Dynamic Tensile Testing of Soft Materials

被引：56

作者：

Nie, X. ^{[1
]}

Song, B. ^{[1
,2
]}

Ge, Y. ^{[2
]}

Chen, W. W. ^{[1
,2
]}

Weerasooriya, T. ^{[3
]}

机构：

[1] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA

[2] Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA

[3] USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA

来源：

EXPERIMENTAL MECHANICS | 2009年 / 49卷 / 04期

关键词：

Split Hopkinson tension bar; Impact testing; Dynamic equilibrium; Inertia effects; Soft material; HOPKINSON PRESSURE BAR; STRAIN-RATE; STRESS; BEHAVIOR; RATES; POLYMERS; INERTIA; RUBBER;

D O I：

10.1007/s11340-008-9133-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Determination of dynamic tensile response of soft materials has been a challenge because of experimental difficulties. Split Hopkinson tension bar (SHTB) is a commonly used device for the characterization of high-rate tensile behavior of engineering materials. However, when the specimen is soft, it is challenging to design the necessary grips, to measure the weak transmitted signals, and for the specimen to achieve dynamic stress equilibrium. In this work, we modified the SHTB on the loading pulse, the equilibrium-monitoring system, and the specimen geometry. The results obtained using this modified device to characterize a soft rubber indicate that the specimen deforms under dynamic stress equilibrium at a nearly constant strain rate. Axial and radial inertia effects commonly encountered in dynamic characterization of soft materials are also minimized.

引用

页码：451 / 458

页数：8

共 30 条

[1]

[Anonymous], 1949, P R SOC LOND

[2] Inertial effects of quartz force transducers embedded in a split Hopkinson pressure bar [J].