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Transcript of A Winner: Car Body Design Development of the Hyundai …/media/Files/Autosteel/Great Designs in...
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w w w . a u t o s t e e l . o r g
A Winner: Car Body Design Development of the Hyundai Sonata
Carsten Höfer Hyundai Motor Europe Technical Center
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• Background • History • Customer proposition • Styling • Practicality • Performance • Efficiency
• Development process • Platform strategy • Weight optimization • Stiffness • Material • Safety
• Overview of Ulsan Plant • Manufacturing strategy • Flexible production system • Productivity • Quality
Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
Product Concept
• Background • History • Customer proposition • Styling • Practicality • Efficiency
• Development process • Weight optimization • Stiffness • Material • Safety
BiW Concept
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i40 intro.m4v
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Product Concept Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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Product Concept Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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7
2010 Sedan 2011 Sedan & Wagon
2004
1998
Product Concept Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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Product Concept BIW Concept /
Product Concept
• Best in class roominess • Class leading practicality
• Sporty and emotional • Modern interior
• Target best in TCO • Competitive pricing
• 3 USPs: rear seat reclining, auto defog, heated steering wheel
• Best in class with 113g CO2/km
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
Product Concept Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
Product Concept Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept
Product Concept
• Cargo capacity 19. 5 cu. ft. (553 liters) with the rear seats occupied • Up to 60.7 cu. ft. (1718 liters) with the rear seats folded down
Hyundai Sonata at GDIS Conference 2013
/
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Product Concept
0.32
0.29 0.30
0.29
Predecessor i40 Competition
Cd
8,013
8,878 8,840
Predecessor i40 Competition
10,082 22%
132
155 148
Predecessor i40 Competition
CO2 (g/km)
214
Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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Product Concept BIW Concept /
BIW Concept Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
SOP
SOP
-6 -4 -2
Full schedule predecessor 24M
Full schedule i40 18M
Model Fix
Design
Design Model Fix
Test
Test
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
• Achieved a 7.6% reduction in BIW weight compared to predecessor.
438kg
Design concept Final drawings
456.3kg
Competition
438kg
EVI process
Design optimization -27.3kg
Hyundai Sonata at GDIS Conference 2013
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BIW Concept
• Rearranging the part assembly allowed for a reduction of the material thickness • From single part with uniform thickness to three parts with different, optimized thickness
Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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BIW Concept
• Change of the form from linear interior to radial interior lead to a material thickness reduction • Divergence angle to improve airflow and NVH performance
Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
Spare Member (0.8 ) Spare Member (1.0 )
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BIW Concept
• Increased the torsional stiffness by 141% and the bending stiffness by 19%. • Achieved 11% more torsional and 23% more bending stiffness compared to competition
0.32
24
14.6 0.29
Predecessor i40
28.6 35.3
Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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Product Concept BIW Concept /
BIW Concept
• Continuous members from engine room to rear floor in longitudinal direction • Connections of floor, sides and roof form closed circular structures • Main joints optimized by extensions and closed profiles
Hyundai Sonata at GDIS Conference 2013
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BIW Concept
• The formation of a closed section connecting the underbody, cowl area and suspension strut improves the stiffness of the front-area • This also increases the local stiffness of the suspension strut dome resulting in improved driving performance
+87%
Hyundai Sonata at GDIS Conference 2013
Product Concept BIW Concept /
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Product Concept BIW Concept /
BIW Concept
• The vehicle rear end is reinforced by a double structure ring shape section • The ring shapes are interconnected in longitudinal direction by the rear side members, waistline profiles and roof rails
+67%
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
• The roof stiffness is increased by local extensions • Optimized energy flow through maximized overlap • Increased local stiffness through constant section profile
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
• Application of 71m of structural adhesives leads to body stiffness increase of 14%
Hyundai Sonata at GDIS Conference 2013
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Product Concept
Hyundai i40 at Euro Car Body Conference 2011 BIW Concept
6.1 3.1 3.6
28.5
35.6
23.2
MS (120 – 280 MPa)
HSS (180 – 640 MPa)
AHSS (220 – 720 MPa)
UHSS (620 – 1280 MPa)
PHS (980 -1260 MPa)
Fibre reinforced plastic
Product Concept BIW Concept /
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
EuroNCAP comments: • Driver knee airbag is standard equipment • Maximum score for side barrier impact • Bumper area scored maximum points for pedestrian protection • Speed limitation assistance is standard equipment for best selling variant
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
20%
80%
20%
4%
12%
4%
14%
36%
30%
100%
89%
11%
24%
64%
12%
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
1 2
3
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept
1.3% 13.2%
16.3%
12.3%
12.6%
21.1%
12.0%
11.2%
Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept Hyundai Sonata at GDIS Conference 2013
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Product Concept BIW Concept /
BIW Concept Hyundai Sonata at GDIS Conference 2013
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Product Concept Hyundai Sonata at GDIS Conference 2013 Hyundai Sonata at GDIS Conference 2013
Product Concept
• World Car Concept • Focused on local market customer demands • Supporting Hyundai’s philosophy of “Modern Premium” • Featuring Hyundai’s design language of “Fluidic Sculpture”
BiW Concept
• Streamlined development process of 18 months • CAE driven design for best performance and lowest cost • Highly efficient use of High Strength Steels • Excellent Light Weight Index to meet ecological demands • Safe for Occupants and Pedestrians
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w w w . a u t o s t e e l . o r g
North American Light Vehicle Metallic Material Trends
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