冲击荷载作用下混凝土缺陷模型细观损伤演化定量分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (11) : 172-177.

论文

冲击荷载作用下混凝土缺陷模型细观损伤演化定量分析

覃源1，柴军瑞1,2，党发宁1

作者信息 +

Quantitative research of damage evolution of defects concrete model under the impact load

QIN Yuan1, CHAI Jun-rui1,2,DANG Fa-ning1

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文章历史 +

摘要

通过对传统数字混凝土模型的改良，建立了带有内部缺陷的数字混凝土模型，在对内部缺陷分区的基础上，结合双折线损伤演化模型，对试件在三种速率冲击荷载作用下的细观损伤、应力和应变的分布规律进行了讨论，并对结果进行了定量描述，建立了混凝土材料细观损伤与宏观裂纹演化之间的联系，为混凝土材料的物理试验和在工程中的应用起到了辅助作用。

Abstract

The numerical model of concrete which contains the internal defects is established based on the traditional random aggregate model. The model was partitioned into three parts, and based on the Conduplicate-line damage evolvement model, the distribution law of damage, strain and stress under three different kinds of impact load was discussed, and the Quantitative Research was made. The relationship of mesoscopic damage and macroscopic crack evolution was built. This research provides an auxiliary role for both the physical test and engineering practice of concrete material.

导出引用

覃源;柴军瑞;党发宁. 冲击荷载作用下混凝土缺陷模型细观损伤演化定量分析[J]. 振动与冲击, 2014, 33(11): 172-177

QIN Yuan;CHAI Jun-rui;DANG Fa-ning. Quantitative research of damage evolution of defects concrete model under the impact load[J]. Journal of Vibration and Shock, 2014, 33(11): 172-177