update on iihs side impact 2.0 test
TRANSCRIPT
iihs.org
Update on IIHS Side Impact 2.0 Test
2021 SAE Government Industry Meeting
Becky MuellerSenior Research [email protected]
Side crash fatalities in the United States
0
2,000
4,000
6,000
8,000
10,000
2000 2005 2010 2015 2020
Num
ber
of fa
talit
ies
Calendar year
50 km/h perpendicular impactBegan in 2003
Original IIHS side impact crashworthiness test
Vehicle ratings based on dummy
injury measures, restraints/dummy
kinematics and structural performance
cceptable
P
A
M
G ood
arginal
oor
Vehicle Ratings
Changes from original side impact to side impact 2.0 test
Same
Crash configuration
Dummies
Components to measure/rate
Different
Test speed
Barrier cart/trolley structure and weight
Aluminum honeycomb barrier face
Component and overall ratings
Side Impact 2.0 test conditionsIncrease MDB striking speed from 50 km/h to 60 km/h
0
25
50
75
100
0 10 20 30 40 50 60 70
Cu
mu
lati
ve w
eigh
ted
per
cen
t
Lateral delta V (km/h)
Fatal
MAIS2+
MAIS3+
Original IIHS side
crash Delta V range
IIHS side crash 2.0
Delta V range
Avera
ge 2
3 k
m/h
Avera
ge 3
5 k
m/h
Side Impact 2.0 test conditionsIncrease MDB mass from 1,500 kg to 1,900 kg
0
500
1,000
1,500
2,000
2,500
1985 1995 2005 2015
Ve
hic
le M
ass (
kg
)
Vehicle Year
Pickups
SUVs
Cars
Original IIHS barrier
IIHS barrier 2.0
Barrier honeycomb shape modified to reflect current SUVs and pickup geometry
0
400
800
1200
1600
-1000 -500 0 500
Hei
ght
fro
m g
rou
nd
(m
m)
Distance from front bumper (mm)
Original IIHS barrier
IIHS barrier 2.0
Pickups
SUVs
-200
0
200
400
600
800
-1000 -500 0 500 1000Lo
ngi
tud
inal
loca
tio
n f
rom
fro
nt
of
veh
icle
(m
m)
Lateral location from centerline of vehicle (mm)
Original IIHS barrier
SUV
Pickup
IIHS barrier 2.0
IIHS Side Impact 2.0 honeycomb barrier
Changes from original barrier to barrier 2.0
Lower overall height of deformable element
Lower mounting of barrier (decrease ground
clearance)
Larger barrier thickness to reduce bottoming of
deformable element
Wider flat front face to match vehicle structures
Reduced height of bumper beam element to match
current vehicles
Changes to honeycomb stiffness to reflect vehicle
characteristics
Converting all dimensions to “metric-friendly” values
(ie 103 mm to 100 mm)
Five vehicles tested with IIHS barrier 2.0 configurationValidated IIHS barrier 2.0 as representative of striking SUVs in a 60 km/h test
Kia Forte Honda Civic
Honda Accord
Toyota Camry VW Atlas
IIHS side impact cart properties
X Y Z
Center of Gravity
1,236 mm 0 mm 651 mm
Moment of Inertia
581 kg-m2 3,688 kg-m2 4,049 kg-m2
IIHS side impact cart
1,900 kg
Wheelbase: 2,926 mm
Overall Length: 4,505 mm
Width: 1,327 mm
Wheel size: 245/70R17
Includes suspension
Side impact cart drawing package
Solid Model of cart
Technical drawing package
Detailed parts list
Available on website: https://www.iihs.org/ratings/about-our-tests/test-protocols-and-technical-information
60 km/h perpendicular impact
IIHS side impact crashworthiness test 2.0
Vehicle ratings based on dummy
injury measures, restraints/dummy
kinematics and structural performance
cceptable
P
A
M
G ood
arginal
oor
Vehicle Ratings1,900 kg cart w/suspension
MDB 2.0 barrier face
Inaugural Test ProgramSmall SUVsAudi Q3
Hyundai Tucson
Buick Encore
Mitsubishi Eclipse Cross
Toyota RAV-4
Volvo XC40
Mazda CX-5
Nissan Rogue
Ford Escape
Subaru Forester
Honda CR-V
Chevrolet Equinox
Jeep Compass
Honda HR-V
Jeep Renegade
Testing to be completed by March 2021
8 tests conducted in 2020
Range of structural performanceSmall SUVs
Increased survival space
0
1
2
3
4
5
6
7
8
9
05101520253035
Vehic
le I
D
Distance from seat centerline to b-pillar (cm)
50
th m
ale
pe
lvis
5th
fe
ma
le p
elv
is
Range of peak dummy sensor measuresSelected sensors
0
1
2
3
4
5
6
0 0.5 1 1.5
Sensor Normalized to IARV
HIC
Maximum Torso Deflection
Average Torso Deflection
Combined Pelvic Force
Femur MomentL-M
0
1
2
3
4
5
6
0 0.5 1 1.5 2
Sensor Normalized to IARV
HIC
Maximum Torso Deflection
Average Torso Deflection
Combined Pelvic Force
Femur MomentL-M
Driver Dummy Passenger Dummy
Ind
ustr
y IA
RV
Ind
ustr
y IA
RV
Timeline/Next Steps
Test protocol and barrier specifications available on website
Q1 2021 – Completion of pilot program testing (small SUV segment)
Q2 - 2021 – Ratings protocol following pilot program
Side impact 2.0 to be included in TSP 2023
All updated documents can be found:
https://www.iihs.org/ratings/about-our-tests/test-protocols-and-technical-information
https://www.iihs.org/ratings/about-our-tests/test-protocols-and-technical-
information/crashworthiness-research-programs
More information at iihs.org and on our social channels:
iihs.org
/iihs.org
@IIHS_autosafety
@iihs_autosafety
IIHS
Becky Mueller
Senior Research Engineer