| 基于复合屈服准则的混凝土塑性损伤模型 |
| |
| 引用本文： | 常晓林,马刚,刘杏红. 基于复合屈服准则的混凝土塑性损伤模型[J]. 四川大学学报(工程科学版), 2011, 0(1) |
| |
| 作者姓名： | 常晓林 马刚 刘杏红 |
| |
| 作者单位： | 武汉大学水资源与水电工程科学国家重点实验室;武汉大学水工岩石力学教育部重点实验室;武汉大学土木建筑工程学院; |
| |
| 基金项目： | 国家自然科学基金资助项目(50909078); 武汉大学(1+4)博士研究生科研创新自主资助项目 |
| |
| 摘 要： | 引入拉伸损伤变量和剪切损伤变量来共同描述损伤对混凝土宏观力学性能的劣化,采用带拉断的Mohr-Coulomb准则作为塑性损伤模型的屈服准则以及非关联的Drucker-Parager塑性势函数,在热力学和连续损伤理论的框架内建立损伤准则和损伤演化方程,提出了一种改进的混凝土塑性损伤模型,并采用基于完全隐式的向后Eu-ler积分算法进行应力更新。在ABAQUS平台上,采用UMAT进行改进的塑性损伤本构模型的二次开发,并进行了单轴和多轴数值验证。计算结果表明:数值结果和理论曲线及试验成果吻合很好,验证了本构模型的合理性。
|
| 关 键 词： | 混凝土塑性损伤 复合屈服准则 Rankine Mohr-Coulomb 隐式向后欧拉积分算法 |
Damaged Plasticity Model For Concrete Structure Based on Composite Yield Criterion |
| |
| CHANG Xiao-lin,MA Gang,LIU Xing-hong. Damaged Plasticity Model For Concrete Structure Based on Composite Yield Criterion[J]. Journal of Sichuan University (Engineering Science Edition), 2011, 0(1) |
| |
| Authors: | CHANG Xiao-lin MA Gang LIU Xing-hong |
| |
| Affiliation: | CHANG Xiao-lin1,2,MA Gang1,LIU Xing-hong2,3(1.State Key Lab.of Water Resources and Hydropower Eng.Sci.,Wuhan Univ.,Wuhan 430072,China,2.Key Lab.of Ministry of Education for Rock Mechanics in Hydraulic Structural Eng.,3.School of Civil and Architectural Eng.,China) |
| |
| Abstract: | In view of the characteristics of stress and damage states of concrete structures,tensile and shear damage variables were introduced to describe the influence of micro-crack on the degradation of micromechanical properties.A novel plastic-damage constitutive model that employed a yield criterion based on Mohr-Coulomb criterion with Rankine was proposed.Additionally,the nonassociated flow rule was assumed and the Drucker-Parager function was adopted.The implicit backward Euler integration algorithm was appli... |
| |
| Keywords: | concrete plasticity damage composite yield criterion Rankine Mohr-Coulomb implicit backward-Euler algorithm |
| 本文献已被 CNKI 等数据库收录！ |
|
