Specimen size and shape effect in split Hopkinson pressure bar testing

被引：56

作者：

Pankow, M. ^{[1
]}

Attard, C. ^{[1
]}

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

机构：

[1] Univ Michigan, Dept Aerosp Engn, Composite Struct Lab, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN | 2009年 / 44卷 / 08期

关键词：

split Hopkinson pressure bar; high strain rate; specimen size and shape; material characterization; THERMOMECHANICAL BEHAVIOR; PROPAGATION; DISPERSION; WAVES;

D O I：

10.1243/03093247JSA538

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The results from an experimental and computational study on the effects of specimen size and shape on split Hopkinson pressure bar (SHPB) testing are presented. The effects of the L/D ratio (length L divided by diameter D) along with specimen shape (cylindrical versus square prismatic) were investigated. Even though specimens having a circular cylindrical cross-section are traditionally used in SHPB testing, a square cross-section specimen has advantages associated with in situ imaging of the specimen side surfaces during stress wave propagation. The results presented here show a strong correlation in specimen response between the two types of specimens. Different ranges of L/D ratios are recommended for obtaining stiffness and strength data at near constant strain rates.

引用

页码：689 / 698

页数：10

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