纤维编织网水泥基复合材料轴拉全曲线本构模型

发布时间：2018-07-06 10:26

本文选题：纤维编织网水泥基复合材料 + 刚度衰减系数　；参考：《土木工程与管理学报》2017年02期

【摘要】：本文对纤维编织网水泥基复合材料轴拉全曲线本构模型进行了研究。针对纤维编织网增强水泥基复合材料单轴受拉破坏的四个不同阶段,建立了受拉全曲线力学模型,其中,采用刚度衰减系数描述受拉过程中刚度下降的过程,并分别给出了不同阶段的刚度衰减系数表达式,进而与现有试验结果进行了对比分析。结果表明:本文理论模型与试验结果对比吻合较好。此外,本文模型包含了受拉全过程中的下降段,能够更完整地描述纤维编织网水泥基复合材料受拉破坏全过程。本文的研究进一步明确了纤维编织网水泥基复合材料的单轴拉伸性能,可为提高构件延性的设计提供理论基础。
[Abstract]:In this paper, the axial tensile full curve constitutive model of fiber woven net cement matrix composites is studied. In view of the four different stages of uniaxial tensile failure of fiber woven mesh reinforced cement matrix composites, a tensile full curve mechanical model is established, in which the stiffness attenuation coefficient is used to describe the process of stiffness decreasing during the tensile process. The expressions of stiffness attenuation coefficient at different stages are given, and the results are compared with the existing experimental results. The results show that the theoretical model is in good agreement with the experimental results. In addition, the model in this paper includes the falling section in the whole process of tension, which can describe the whole process of tensile failure of fiber woven net cement matrix composites more completely. In this paper, the uniaxial tensile properties of fiber woven net cement matrix composites are further clarified, which can provide a theoretical basis for improving the ductility design of components.
【作者单位】：河北工业大学土木与交通学院;河北工业大学河北省工程技术研究中心;
【基金】：国家自然科学基金(51309073)
【分类号】：TU528

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