基于ABAQUS显式分析梁单元混凝土材料模型开发及应用  

Development and Application of a Concrete Constitutive Model for Explicit Dynamic Beam Element in ABAQUS

作　　者：王鸿斌[1] 叶献国[1] 蒋庆[1,2] 种迅[1] 吴明[1] WANG Hongbin YE Xianguo JIANG Qing CHONG Xun WU Ming(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China)

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]华南理工大学亚热带建筑科学国家重点实验室,广州510640

出　　处：《结构工程师》2016年第4期51-57,共7页Structural Engineers

基　　金：国家自然科学基金项目(51378167;51408179);亚热带建筑科学国家重点实验室(2015ZA04);中央高校基本科研业务费专项资金资助(J2014HGBZ0137;2014HGQC003)

摘　　要：为准确合理模拟钢筋混凝土构件在大震作用下的地震反应,利用大型通用有限元软件ABAQUS提供的用户材料子程序VUMAT接口,开发了能够用于显式分析的梁单元混凝土材料本构模型。讨论了适用于ABAQUS显式分析的钢筋混凝土构件梁单元构建方法及求解拟静力和动力问题所采用的技术措施。利用所开发的材料模型,通过动力显式分析对大量试验进行了非线性数值模拟分析,并与试验结果进行比较,验证了本构模型和建模方法的可靠性。结果表明,基于ABAQUS软件所开发的混凝土材料模型具有较高的精度和较为广泛的适用性,能够较精确地模拟钢筋混凝土构件在弯矩及弯矩和轴力共同作用下的非线性行为,可以作为下一步研究的基础。In order to rationally and precisely simulate reinforced concrete （RC） member responses under severe earthquakes, a concrete constitutive model that can be used in explicit analysis was developed utilizing the subprogram VUMAT provided by ABAQUS. Modeling RC members using beam elements as well as quasi- static and dynamic analyses using ABAQUS/Explieit were discussed in detail. To verify the reliability of the developed model, inelastic dynamic explicit analyses of a large number of experiments were carried out. Comparison between test and analysis results indicated that the proposed constitutive model possesses good accuracy and wide application. The model can accurately reflect inelastic behaviors of RC members under bending moments or a combination of moments and axial forces.

关 键 词：纤维梁单元 ABAQUS 混凝土本构 有限元 

分 类 号：TU398.9[建筑科学—结构工程]