基于ABAQUS的钢-聚丙烯混杂纤维混凝土损伤塑性本构模型取值方法研究
发布时间：2018-11-03 17:45
【摘要】：该文基于ABAQUS有限元软件中的混凝土损伤塑性模型(CDPM),研究钢-聚丙烯混杂纤维混凝土的CDPM本构参数的取值方法,包括屈服面函数、塑性势能函数中参数的确定,以及单轴应力-应变关系的定义,并分析不同CDPM本构参数对数值结果的影响。通过对纤维混凝土材料的典型多轴加载力学行为以及混杂纤维混凝土柱构件的抗震性能进行了数值模拟并与文献试验结果进行对比,验证该取值方法的合理性及适用性。结果表明,采用CDPM并选择适当的本构参数能够准确地描述钢-聚丙烯混杂纤维混凝土的非线性力学行为,该方法能够为纤维混凝土结构在复杂荷载状态下的精细化设计与分析提供参考。
[Abstract]:Based on the damage plastic model of concrete in ABAQUS finite element software, this paper studies the method of determining the CDPM constitutive parameters of steel-polypropylene hybrid fiber concrete, including the determination of the yield surface function and the parameter in the plastic potential energy function. The definition of uniaxial stress-strain relationship and the influence of different CDPM constitutive parameters on the numerical results are analyzed. Through the numerical simulation of the typical multi-axial loading mechanical behavior of fiber reinforced concrete material and the seismic behavior of hybrid fiber reinforced concrete column members, the rationality and applicability of the method are verified by comparing with the experimental results in literature. The results show that the nonlinear mechanical behavior of steel-polypropylene hybrid fiber concrete can be accurately described by using CDPM and selecting appropriate constitutive parameters. This method can be used as a reference for fine design and analysis of fiber reinforced concrete structures under complex loads.
【作者单位】： 武汉大学土木建筑工程学院;武汉大学岩土与结构工程安全湖北省重点实验室;
【基金】：国家自然科学基金项目(51608397,51508425) 湖北省自然科学基金项目(2015CFB171)
【分类号】：TU528.572
[Abstract]:Based on the damage plastic model of concrete in ABAQUS finite element software, this paper studies the method of determining the CDPM constitutive parameters of steel-polypropylene hybrid fiber concrete, including the determination of the yield surface function and the parameter in the plastic potential energy function. The definition of uniaxial stress-strain relationship and the influence of different CDPM constitutive parameters on the numerical results are analyzed. Through the numerical simulation of the typical multi-axial loading mechanical behavior of fiber reinforced concrete material and the seismic behavior of hybrid fiber reinforced concrete column members, the rationality and applicability of the method are verified by comparing with the experimental results in literature. The results show that the nonlinear mechanical behavior of steel-polypropylene hybrid fiber concrete can be accurately described by using CDPM and selecting appropriate constitutive parameters. This method can be used as a reference for fine design and analysis of fiber reinforced concrete structures under complex loads.
【作者单位】： 武汉大学土木建筑工程学院;武汉大学岩土与结构工程安全湖北省重点实验室;
【基金】：国家自然科学基金项目(51608397,51508425) 湖北省自然科学基金项目(2015CFB171)
【分类号】：TU528.572
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