摘要
本文通过有限元软件ABAQUS提供的VUMAT用户子程序功能,针对纤维梁单元的混凝土和钢筋单轴材料本构关系模型进行了二次开发;并结合清华大学公开的两根钢筋混凝土独立柱和一榀钢筋混凝土框架在往复荷载作用下的推覆试验数据,建立了有限元模型,通过有限元分析和试验结果的对比,验证了本文开发应用的本构模型和分析方法在结构弹塑性分析应用中的精确性。
Using the subprogram VUMAT provided by ABAQUS,the author developed a user-defined material subroutine for concrete and steel based on fiber beam elements. FE models for numerical simulation of two single RC columns and one RC frame structure under cyclical pull-down loading conducted at Tsinghua University were developed in this paper. Comparisons between FEM results and test data indicated that constitutive models and the analysis method applied in this paper can possess good accuracy in elastic-plastic analysis of structures.
出处
《建筑结构》
CSCD
北大核心
2013年第S1期1171-1175,共5页
Building Structure
关键词
混凝土
塑性损伤
本构关系
有限元
弹塑性分析
concrete
plastic-damage
constitutive relation
elastic-plastic analysis