Change of Strength of Brittle Building Materials under High Strain and Stress Rates

被引：4

作者：

Bragov, A. M. ^{[1
]}

Lomunov, A. K. ^{[1
]}

Lamzin, D. A. ^{[1
]}

Konstantinov, A. Y. ^{[1
]}

机构：

[1] Lobachevsky Natl State Nizhny Novgorod Res Univ, Res Inst Mech, Pr Gagarina 23,Korp 6, Nizhnii Novgorod 603600, Russia

来源：

LOBACHEVSKII JOURNAL OF MATHEMATICS | 2019年 / 40卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

Kolsky method; compression; splitting; brittle material; strain rate; stress rate; dynamic increase factor; strength; CONCRETE-LIKE MATERIALS; MECHANICAL-PROPERTIES; COMPRESSIVE BEHAVIOR; KOLSKY METHOD; PART I; ENHANCEMENT; CARDIFRC(R); TESTS;

D O I：

10.1134/S1995080219030077

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Experimental results on assessing the effects of strain and stress rates on the strength of brittle building materials such as fine-grain concretes and ceramic brick are presented. Specimens of these materials were dynamically tested using the Kolsky method and its modification, the Brazilian test (or splitting test). Were obtained strain rates up to 2.5 x 10(3) s(-1) at compression and the stress rates up to 3 x 10(3) GPa/s at tension. As a result of the experiments, values of the Dynamic Increase Factor (DIF) were determined for these the materials studied. Their curves as a function of strain and stress rates were constructed. The experimental data is compared with the theoretically obtained values of DIF as a function of strain rate available in the literature for fine-grain and fiber-reinforced concretes.

引用

页码：284 / 291

页数：8

共 23 条

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