ABAQUS钢与混凝土复合材料模型的二次开发

为了找出结构的薄弱位置,往往需要对各种复杂的建筑结构进行整体结构层次上的弹塑性数值模拟。为提高建模以及数值计算效率,需要采用梁单元计算模型模拟钢筋、钢骨以及钢管混凝土梁柱等复杂的构件。在混凝土弹塑性损伤模型的基础上,基于ABAQUS平台开发了能够描述以上复杂梁柱构件力学行为的梁单元复合材料模型。模型的提出使整体结构的弹塑性数值计算可以采用较为简单的梁单元和板壳单元模拟,提高了超高层建筑结构整体弹塑性分析的效率。

Development of Material Model of the Steel Reinforced Concrete Beam in ABAQUS

To find the weak part of the structure,numerical simulation is usually carried out to analyze the seismic response of some complicated structures.Some complicated members,such as reinforced concrete beam and column with rebar and steel pipe should be simulated with beam elements in FEA software.But the concrete damage plasticity model is greatly limited when beam elements are used and it can't represent the complicated response of the beam and column with rebar and other steel strings.The material model used to represent the mechanical behavior of the concrete beam with rebar is developed in ABAQUS with user subroutine VUMAT.It improves the efficiency of the dynamic response analysis of the structures with whole model.