用Taylor试验分析多孔金属的密度和压缩应变

IF 1.2 4区工程技术 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Archives of Mechanics Pub Date : 2014-07-28 DOI:10.24423/AOM.1228

E. Włodarczyk, M. Sarzyński

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引用次数: 2

摘要

本文提出了一种用Taylor直接冲击试验(Taylor DIE)分析塑性变形多孔延性杆的密度和纵向工程压缩应变(LECS)的新实验方法。结果表明，在高冲击速度下(100 m/s)，随着杆的初始孔隙率的增加，LECS的最大值随初始孔隙率的增加而减小，这与静载荷作用下的情况相反。本文还给出了多孔铜的动态密度- LECS曲线。据作者所知，到目前为止，这些奇点还没有在现有文献中发表过。

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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Experimental analysis of density and compressive strain of porous metal with the use of Taylor test

The article presents a new experimental method of analysis of density and longitudinal engineering compressive strain (LECS) in porous ductile rod, plastically deformed with a Taylor direct impact experiment (Taylor DIE). Two essential singularities in the distribution of the LECS are revealed, namely: maximum of the LECS e r max occurs near the rod striking end (Fig. 2), and at high impact velocities ( U > 100 m/s) e r max decreases along with an increase of the rod initial porosity, this behaviour is inverse to that under static loading. The dynamical density – LECS curves for porous copper are also presented in the paper. According to the authors’ best knowledge, these singularities have not been published in available literature so far.

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来源期刊

Archives of Mechanics 工程技术-材料科学：表征与测试

CiteScore

1.40

自引率

12.50%

发文量

审稿时长

>12 weeks

期刊介绍： Archives of Mechanics provides a forum for original research on mechanics of solids, fluids and discrete systems, including the development of mathematical methods for solving mechanical problems. The journal encompasses all aspects of the field, with the emphasis placed on: -mechanics of materials: elasticity, plasticity, time-dependent phenomena, phase transformation, damage, fracture; physical and experimental foundations, micromechanics, thermodynamics, instabilities; -methods and problems in continuum mechanics: general theory and novel applications, thermomechanics, structural analysis, porous media, contact problems; -dynamics of material systems; -fluid flows and interactions with solids. Papers published in the Archives should contain original contributions dealing with theoretical, experimental, or numerical aspects of mechanical problems listed above. The journal publishes also current announcements and information about important scientific events of possible interest to its readers, like conferences, congresses, symposia, work-shops, courses, etc. Occasionally, special issues of the journal may be devoted to publication of all or selected papers presented at international conferences or other scientific meetings. However, all papers intended for such an issue are subjected to the usual reviewing and acceptance procedure.