Blast and Impact Research Department of Civil and Structural Engineering University of Sheffield, UK

Blast and Impact Engineering at Sheffield

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Blast and Impact Research Department of Civil and Structural Engineering University of Sheffield, UK

1. Blast and Impact Research Department of Civil and Structural Engineering University of Sheffield, UK

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Blast and Impact Research
Department of Civil and Structural
Engineering
University of Sheffield, UK
Department of Civil and Structural
Engineering
The University of Sheffield, UK

2. Blast and Impact Engineering at Sheffield

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Blast and Impact Engineering at Sheffield
Site is an old
WWII
munitions
store
Partially
buried
concrete
bunkers
Department of Civil and Structural
Engineering
The University of Sheffield, UK

3. Blast and Impact Engineering at Sheffield

4. Buxton Laboratory – Test Facilities

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Test Facilities
The Buxton lab has the following test facilities:
• External blast test arena (up to 3kg TNT)
(arrangements can be made for up to 15kg TNT tests on
an adjacent site)
• Internal blast test arena (up to 0.3kg TNT)
• 6m² “Blast box” for confined gas and HE explosions
• Ballistics ranges from small arms to 20mm calibre
Department of Civil and Structural
Engineering
The University of Sheffield, UK

5. Buxton Laboratory – Test Facilities

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Test Facilities
The Buxton lab has the following test facilities:
• Pneumatic load rig (up to 50T load, 5ms rise time)
• Hopkinson pressure bar (dynamic material
properties)
• Hypersonic impact test arena (EFP, Lined/Unlined
shaped charge – several 1000 m/s projectiles)
Department of Civil and Structural
Engineering
The University of Sheffield, UK

6. Buxton Laboratory – Test Facilities

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Test Facilities
Extensive range of experimental:
Flash radiography
High speed video/stereo DIC systems
>50 channels , >1MHz data acquisition systems
Pressure transducers, accelerometers, displacement
transducers etc
• On-site machining workshop
Department of Civil and Structural
Engineering
The University of Sheffield, UK

7. Buxton Laboratory – Experience

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Experience
Experimental studies of structural response to blast
and impact has been conducted at the Buxton lab for
>30 years.
Experimental work often associated with validation of
numerical modelling of blast/impact events
Extensive experience of working with DSTL and its
forebears
Department of Civil and Structural
Engineering
The University of Sheffield, UK

8. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Can work as a facility for conducting high-quality,
high-control experimental work for validation of
numerical modelling
Main current fundamental research theme –
characterisation of loading from blast events
Department of Civil and Structural
Engineering
The University of Sheffield, UK

9. Buxton Laboratory – Research

10. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Validation of simple predictive models for the effect
of blast clearing from boundaries of finite targets
Department of Civil and Structural
Engineering
The University of Sheffield, UK

11. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Characterisation of loading from shallow-buried
explosive charges
Department of Civil and Structural
Engineering
The University of Sheffield, UK

12.

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Department of Civil and Structural
Engineering
The University of Sheffield, UK

13. 14. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Previous published work shows a huge spread of
loading from nominally identical tests
Department of Civil and Structural
Engineering
The University of Sheffield, UK

15. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Previous published work shows a huge spread of
loading from nominally identical tests
Department of Civil and Structural
Engineering
The University of Sheffield, UK

16. Buxton Laboratory – Research

17. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
With very careful control over test arrangement and
geotechincal preparation, we get a high level of
repeatability
Department of Civil and Structural
Engineering
The University of Sheffield, UK

18.

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Impulse
HITS Collated Data - Impulse vs Charge Mass
Series1
Control (minepot)
Soil type 1
Charge Mass
Department of Civil and Structural
Engineering
The University of Sheffield, UK

19. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Impact behaviour of titanium micro-lattice materials
CDE funded short project in 2011
Impact behaviour experimentally studied at velocities
5-300m/s
Department of Civil and Structural
Engineering
The University of Sheffield, UK

20. Buxton Laboratory – Research

21. Buxton Laboratory – Research

University
of Sheffield
29 July 2009
Blast at
& Impact
DSTL-UoS Meeting – 5 Sept 2012
– Blast
& Impact
Research
UoSResearch at Sheffield
TTCP KTA1-47 Meeting
Buxton Laboratory – Research
Impact behaviour of titanium micro-lattice materials
CDE funded short project in 2011
Explicit beam-element
modelling capability
developed and validated
Now developing an
MDoF model to allow us
to optimise the microlattice properties for
given impact events
Department of Civil and Structural
Engineering
The University of Sheffield, UK

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