Large Strain, High Strain Rate Testing of Copper

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 1980-10-01 DOI:10.1115/1.3224827

U. S. Lindholm, A. Nagy, G. R. Johnson, J. M. Hoegfeldt

引用次数: 109

Abstract

This paper describes the development of a high-speed torsional testing machine and results obtained on the strain-rate dependent strength of copper at large shear strains. Test techniques and data obtained are intended to be useful in applications such as ballistics and machining. For copper, the results indicate positive strain hardening behavior to very large strains under low rate, isothermal conditions and the transition to adiabatic thermal softening, shear instability and localization (shear banding) at high rates.

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铜的大应变、高应变率测试

本文介绍了高速扭转试验机的研制，以及大剪切应变下铜的应变率相关强度的试验结果。所获得的测试技术和数据旨在用于诸如弹道学和机械加工等应用。对于铜，结果表明，在低速率、等温条件下，对非常大的应变表现出正应变硬化行为，而在高速率下，向绝热软化、剪切不稳定和局部化(剪切带)转变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.