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混凝土拉伸断裂的细观力学模拟
引用本文:张子明,赵吉坤,倪志强.混凝土拉伸断裂的细观力学模拟[J].河海大学学报(自然科学版),2005,33(3):287-290.
作者姓名:张子明  赵吉坤  倪志强
作者单位:河海大学土木工程学院,江苏,南京,210098
基金项目:国家自然科学基金资助项目(50379004)
摘    要:应用细观力学理论,假设混凝土三相组成服从weibull分布,建立了混凝土随机分布二维结构模型,对混凝土单边裂纹拉伸数值试样进行仿真研究,得出了裂纹在砂浆、骨料及界面中的扩展路径和试件的宏观应力一应变曲线.

关 键 词:混凝土  断裂  数值模拟  随机骨料模型
文章编号:1000-1980(2005)03-0287-04
修稿时间:2005/5/26 0:00:00

Mesomechanical simulation of concrete tension fracture
ZHANG Zi-ming,ZHAO Ji-kun,NI Zhi-qiang.Mesomechanical simulation of concrete tension fracture[J].Journal of Hohai University (Natural Sciences ),2005,33(3):287-290.
Authors:ZHANG Zi-ming  ZHAO Ji-kun  NI Zhi-qiang
Abstract:It was supposed that concrete was a three-phase composite, which was composed of mortar, aggregate and their interface, and that the meso-structure of concrete followed the Weibull distribution. By use of the mesomechanical theory, a two-dimensional random distribution structural model of concrete was developed for numerical simulation of cracks in concrete specimens with tensile stresses exerted in one direction. With the model, the routes of crack extension in mortar, aggregate, and their interface, as well as the macro stress-strain curve of concrete specimens, were derived.
Keywords:concrete  fracture  numerical simulation  random aggregate model
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