Analysis of Nonlinear Mechanical Properties of a Cement-Based Fiber Reinforced Material by Mesoscopic Structural Analysis Method

细观结构分析法分析水泥基纤维增强材料的非线性力学性能

• 批准号: 08650528
• 负责人: TSUBAKI Tatsuya
• 金额: $ 1.47万
• 依托单位: YOKOHAMA NATIONAL UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650528/
• 关键词: Steel Fiber Renforced Concrete; mechanical Property; Structural Analysis; Constitutive Law; Parallel Computation; Modeling

In case of modeling the constitutive relationship of fiber reinforced material, it is imporant to know the nonlinear bond behavior between fiber and matrix. The objective of this study is to obtain basic data to develop a general constitutive relationship based on the bond behavior of each steel fiber embedded in high strength steel fiber reinforced concrete (SFRC). The summary of this study is shown as follows.1. Experiment on deformational property of SFRC :The behavior of steel fiber subject to uniaxial tension and shear was investigated with fiber type (straight, hooked and anchored fibers) and fiber angle (0,30,45,60 degrees) as parameters. The effect of fiber type and fiber angle on the force-displacement relationship was clarified.2. Modeling of deformational property of steel fiber :The force-displacement relationships of steel fiber under uniaxial tension and shear were modeled by the multilinear model.3. Development of simulation method for fiber reinforced material :It was confirmed that an analysis method suitable for parallel computation can be developed by combining the simulation method using microstructural unit elements with the domain decomposition method.

在对纤维增强材料的本构关系进行建模时，了解纤维与基体之间的非线性粘结行为是非常重要的。本研究的目的是获得基础数据，以建立基于高强钢纤维混凝土(SFRC)中每种钢纤维的粘结性能的一般本构关系。本研究的总结如下所示。钢纤维混凝土变形性能试验：以纤维类型(直纤维、钩状纤维和锚固纤维)和纤维角度(0、30、45、60度)为参数，研究钢纤维在单轴拉伸和剪切作用下的性能。阐明了纤维类型和纤维角度对力-位移关系的影响。钢纤维变形特性建模：采用多线性模型模拟了钢纤维在单轴拉伸和剪切作用下的力-位移关系。纤维增强材料模拟方法的发展：将细观单元模拟方法与区域分解方法相结合，可以开发出一种适合并行计算的分析方法。

项目成果

T.Tsubaki, S.Sumitro and H.Shoji: "Modeling of Tensile and Shear Mechanical Properties of Steel Fiber Reinforced Concrete" Transactions of the Japan Concrete Institute. Vol.19 (in press). (1997)

T.Tsubaki、S.Sumitro 和 H.Shoji：“钢纤维混凝土拉伸和剪切力学性能的建模”日本混凝土协会会刊。

椿龍哉: "鋼繊維補強コンクリートの引張およびせん断特性とモデル化" コンクリート工学論文集. 第8巻第1号. 233-241 (1997)

Tatsuya Tsubaki：“钢纤维混凝土的拉伸和剪切性能和建模”混凝土工程杂志第 8 卷第 1. 233-241 (1997)。

椿 龍哉: "鋼繊維補強コンクリートの引張およびせん断特性とモデル化" コンクリート工学論文集. Vol.8,No.1. 233-241 (1997)

Tatsuya Tsubaki：“钢纤维混凝土的拉伸和剪切性能和建模”混凝土工程杂志，第 8 卷，第 233-241 期（1997 年）。

T.Tsubaki and S.Sumitro: "Effect of Fiber Type on the Mechanical Behavior of Steel Fiber Reinforced Concrete" Proc.of the Sixth East Asia-Pacific Conf.on Struct.Eng. & Const. (EASEC-6). Vol.3. 1959-1964 (1998)

T.Tsubaki 和 S.Sumitro：“纤维类型对钢纤维混凝土机械性能的影响”第六届东亚太平洋结构工程会议论文集

S.Sumitro: "Micromechanical Constitutive Relationship of Steel Fiber Reinforced Concrete" Transactions of the Japan Concrete Institute. Vol.18. 159-166 (1996)

S.Sumitro：《钢纤维增强混凝土的微观力学本构关系》日本混凝土协会会刊。