验证了钢筋混凝土锥形柱静力性能的三维有限元建模

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
J. A. Kadhim, S. R. Al. Zaidee
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引用次数: 0

摘要

摘要本文旨在模拟钢筋混凝土(RC)锥形柱在静荷载作用下的性能。本研究使用的实验数据来源于文献。其中两根模拟柱为细长柱,在单轴偏心荷载作用下进行了试验。第三个是短柱,进行了同心试验。使用Abaqus软件中提供的混凝土损伤塑性(CDP)模型,该模型考虑了混凝土在压缩和拉伸下的刚度退化。采用Abaqus分析用户手册给出的混凝土断裂模量和开裂应变值作为拉筋参数。采用改进的Hognestad模型计算混凝土的抗压性能。静态风险分析进行了激活的几何非线性。模型1、模型2和模型3的数值破坏荷载分别为试验破坏荷载的100.125、99.297和102.16%。数值计算结果与试验结果的吻合,证实了CDP模型模拟混凝土行为的有效性,也揭示了数值模型的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Validated three-dimensional finite element modeling for static behavior of RC tapered columns
Abstract This article aims to simulate the behavior of reinforced concrete (RC) tapered columns subjected to static loads. The experimental data used in the study are from the literature. Two of the simulated columns are slender columns tested under uniaxial eccentric loads. The third one is a short column and was tested concentrically. The concrete damaged plasticity (CDP) model offered in the Abaqus software, which accounts for stiffness degradation of concrete in both compression and tension, was used. The modulus of rupture of concrete and the value of the cracking strain proposed by the Abaqus analysis user’s manual were used as the parameters of tension stiffening. The modified Hognestadʼs model was used for the compressive behavior of concrete. The Static Riks analyses were performed with an activated geometric nonlinearity. The numerical failure load is 100.125, 99.297, and 102.16% of the experimental failure load for Models 1, 2, and 3, respectively. The agreement of the numerical results with the experimental results has confirmed the efficiency of the CDP model to simulate the concrete behavior, and has also revealed the validity of the numerical models.
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来源期刊
Journal of the Mechanical Behavior of Materials
Journal of the Mechanical Behavior of Materials Materials Science-Materials Science (miscellaneous)
CiteScore
3.00
自引率
11.10%
发文量
76
审稿时长
30 weeks
期刊介绍: The journal focuses on the micromechanics and nanomechanics of materials, the relationship between structure and mechanical properties, material instabilities and fracture, as well as size effects and length/time scale transitions. Articles on cutting edge theory, simulations and experiments – used as tools for revealing novel material properties and designing new devices for structural, thermo-chemo-mechanical, and opto-electro-mechanical applications – are encouraged. Synthesis/processing and related traditional mechanics/materials science themes are not within the scope of JMBM. The Editorial Board also organizes topical issues on emerging areas by invitation. Topics Metals and Alloys Ceramics and Glasses Soils and Geomaterials Concrete and Cementitious Materials Polymers and Composites Wood and Paper Elastomers and Biomaterials Liquid Crystals and Suspensions Electromagnetic and Optoelectronic Materials High-energy Density Storage Materials Monument Restoration and Cultural Heritage Preservation Materials Nanomaterials Complex and Emerging Materials.
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