The important role of stress waves in the study on dynamic constitutive behavior of materials by SHPB

WANG Li-li; WANG Yong-gang

doi:10.11883/1001-1455（2005）01-0017-09

Volume 25 Issue 1

Dec. 2014

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WANG Li-li, WANG Yong-gang. The important role of stress waves in the study on dynamic constitutive behavior of materials by SHPB[J]. Explosion And Shock Waves, 2005, 25(1): 17-25. doi: 10.11883/1001-1455（2005）01-0017-09

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The important role of stress waves in the study on dynamic constitutive behavior of materials by SHPB

doi: 10.11883/1001-1455（2005）01-0017-09

WANG Li-li^1,2,
WANG Yong-gang^1,2

1.
Mechanics and Materials Science Research Center, Ningbo University, Ningbo 315211, Zhejiang, China;
2.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2005-01-25

Abstract

Abstract

Two approaches are usually used in the studies of dynamic constitutive relation of materials. One is to determine the constitutive relation from the wave propagating signals (the so-called second class of inverse problems). The another is to de-couple the stress wave effects of structures and the strain-rate effects of materials. In both approaches, stress wave propagation plays a key role. In the present paper, some important aspects associated with this problem are discussed, particularly in relation to the SHPB technique. Both the assumption of uniform distribution of stress and strain along the specimen and the assumption of uniaxial stress are analyzed in detail.
- mechanics of explosion,
- stress wave propagation,
- SHPB,
- explosion/impact loading,
- strain-rate effect,
- dynamic constitutive relation

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