基于ABAQUS塑性损伤模型损伤因子的仿真分析

Simulation Analysis of Damage Factor Based on ABAQUS Damaged Plasticity Model

依据现行的《混凝土结构设计规范》(GB 50010-2010)提供的混凝土单轴应力应变曲线,结合能量等价原理,推导出适用于ABAQUS软件计算中混凝土塑性损伤模型损伤因子的计算公式。通过利用ABAQUS软件对文献中一榀2层双跨钢筋混凝土框架进行非线性分析,将框架破坏时的有限元分析结果与文献试验结果进行对比,框架最后破坏现象一致;并将框架有限元分析层间位移结果和文献试验数据进行对比,吻合度较好,从而验证了文中所述混凝土塑性损伤模型中损伤因子的计算公式的可靠性,可为使用ABAQUS软件模拟钢筋混凝土结构在荷载作用下刚度退化提供参数借鉴意义。

According to the current uniaxial stress-strain curve of concrete provided in the current“Specifications for Design of Concrete Structures”GB 50010-2010,combined with the principle of energy equivalence,the calculation formula for the damage factors of plastic concrete damage models in ABAQUS software calculations is deduced.By using ABAQUS software to perform a nonlinear analysis of a two-story double-span reinforced concrete frame in the literature,the finite element analysis results of the frame failure are compared with the results of the literature test.The final failure of the frame is consistent;and the frame finite element analysis layer is used.The comparison between the displacement results and the literature test data shows a good agreement,which verifies the reliability of the calculation formula of the damage factor in the concrete plastic damage model described in this paper.It can simulate the stiffness degradation of the reinforced concrete structure under load by using ABAQUS software.,which provides reference for the values of the parameters.Parameters for reference.