Constitutive Modelling of the Shock Behaviour of a Highly Porous Material

reportActive / Technical Report | Accession Number: ADA476590 | Open PDF

Abstract:

The report studies the constitutive behaviour of highly porous materials. This study is driven by efforts for the development and validation of a multi-phase modelling capability in DSTO, which aims at an enhanced evaluation of blast mitigation by porous materials. A two-phase model is employed for the description of a porous material, for which experimental shock velocity data are widely available in literature. The method deriving Hugoniots from the shock velocity data is critically approached. The importance of the non-equilibrium behaviour analysis is demonstrated, and it is shown that the stress or velocity profiles need to be considered, using relevant experiments and constitutive modelling. It is argued that the apparent anomalous behaviour of the Hugoniots of a highly porous material might be caused by misinterpretation of the experimental data.

Author(s):
Resnyansky, A. D.
Author Organization(s):
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) WEAPONS SYSTEMS DIV
Descriptive Note:
Technical rept.
Supplementary Note:
The original document contains color images.
Pagination:
0044

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DSTO-TR-2026, DSTO-AR-013-957
Monitor Series:
AR-013-957, DSTO/WSD
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_1.2.7_Experimentation; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_1_Force Support; JCA_6.1.3_Switching and Routing; JCA_1.3_Human Capital Management; JCA_6.1_Information Transport; JCA_6_Net Centric
Modernization Areas:
Microelectronics
Communities of Interest:
Weapons Technologies
Descriptor(s):
*SHOCK, *BEHAVIOR, *HUGONIOT EQUATIONS, *POROUS MATERIALS, VELOCITY, ANOMALIES, EXPERIMENTAL DATA, BLAST, TWO PHASE FLOW, NONEQUILIBRIUM FLOW, VALIDATION, MODELS, PROFILES
Field(s)/Group(s):
Psychology, Polymer Chemistry, Numerical Mathematics
Keyword(s):
SHOCK PHYSICS, CONSTITUTIVE MODELLING, TWO PHASE MODEL, NON EQUILIBRIUM BEHAVIOUR
Report Date:
2007 Jul 01
Creation Date:
2008 Feb 20