| 统一弹塑性本构模型在ABAQUS中的开发与应用 |
| |
| 引用本文： | 潘晓明,孔娟,杨钊,刘成.统一弹塑性本构模型在ABAQUS中的开发与应用[J].岩土力学,2010,31(4):1092-1098. |
| |
| 作者姓名： | 潘晓明 孔娟 杨钊 刘成 |
| |
| 作者单位： | 1.同济大学 地下建筑与工程系，上海 200092；2.同济大学 岩土及地下工程教育部重点实验室，上海 200092 |
| |
| 摘 要： | 基于统一弹塑性本构模型的有限元理论格式，根据ABAQUS的UMAT格式要求，编制相应的接口程序，将统一弹塑性本构模型引入ABAQUS中。采用退化的统一强度模型（ 时，为Mohr-Coulomb模型）与ABAQUS自带的Mohr-Coulomb模型，对单轴试验和圆形硐室进行弹塑性分析，验证所开发材料子程序的正确性及高效性。考虑到统一强度模型的一般情况（ ）和屈服面硬化条件，对圆形硐室进行弹塑性计算，得到应力场的变化规律。所提出的研究思路具有普遍性，为采用ABAQUS平台进行本构模型的二次开发提供了借鉴和参考。
|
| 关 键 词： | 统一强度理论 屈服面 流动矢量 奇异点 应力拉回算法 ABAQUS |
| 收稿时间： | 2009-05-27 |
Secondary development and application of unified elastoplastic constitutive model to ABAQUS |
| |
| PAN Xiao-ming,KONG Juan,YANG Zhao,LIU Cheng.Secondary development and application of unified elastoplastic constitutive model to ABAQUS[J].Rock and Soil Mechanics,2010,31(4):1092-1098. |
| |
| Authors: | PAN Xiao-ming KONG Juan YANG Zhao LIU Cheng |
| |
| Institution: | 1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China |
| |
| Abstract: | Based on finite element theoretical scheme of unified elastoplastic constitutive model, and according to the UMAT interface requirement of ABAQUS, the corresponding UMAT codes are programmed, which will be called by the main analytical module of ABAQUS. Adopting degenerative model of the unified strength ( ，Mohr-Coulomb model) and the built-in Mohr-Coulomb model of ABAQUS, the uniaxial tests and circular chamber are analyzed to verify the correctness and efficiency of the developed material subroutine. Finally, considering the general situation form of unified elastoplastic constitutive model ( ) and hard condition of yield surface, which are not available in ABAQUS software, circular chamber is simulated and variational discipline of stress field is obtained. The provided basic procedures and programming essentials of the UMAT redefining in ABAQUS are universal and can offer a reference for other developers. |
| |
| Keywords: | ABAQUS |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
