表征材料性能的优化动态拉伸冲击试验

IF 12.2 1区 工程技术 Q1 MECHANICS Applied Mechanics Reviews Pub Date : 2022-09-11 DOI:10.3390/applmech3030063
O. Pantalé, L. Ming
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引用次数: 1

摘要

提出了一种基于泰勒冲击技术的金属材料动态拉伸试验方法。泰勒冲击试验是一种众所周知的技术,用于表征金属材料在压缩中的行为,因为它允许我们达到非常高的应变率(105s−1)。在这个动态拉伸试验中,我们将弹丸以一定的初速度发射到一个特殊设计的目标中,目的是在目标的中心区域产生拉伸变形。在本文中,我们对实验室先前发表的拉伸目标的几何形状进行了修改和优化,以实现更高的塑性应变和应变率,而不会达到目标失效的临界状态。数值模拟和实验验证了新的几何结构。用这种新几何结构进行了实验测试,以显示所允许的增益。利用有限元软件Abaqus进行了数值模拟,得到了两种形式的等效塑性变形和延伸率,并与试验结果进行了比较。
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An Optimized Dynamic Tensile Impact Test for Characterizing the Behavior of Materials
This paper presents a new dynamic tensile test based on the Taylor impact technique for application on metallic materials. The Taylor impact test is a well-known technique to characterize the behavior of metallic materials in compression because it allows us to reach very high strain rates (105s−1). In this dynamic tensile test, we launch a projectile with an initial velocity into a specially designed target in order to generate tensile deformation in its central area. In this paper, the geometry of a tensile target previously published in our laboratory was modified and optimized to achieve higher plastic strains and strain rates without reaching the critical state of target failure. Numerical simulations and experimental tests validate the new geometry. Experimental tests have been performed with this new geometry to show the gains allowed. Numerical simulations by finite elements on Abaqus show the equivalent plastic deformations and elongation of the two versions of the targets and the correlation of these results with the tests.
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来源期刊
CiteScore
28.20
自引率
0.70%
发文量
13
审稿时长
>12 weeks
期刊介绍: Applied Mechanics Reviews (AMR) is an international review journal that serves as a premier venue for dissemination of material across all subdisciplines of applied mechanics and engineering science, including fluid and solid mechanics, heat transfer, dynamics and vibration, and applications.AMR provides an archival repository for state-of-the-art and retrospective survey articles and reviews of research areas and curricular developments. The journal invites commentary on research and education policy in different countries. The journal also invites original tutorial and educational material in applied mechanics targeting non-specialist audiences, including undergraduate and K-12 students.
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