帮助 关于我们

返回检索结果

三轴围压下砂浆弹塑性损伤变形过程的细观力学分析
MICROMECHANICAL ANALYSIS OF MORTAR IN ELASTO-PLASTIC DAMAGE DEFORMATION PROCESS UNDER TRIAXIAL HYDROSTATIC COMPRESSION

查看参考文献18篇

刘芳 1   付强 1   陈岑 2   梁乃刚 2  
文摘 基于对泛函势和Cauchy-Born准则,抽象出弹簧束构元和体积构元,组集两种构元的力学响应,给出了材料的弹性损伤本构关系; 考虑滑移作为主要的塑性变形机制,提出了滑移构元,给出了材料的塑性本构关系;利用变形分解机制,得到了由三种构元共同描述的弹塑性损伤本构关系。阐述了在给定应变条件下弹塑性损伤本构关系的计算迭代流程。利用单轴拉伸算例详细阐述了模型参数的标定过程。对有围压作用下砂浆材料的压缩行为进行了模拟,从材料细观变形角度解释了随着围压增加,材料承载能力增加的现象。模型预测结果与试验结果符合较好,初步验证了模型具有处理非比例加载问题的能力。
其他语种文摘 Based on pair functional potentials and Cauchy-Born rule, spring-buddle components and cubage component were abstracted. Integrating the mechanical responses of the two kinds of components, the paper derived the corresponding elasto-damage constitutive relation. Recognizing that the slip is the main plastic deformation mechanism, the paper proposed slip components to describe the plastic deformation, and then derived the corresponding plastic constitutive relation. Based on the decomposition of deformations, the elasto-plastic damage constitutive relation described by three kinds of components was derived. The numerical iteration algorithm under given strain was presented. The calibration of model parameters was illustrated through a tensile numerical case. Simulation of mortar under hydrostatic compression was performed. It is explained from the point of the mesoscopic deformation that the bearing capacity increases as the hydrostatic pressure increases. The numerical results agree well with experimental data, which demonstrates that this model has the capability to deal with nonproportional loading preliminarily.
来源 工程力学 ,2011,28(10):158-164,196 【核心库】
关键词 弹塑性损伤本构关系 ; 三轴围压 ; 构元组集模型 ; 非比例加载 ; 砂浆
地址

1. 中国科学院力学研究所, 非线性力学国家重点实验室, 北京, 100190  

2. 中国科学院力学研究所, 中国科学院非线性力学国家重点实验室, 北京, 100190

语种 中文
文献类型 研究性论文
ISSN 1000-4750
学科 力学
基金 国家自然科学基金项目
文献收藏号 CSCD:4320144

参考文献 共 18 共1页

1.  薛志刚. 水泥砂浆在围压下的动态力学性能. 工程力学,2008,25(12):184-188,201 被引 14    
2.  Litewka A. Damage, plasticity and failure of ceramics and cementitious composites subjected to multi-axial state of stress. International Journal of Plasticity,2006,22(11):2048-2065 被引 1    
3.  Papanikolaou V K. Confinement-sensitive plasticity constitutive model for concrete in triaxial compression. International Journal of Solids and Structures,2007,44(21):7021-7048 被引 11    
4.  杨圣奇. 大理岩三轴压缩变形破坏与能量特征研究. 工程力学,2007,24(1):136-142 被引 77    
5.  闫东明. 三向应力状态下混凝土动态强度和变形特性研究. 工程力学,2007,24(3):58-64 被引 23    
6.  沈新普. 混凝土损伤塑性本构模型研究. 岩土力学,2004,25(增刊2):13-16 被引 4    
7.  Wert J A. Revealing deformation microstructures. Materials Today,2007,10(9):24-32 被引 2    
8.  Pensee V. Micromechanics of anisotropic brittle damage: comparative analysis between a stress based and a strain based formulation. Mechanics of Materials,2003,35(8):747-761 被引 3    
9.  Gao H. Numerical simulation of crack growth in an isotropic solid with randomized internal cohesive bonds. Journal of the Mechanics and Physics of Solids,1998,46(2):187-218 被引 10    
10.  Miller R. Quasicontinuum models of fracture and plasticity. Engineering Fracture Mechanics,1998,61(3/4):427-444 被引 17    
11.  Deng S C. Component assembling model and its application to quasi-brittle damage. Theoretical and Applied Fracture Mechanics,2006,46(3):232-242 被引 4    
12.  Deng S C. Validation of component assembly model and extension to plasticity. Theoretical and Applied Fracture Mechanics,2007,47(3):244-259 被引 7    
13.  Zhang J. Study of the damage-induced anisotropy of quasi-brittle materials using the component assembling model. International Journal of Damage Mechanics,2008(17):197-221 被引 1    
14.  邓守春. 构元组集模型及其对材料弹、塑性损伤变形过程的描述,2007 被引 2    
15.  Crystals Phillips R. defects and microstructuresmodeling across scales,2001 被引 1    
16.  Ericksen J L. The cauchy and born hypotheses for crystals, in Phase transformations and material instabilities in solids,1984 被引 1    
17.  Lemaitre J. A continuous damage mechanics model for ductile fracture. Journal of Engineering Materials and Technology,1985,107(1):83-89 被引 218    
18.  Litewka A. Load-induced oriented damage and anisotropy of rock-like materials. International Journal of Plasticity,2003,19(12):2171-2191 被引 2    
引证文献 1

1 刘佳亮 高压水射流冲蚀混凝土破碎区演进特征及裂纹扩展规律研究 振动与冲击,2019,38(24):131-137
被引 6

显示所有1篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护:中国科学院文献情报中心
地址:北京中关村北四环西路33号 邮政编码:100190 联系电话:(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号