| 混凝土分段曲线损伤本构模型及其数值验证 |
| |
| 引用本文： | 杨璐,朱浮声,王功江,沈新普.混凝土分段曲线损伤本构模型及其数值验证[J].沈阳建筑工程学院学报(自然科学版),2007,23(4):562-566. |
| |
| 作者姓名： | 杨璐 朱浮声 王功江 沈新普 |
| |
| 作者单位： | 东北大学资源与土木工程学院，东北大学资源与土木工程学院，辽宁省建筑设计研究院，沈阳工业大学建工学院 辽宁沈阳110004，沈阳工业大学建工学院，辽宁沈阳110023，辽宁沈阳110004，辽宁沈阳110005，辽宁沈阳110023 |
| |
| 基金项目： | 国家自然科学基金;辽宁省教育厅资助项目 |
| |
| 摘 要： | 目的对引入损伤变量的混凝土结构进行损伤分析.方法结合混凝土规范中混凝土受拉应力-应变曲线数据和能量等效假设;在ABAQUS有限元分析软件中采用损伤模型进行结构分析,新的损伤演化方程中的材料参数值由试验标定;对混凝土试件的单轴拉伸行为和三点弯曲行为进行数值验证.结果提出了新的混凝土分段曲线损伤模型;单轴拉伸梁最大损伤值为0.9329,三点弯曲梁最大损伤值0.989;模型损伤演化结果符合试验趋势.结论较好地描述我国现行混凝土规范中给出的混凝土材料本构关系,新的混凝土损伤本构模型可以用于混凝土结构的损伤分析.
|
| 关 键 词： | 混凝土分段曲线 本构模型 损伤 数值验证 |
| 文章编号： | 1671-2021（2007）04-0562-05 |
| 修稿时间： | 2006-12-20 |
A Tension Damage Model with Subsection Curve of Concrete and Its Numerical Verification |
| |
| YANG Lu,ZHU Fusheng,WANG Gongjiang,SHEN Xinpu.A Tension Damage Model with Subsection Curve of Concrete and Its Numerical Verification[J].Journal of Shenyang Archit Civil Eng Univ: Nat Sci,2007,23(4):562-566. |
| |
| Authors: | YANG Lu ZHU Fusheng WANG Gongjiang SHEN Xinpu |
| |
| Affiliation: | 1. Resources and Civil Engineering College, Northeastern University, Shenyang 110001, China; 2. School of Architecture and Engineering, Shenyang University of Technology, Shenyang 110023, China; 3. Institute of Architecture Design of Liaoning Province, Shenyang 110005, China |
| |
| Abstract: | Damage variable was applied to analyze the damage of the concrete in order to describe the standard of the constitutive relation of the concrete.Based on this,a new damage model with subsection curve of concrete was proposed with the result of the strain-stress curve and the hypotheses of energy equivalent.In the new damage evolvement equation,the material parameters were gained from the experiments which were rigorous theoretically.The uniaxial tensional specimen and three-point bending specimen were calculated in ABAQUS with this damage model,which shows that the maximum value of the damage was 0.9329 in the uniaxial tensional specimen and 0.989 in the three-point bending specimen.It also offered a new method to analyze the damage of concrete dynamically. |
| |
| Keywords: | ABAQUS |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
