Lightweighting and steel technologies in the all-new
- 2018-11-12 13:12:00
- LUQIMENG Original
- 2907
? Mass reduction hierarchy
? Part sharing
? Steel technologies
? Crash examples
2016 Chevrolet Malibu
? 9th generation
? 111” wheelbase
? Sold in 18 countries around the world
? 3 assembly sites (Fairfax, China, Korea)
2017 Buick LaCrosse
? 3 rd generation
? 114” wheelbase
? Sold in US, Canada and China
? 2 assembly sites (Detroit Hamtramck & China)
All-New 1.5L Turbo
? 6-speed auto transmission
? 160 hp / 184 ft-lb of torque
2.0L Turbo
? 8-speed auto trans
? 250 hp / 258 ft-lb of torque
1.8L Hybrid
? 60 cell / 1.5 kWh Li-Ion battery
? Leverages Volt technology
? Control of architectural bandwidth
? Execution excellence
(short flanges, scallops, lightening holes, etc)
? Control of architectural bandwidth
? Efficient integration of systems
? The right performance targets
? Aggressive CAE iteration & optimization
? Efficient design fundamentals
? The right steel grades
? Execution excellence
(short flanges, scallops, lightening holes, etc)
? Control of architectural bandwidth
? Efficient integration of systems
? The right performance targets
? Aggressive CAE iteration & optimization
? Efficient design fundamentals
? The right steel grades
? Execution excellence
(short flanges, scallops, lightening holes, etc)
? Control of architectural bandwidth
? Efficient integration of systems
? The right performance targets
? Aggressive CAE iteration & optimization
? Efficient design fundamentals
? The right steel grades
? Execution excellence
(short flanges, scallops, lightening holes, etc)
? Thin skins
? Stable sections
? Bulkheads
? Local reinforcement
? Bolt-in struts
? Achieves key target for dynamic stiffness
? Low mass - very effective
? Allows lean “down-rigger” structure
54 meters of structure adhesive
? Supplements spot welds
? Improved durability at thin gauges
? Enhances stiffness
Arc welding/brazing
? Used in high value areas
? Allows single sided joining
? Allows smaller, stiffer sub-assemblies
? Control of architectural bandwidth
? Efficient integration of systems
? The right performance targets
? Aggressive CAE iteration & optimization
? Efficient design fundamentals
? The right steel grades
? Execution excellence
(short flanges, scallops, lightening holes, etc)
Co-formed dash
& constrained
layer doubler
Co-formed PHS B-pillar
and reinforcement
? PHS patch on PHS pillar
? Avoids dimensional issues
? Maximizes weld flats
? Steel-viscoelastic-steel
sandwich in key N&V area
? Net vehicle mass savings
(lower acoustic mass)
Vehicle deflection Strong back-up structure
? Bolt-on body parts
? Cradle deflector
? High part strength
? High weld strength
