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Verkehrsunfallforschung an der TU Dresden GmbH
Simulation of Real World AccidentSimulation of Real-World AccidentScenarios of the GIDAS Database
Using CarMakerUsing CarMaker
Christian T. ErbsmehlMichael WagnerMichael Wagner
Verkehrsunfallforschung an der TU Dresden GmbH
Overview
g
VUFO (GIDAS)• VUFO (GIDAS)• Motivation• Simulation process
• Pre-Processingg• Simulation• Post-Processing (incl. real example)
• GIDAS pre-crash-matrix• Content of GIDAS PCM• Potential of PCM
31.08.2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 2
Verkehrsunfallforschung an der TU Dresden GmbH
VUFO
g
Documentation of traffic accidents
D t il d d t ti f b t 1000 id t llDetailed documentation of about 1000 accidents annually
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 3
Verkehrsunfallforschung an der TU Dresden GmbH
VUFO
g
Documentation of traffic accidents
German In-Depth Accident Study (GIDAS)German In-Depth Accident Study (GIDAS)
Federal Highway Research Institute
Research Association for Automotive Technology
Verkehrsunfallforschungan der TU Dresden GmbH
Hannover Medical Schoolan der TU Dresden GmbH School
GIDAS
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 4
GIDAS2000 accidents/year
Verkehrsunfallforschung an der TU Dresden GmbH
VUFO
g
GIDAS status as of 01 07 2012
Documentation of traffic accidentsGIDAS – status as of 01.07.2012
22.347 completely documented & reconstructed traffic accidents
40.038 hi l
55.750 29.697 i j d
40.038 t ti
traffic accidents
26.449passenger cars
vehicles
37.830 occupants
persons
76.736 injuries
injured persons
89.838 events
reconstructions
p g
2.618 trucks
p
4.589 truck/ bus/tram-occup.
j
21.665 slightly injured
34.747 vehicle-vehhicle-collisions
862 buses & trams
3.001 pedestrians
7.414severely injured
11.444 vehicle-object-collisons
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 5
9.989 (motor-)cycles
10.330 (motor-) cycle-occupants
618 fatalities
Verkehrsunfallforschung an der TU Dresden GmbH
Motivation
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Road safety Traffic accidentPrevention/reduction of
injury severity
Traffic accident
Safety of environment
Passive safety accident databasesDevelopment of driver
assistance systems
y
Active safety
??? Traffic accident simulation
Benefit for road safety
???
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 6
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process - Overview
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Pre-Processing Simulation Post-Processing
Definition of parameters
Computation of Analysis of solutions parameters each simulation step
&Storaging of results
&3D-plotting
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 7
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process – Pre-Processing
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Pre-Processing Simulation Post-Processing
Vehicle properties
GIDAS
• Height• Width• Length• Length• Weight• Type of driveType of drive• Tire dimensions• …
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 8
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process – Pre-Processing
g
Pre-Processing Simulation Post-Processing
Vehicle properties
Calculated data
• Center of gravity• Moments of inertia• Track• …
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 9
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process – Pre-Processing
g
Pre-Processing Simulation Post-Processing
Velocity profile
GIDASReconstruction data: - Collision velocity
- Deceleration- Braking distance
ty (v
)V
eloc
it
Collision
Ti (t)
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 10
Time(t)
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process – Pre-Processing
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Pre-Processing Simulation Post-Processing
Digital accident sketch
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 11
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process – Pre-Processing
g
Pre-Processing Simulation Post-Processing
Road properties
Road surfaceGIDAS
Road coatingGIDAS
Dry Asphalt
Table (Danner / Halm)
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 12
Fricitionµ=0.75
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process - Simulation
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Pre-Processing Simulation Post-Processing
Trajectory of opponent BUSopponent BUS
T= (-5…0) seconds
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 13
Verkehrsunfallforschung an der TU Dresden GmbH
Simulation process – Post-Processing
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Pre-Processing Simulation Post-Processing
Real accident
Comparison Virtual accident fi ti 1
Virtual accident fi ti 2 Co pa so configuration 1configuration 2
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 14
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
Example
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 15
Source: GIDAS
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
ExampleAccident scene with view restriction
Participant 1
P ti i t 2
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 16
Source: GIDASParticipant 2
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
Graphic results
Real accident
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 17
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
Graphic results
Virtual accident configuration 1
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 18
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
Graphic results
Virtual accident configuration 2
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 19
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
Real accident
Comparison Virtual accident fi ti 1
Virtual accident fi ti 2 Co pa so configuration 1configuration 2
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 20
Verkehrsunfallforschung an der TU Dresden GmbH
Post-Processing - Exemplary Accident
g
Pre-Processing Simulation Post-Processing
Virtual accident configuration 1
Virtual accident configuration 2configuration 1 configuration 2
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 21
Verkehrsunfallforschung an der TU Dresden GmbH
GIDAS-PCM
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GIDAS pre-crash-matrix (PCM)
Sequence of accident events
Point of no return Collision
Level of detail in GIDAS-database
Area for evaluation of active safety t
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 22
systems
Verkehrsunfallforschung an der TU Dresden GmbH
GIDAS-PCM - Content
g
Simulation results of real accident
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 23
Verkehrsunfallforschung an der TU Dresden GmbH
GIDAS-PCM - Potential
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• Detailed research of pre-crash• For single cases and pool of accidents• For single cases and pool of accidents• Acceleration• Visibility• Visibility• Velocitiy
Position• Position• View restriction
Sample applications:
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 24
Verkehrsunfallforschung an der TU Dresden GmbH
GIDAS-PCM - Potential
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TTC Position (x/y) Visibility
Scatter plot for hiddenScatter plot for
TTC=1 secOpponent of accident 1
(4/28)
hidden
visible
Opponent of accident 2
(-11/7)
31.08.2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 25
Verkehrsunfallforschung an der TU Dresden GmbH
GIDAS-PCM - Potential
g
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 26
Verkehrsunfallforschung an der TU Dresden GmbH
GIDAS-PCM - Potential
g
8/31/2012 Dipl.-Ing.(FH) M.Eng. Christian T. Erbsmehl 27
Thank you for your attention!