Research on fracture strength distribution of brittle materials under compression

被引：0

作者：

Zhou, Qiang ^{[1
,2
]}

Xiao, Qingfei ^{[1
,2
,3
]}

Pan, Yongtai ^{[4
,5
]}

机构：

[1] College of Land and Resources Engineering, Kunming University of Science and Technology, Kunming,650093, China

[2] Provincial and Ministry Jointly Establish National Key Experiments for Clean Utilization of Complex Nonferrous Metal Resources, Kunming University of Science and Technology, Kunming,650093, China

[3] State Key Laboratory of Mineral Processing Science and Technology, Beijing General Research Institute of Mining & Metallurgy, Beijing,102628, China

[4] School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing,100083, China

[5] Engineering Research Center for the Mine and Municipal Solid Waste Recycling, China University of Mining and Technology (Beijing), Beijing,100083, China

来源：

Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology | 2022年 / 51卷 / 06期

关键词：

Brittleness - Compression testing - Compressive strength - Crushing - End effectors - Glass - Granular materials - Particle size analysis - Spheres - Weibull distribution;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to quantitatively analyze the relationship between the breakage probability and particle size and material's property, the quasi-static compression tests were carried out on typical brittle materials K9 glass and ceramic spheres, and the influence of loading rate, sample space and particle size on particle crushing characteristics was studied. The classical two-parameter Weibull distribution model was used to fit the strength of the particles, and the quantitative relationship between the parameters in the two-parameter Weibull distribution model and the particle size and material characteristics was studied. The results show that under quasi-static compression, the loading rate has no significant effect on the crushing characteristics of the material particles; the sample space affects the accuracy of the particle strength characteristic value; the load characteristics of the K9 glass and ceramic spheres satisfy the Hertz elastic contact model. The breakage strength distributions of K9 glass and ceramic spheres with different sizes all satisfy the Weibull distribution. The characteristic stress in the model has an obvious power-law relationship with the particle size, and the Weibull distribution modulus does not have a significant dependence on the particle size. The research results have further enriched and expanded the theory and research methods of brittle material crushing. © 2022, Editorial Board of Journal of CUMT. All right reserved.

引用

页码：1086 / 1095