2nd seron workshop 20120426 6 simulation tools for the ... · simulation tools for the assessment...
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SeRoNSeRoNCommunity Research
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(S.3)
Simulation Tools for the Assessment of
Blast and Fire Consequences
Kasper Cramon Jørgensen, NIRAS A/SKasper Cramon Jørgensen, NIRAS A/S
2nd SeRoN Workshop – Cologne, 26th April 2012
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(S.3) SeRoN methodology - Overview
START
Road Corridor Selection
Identification of potentially
critical infrastructure objects
Network level
GENERAL ROAD CORRIDOR &
INFRASTRUCTURE DATA
Ranking of infrastructures
according to network importance
DETAILED NETWORK DATA
© SeRoN Consortium 2
RELEVANT OBJECTS
FOR DETAILED
INVESTIGATIONDETAILED TECHNICAL
INFRASTRUCTURE DATA
THREATS
Initial Relevance
Assessment (InRA)
according to network importance
Risk Analysis
Measure Analysis
END
MEASURES
Object level
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SeRoNSeRoNCommunity Research
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E U R O P E A N
Research Executive Agency (REA)
Security Research Unit
(S.3) SeRoN methodology - Overview
START
Road Corridor Selection
Identification of potentially
critical infrastructure objects
Network level
GENERAL ROAD CORRIDOR &
INFRASTRUCTURE DATA
Ranking of infrastructures
according to network importance
DETAILED NETWORK DATA
© SeRoN Consortium 3
RELEVANT OBJECTS
FOR DETAILED
INVESTIGATIONDETAILED TECHNICAL
INFRASTRUCTURE DATA
THREATS
Initial Relevance
Assessment (InRA)
according to network importance
Risk Analysis
Measure Analysis
END
MEASURES
Object level
![Page 4: 2nd SeRoN Workshop 20120426 6 Simulation tools for the ... · Simulation Tools for the Assessment of ... Software SOFiSTiK ... 2nd_SeRoN_Workshop_20120426_6_Simulation tools for the](https://reader035.vdocuments.site/reader035/viewer/2022070610/5af67c7b7f8b9a9e598f6f49/html5/thumbnails/4.jpg)
SeRoNSeRoNCommunity Research
COMMISSION
E U R O P E A N
Research Executive Agency (REA)
Security Research Unit
(S.3) SeRoN methodology - Overview
START
Road Corridor Selection
Identification of potentially
critical infrastructure objects
Network level
GENERAL ROAD CORRIDOR &
INFRASTRUCTURE DATA
Ranking of infrastructures
according to network importance
DETAILED NETWORK DATA
> Attacks with explosives on bridges and in tunnels
> Attacks with fire in tunnels
© SeRoN Consortium 4
RELEVANT OBJECTS
FOR DETAILED
INVESTIGATIONDETAILED TECHNICAL
INFRASTRUCTURE DATA
THREATS
Initial Relevance
Assessment (InRA)
according to network importance
Risk Analysis
Measure Analysis
END
MEASURES
Object level
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SeRoNSeRoNCommunity Research
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(S.3) Assessment of Blast and Fire Consequences
Assessment of blast and fire consequences includes
1. Simulation of the threat itself
> Explosion
> Fire
© SeRoN Consortium 5
> Fire
2. Simulation of consequences of the threat
> Fatalities
> Structural damage
> Indirect consequence (non-availability)
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SeRoNSeRoNCommunity Research
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(S.3) Assessment of Blast and Fire Consequences
Assessment of blast and fire consequences includes
1. Simulation of the threat itself
> Explosion
> Fire
© SeRoN Consortium 6
> Fire
2. Simulation of consequences of the threat
> Fatalities
> Structural damage
> Indirect consequence (non-availability)
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Simulation of threat: explosion
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(S.3) Explosive blast evaluation tools
> Empirical calculations
> Software HEXDAM
> Numerical simulations (LS-DYNA)
© SeRoN Consortium 8
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(S.3) Explosive blast evaluation tools
> Empirical calculations
> Software HEXDAM
> Numerical simulations (LS-DYNA)
Complexity increases
Accuracy increases
© SeRoN Consortium 9
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(S.3) Empirical calculations
© SeRoN Consortium
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(S.3) HEXDAM
> High EXplosive Damage Assessment Model
> Evaluates blast pressures in complex geometries
Object A:
© SeRoN Consortium
Object A:
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(S.3) Numerical Simulation
> LS-Dyna3D
> Analysis of explosions, explosion impact and structural damage
> Haute cuisine of blast modelling
© SeRoN Consortium 12
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(S.3) Numerical Simulations
Movie on blast propagation in tunnel removed in uploaded version due to size. Contact [email protected]
© SeRoN Consortium 13
size. Contact [email protected] movie.
CAA
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Simulation of threat: fire
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Investigation scenarios
Initial eventrepresentative
substancestate
Volume of
release(Load)
[t]
TypeOf release
Cause of release
Releaserate
Majoreffects
ContinuousLeak
(100 mm)20,6 kg/s Temperature,
15
Fire Pool FireGasoline /
DieselLiquid
28 t(50 t)
Continuous(100 mm)
20,6 kg/s Temperature,CO, soot Spontaneous
Tank failure
300 kg/s
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SeRoNSeRoNCommunity Research
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(S.3)
Investigation scenarios
Initial eventrepresentative
substancestate
Volume of
release(Load)
[t]
TypeOf release
Cause of release
Releaserate
Majoreffects
ContinuousLeak
(100 mm)20,6 kg/s Temperature,
16
Fire Pool FireGasoline /
DieselLiquid
28 t(50 t)
Continuous(100 mm)
20,6 kg/s Temperature,CO, soot Spontaneous
Tank failure
300 kg/s
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Examples of modeled objects
Object C: Cut and cover tunnel Object D: NATM tunnel
1717
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Example of
smoke propagation
1818
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Simulation of consequences of the threat:
fatalities
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Determination of effects
by evacuation simulation
Behaviour and perception based model
2020
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Determination of effects
by evacuation simulation
2121
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Determination of effects
by evacuation simulation
2222
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Determination of effects
by evacuation simulation
2323
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Simulation of consequences of the threat:
structural damage
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(S.3) Structural Analysis Tools
Increasing accuracy
© SeRoN Consortium 25
Increasing complexity
Rstab
RuckZuck
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(S.3) Object A – Simulation tool
> Bridge Type: Beam (box girder) bridge ( SeRoN Type 14)
> Material: Pre-stressed concrete
> Simulation tool: Software SOFiSTiK
> Finite Element Program
> Discretization
© SeRoN Consortium 26
> Discretization
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(S.3) Object A – Modeling strategy
> Modeling of the box girder with finite shell elements
> Modeling of load scenarios (blast):
> Removal of elements from the analysis model
> Reduction of the stiffness for elements inside adistinct radius to the blast center
© SeRoN Consortium 27
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(S.3) Object A – Simulation 1
> Scenario: Explosive charge on deck
© SeRoN Consortium 28
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(S.3) Object A – Simulation 2
> Scenario: Explosive charge next to pillar
© SeRoN Consortium 29
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End of presentationThank you for your attention.
© SeRoN Consortium 30