应力、应变对,推导出虚拟连接单元的单元刚度矩阵；通过数值算例,验证该单元的正确性与合理性,给出虚拟连接单元高度的取值范围,并与无此单元时...
|
| 关 键 词： | 有限变形 虚拟连接单元 数值模拟 准脆性材料 破坏 |
| 收稿时间： | 2010-06-11 |
VIRTUAL JOINT ELEMENT FOR SIMULATING FAILURE PROCESS OF QUASI-BRITTLE MATERIALS |
| |
| Chunhui Xu,Li Yuan,Mingrui Li.VIRTUAL JOINT ELEMENT FOR SIMULATING FAILURE PROCESS OF QUASI-BRITTLE MATERIALS[J].Acta Mechnica Solida Sinica,2011,32(5):513-519. |
| |
| Authors: | Chunhui Xu Li Yuan Mingrui Li |
| |
| Institution: | Chunhui Xu Li Yuan Mingrui Li(College of Science,China Agricultural University,Beijing,100083) |
| |
| Abstract: | The combination of finite deformation element and virtual joint element is introduced to simulate the failure process of quasi-brittle materials.Based on accurate finite deformation theory,with the second Piola-Kirchhoff stress and Green-Lagrange strain as the energy conjugate stress and strain,the stiffness matrix of virtual joint element is derived.A numerical example is given to verify this virtual joint element,and some recommendations are offered for the range of height of the element.This method is fu... |
| |
| Keywords: | finite deformation virtual joint element numerical simulation quasi-brittle material failure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《固体力学学报》浏览原始摘要信息 |
| 点击此处可从《固体力学学报》下载免费的PDF全文 |
