contents of headform test procedure
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Contents of Headform Test Procedure. Vehicle Shape Vehicle Shape Classification Vehicle Shape Determination Parameters for Computer Simulation Effective Head Mass at Impact Head Impact Speed Ratio for Bonnet Head Impact Speed Ratio for Windshield Bonnet Impact Angle for Adult & Child - PowerPoint PPT PresentationTRANSCRIPT
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Contents of Headform Test Procedure
1. Vehicle Shape
2. Vehicle Shape Classification
3. Vehicle Shape Determination
4. Parameters for Computer Simulation
5. Effective Head Mass at Impact
6. Head Impact Speed Ratio for Bonnet
7. Head Impact Speed Ratio for Windshield
8. Bonnet Impact Angle for Adult & Child
9. Windshield Impact Angle for Adult & Child
10. Relief Ratio of Boundary Line Method Comparing with Overlap Method
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Toyota Honda Mazda Nissan Suzuki Isuzu Mitsubishi Subaru PSA/CITRO FoadSedan Celica Accord Demio Sunny Alto Minica Pleo PEUGEOT 106 Cougar(+ light vehicle) Vitz Logo Familia S-wagonMarch Cultus Legnum Impreza PEUGEOT 306 Fiesta(+ sports) Crown Legend Familia Sedan Stagea WagonR+ Legacy PEUGEOT 406 Focus
Carolla Life Capera Wagon Cefiro PEUGEOT 406 COUPE KaCivic Capera SedanPresident PEUGEOT 607 MondeoNSX RX-7 CITROEN SAXO Puma
S2000 Roadstar CITROEN XSARAMillenia CITROEN XSARA PICASSO
CITROEN XANTIA Total5 7 8 5 3 2 3 9 6 48
1Box Estima Vamos Bongo Space GearTown ace
Town ace NoahHiace
Granvia Totoal5 1 1 1 8
RV RAV4J V CR-V Terrano Escudo Wizard Chariot GrandisForesterLand cruiser S-MX Jimny ElfHylux surf Odyssey Vehi CrossHarrier Bighorn Total
4 3 1 2 4 1 1 16
1. Vehicle Shape
•Two sedans (HOLDEN COMMODORE, FORD FALCON) provided from Australia, and four sedans and three SUVs provided from USA are not included in this table.
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1-1. Vehicle Shape （ Small & 1Liter Car ）
Ref. : PS152,153,155.
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1-2. Vehicle Shape (Sedan ＆ Wagon)
Ref. : PS152,153,155.
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1-3. Vehicle Shape (SUV)
Ref. : PS152,153,155.
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1-4. Vehicle Shape (Sport Type)
Ref. : PS152,153,155.
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Ref. : PS152,153,155.
1-5. Vehicle Shape (One Box)
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MPV + SUV + Truck
0.00
1000.00
2000.00
3000.00
0.00 1000.00 2000.00 3000.00
Sedan + Light Vehicle + Sport type
0.00
1000.00
2000.00
0.00 1000.00 2000.00 3000.00
1-6. Vehicle Shape Provided By US< IHRA PS153-2 >
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1-7. Vehicle Shape Provided By EU< IHRA PS153 >Sedan + Light vehicle + Sport type
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0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) MONDEO
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) KA
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) FOCUS
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) PUMA
1-8. Vehicle Shape Provided By EU
< IHRA PS153 >Sedan + Light vehicle + Sport type
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0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
Hei
ght (
mm
)
FIESTA
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
Hei
ght (
mm
)
COUGAR
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
Hei
ght (
mm
)
PEUGEOT 406 COUPEPEUGEOT 607
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
Hei
ght (
mm
)
PEUGEOT 306
1-9. Vehicle Shape Provided By EU
< IHRA PS153 >Sedan + Light vehicle + Sport type
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0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) PEUGEOT 106
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) PEUGEOT 406
CITROEN XANTIA 0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) CITOEN XSARA PICASSO
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) CITROEN SAXO
1-10. Vehicle Shape Provided By EU
< IHRA PS153 >
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
He
igh
t (m
m) CITOEN XSARA
Sedan + Light vehicle + Sport type
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1-11. Vehicle Shape Provided By Australia
0
1000
2000
3000
0 1000 2000 3000 4000 5000Length (mm)
Hei
ght
(mm
)
a. HOLDEN COMMODOREb. FORD FALCON
ab
< IHRA PS155 >Sedan + Light vehicle + Sport type
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2. Vehicle Shape Classification Sedan + Light vehicle + Sports type
Lower Middle UpperBL (mm) 127 127 127BCH (mm) 435 475.5 516LEH (mm) 565 702 839Bon. length (mm) 1200 917.5 635Bon. angle (deg.) 11 14.5 18Win. angle (deg.) 29 34.5 40Bottom depth (mm) 42 98 154Bootm hight (mm) 182 225.5 269
SUVLower Middle Upper
BL (mm) 195 195 195BCH (mm) 544 640 736LEH (mm) 832 1000 1168Bon. length (mm) 1023 933.5 844Bon. angle (deg.) 11 9.75 8.5Win. angle (deg.) 36 39.5 43Bottom depth (mm) 48 123 198Bootm hight (mm) 248 348 448
1BoxLower Middle Upper
BL (mm) 188 188 188BCH (mm) 448 576 704LEH (mm) 864 1004 1144Bon. length (mm) 361 259 157Bon. angle (deg.) 40 40 40Win. angle (deg.) 30 38 46Bottom depth (mm) 63 95 127Bootm hight (mm) 214 292.5 371
0
1000
2000
3000
0 1000 2000 3000 4000 5000
Length (mm)
Hei
gh
t (m
m)
LEH
BC
HB
CH
LEH
BL
Bon. (length, angle)
Bon. Win. (angle)
Win.
Boundary of LEH :835mm(839mm+832mm) / 2
Whole shape is different.
Keep the IHRA computer simulation results as it is.
< IHRA PS152 >
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• Order of determination
1st. Bonnet angle > 30°→ Category Z ( One Box)≒
2nd. BLE height > 835mm → Category Y ( SUV)≒
BLE height < 835mm → Category X ( ≒Sedan)
(835mm: Boundary of BLE height)
3. Vehicle Shape Determination
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○ WP1-ST1
● WP1-ST2
△ WP2-ST1
▲ WP2-ST2
□ WP3-ST1
■ WP3-ST2
4. Parameters for Computer Simulation
< IHRA PS215 >
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5. Effective Head Mass at Impact
<IHRA/PS167>• Effective head mass varies significantly according to the impact conditions such as vehicle shape, stiffness, walking stance and so on.
• Average effective head mass Head mass≒ Adult head: 4.5 kg (Ref. IHRA/PS150, ISO/N354) Child head: 3.5 kg (Ref. IHRA/PS178, SAE973317)
<IHRA/PS178, SAE973317>* 3-Year Child Head Mass = 2.7 kg
* 6-Year Child Head Mass = 3.5 kg * 5th % Adult Female Head Mass = 3.6 kg
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6. Head Impact Speed Ratio for Bonnet
< IHRA PS237 >Round number = 0.8for all vehicle shape
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7. Head Impact Speed Ratio for Windshield
< IHRA PS237 >Round number = 0.8for all vehicle shape
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8-1. Bonnet Impact Angle for Adult & Child
65° 90°
65° 60°
50°
25°
Average the values of bonnet contact
and BLE/Grille Contact
< IHRA PS237 >
Windshield Impact Angle
is used.
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8-2. Bonnet Impact Angle for Child for 1BOX
Child Head Bonnet Impact Angle = 25°
- Bonnet Contact - - BLE/Grille Contact -
Child-6YO
Average the values
< IHRA PS237 >
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9. Windshield Impact Angle for Adult & Child
Sedan SUV 1BOXAdult 40° 40° 50°Child 40° 40° 50°
40°
40°40° 50°
< IHRA PS237 >
40° 50°
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INF GR / PS / 5810. Relief Ratio of Boundary Line Method Comparing with Overlap Method
<IHRA PS209>• Overlap method and boundary line method differ not significantly• Difference to the theoretical maximum of relief ratio is less than 5%