硅酸盐通报2024，Vol.43Issue(11)：4061-4071,11.
聚丙烯纤维增强水泥基复合材料单轴拉伸损伤本构模型研究
Uniaxial Tensile Damage Constitutive Model of Polypropylene Fiber Reinforced Engineered Cementitious Composites
摘要
Abstract
Polypropylene fiber reinforced engineered cementitious composite(PP-ECC)is a ductile material with good properties,low cost and wide application prospect.In this study,the impact of varying fiber content on the tensile mechanical behavior of PP-ECC was explored,encompassing parameters such as initial cracking stress and strain,peak stress and strain,stress-strain relationship,and elastic modulus.Drawing from uniaxial tensile tests,damage factors were defined and a constitutive model tailored to the tensile characteristics of PP-ECC was formulated,leveraging existing engineered cementitious composite(ECC)damage constitutive models and theories.Refinements were made to the fitting function of damage factor,employing a univariate 6th-degree function and utilizing Origin and Matlab for parameter calculation and identification within the damage factor function.The optimized constitutive model demonstrates enhance alignment with experimental results,marking a significant improvement in model accuracy.关键词
工程水泥基复合材料/聚丙烯纤维/单轴拉伸/损伤因子/本构模型/应力-应变关系Key words
engineered cementitious composite/polypropylene fiber/uniaxial tensile/damage factor/constitutive model/stress-strain relationship分类
建筑与水利引用本文复制引用
贾毅,赵强,韦朝宽,宋浩博,李唐伟,沈先桃..聚丙烯纤维增强水泥基复合材料单轴拉伸损伤本构模型研究[J].硅酸盐通报,2024,43(11):4061-4071,11.基金项目
国家自然科学基金(52068037) （52068037）
