EDAG Analysis of NanoSteel AHSS Sheet
Light-weighting assessment for vehicle structural components
NanoSteel commissioned EDAG Inc. to assess the light-weighting potential of the company’s three classes of AHSS in automotive body structures. In conducting this evaluation, EDAG utilized the existing NHTSA Light Weight Vehicle Body-In-White (BIW) architecture; the result of a holistic redesign of a 2011 Honda Accord that met North American performance and safety targets while optimizing for weight savings.
To assess the light-weighting impact of NanoSteel’s design, EDAG deployed the same methodology as they used in that 2012 study for NHTSA, including optimizing for crash performance and noise, vibration and harshness (NVH). Overall, the NanoSteel BIW design generated a 30% weight savings of 100 kg/220 lb over the baseline vehicle. This also represents an 10.5% improvement of 27 kg/60 lb over the NHTSA LWV’s BIW. Accordingly, these weight reduction results were accomplished without any reduction in simulated structural performance or vehicle safety compared to the baseline Honda.
NanoSteel materials are designed with a combination of high strength and formability that permit complex part designs needed for today’s automobiles while utilizing conventional manufacturing processes. The light-weighting findings from the study demonstrate how the high strength and elongation of NanoSteel’s sheet steels can provide automakers with the ability to use thinner gauges of stronger steels in a significant number of assemblies and parts to reduce weight while increasing the fuel efficiency of mass market vehicles.
This is significant because fuel economy standards have recently been strengthened by countries around the world, including the United States. To meet these regulatory requirements, automakers are seeking technologies that can help them achieve these goals without sacrificing safety or comfort. Light-weighting is a fundamental method for improving the fuel economy of a vehicle. If the body of the car can be made lighter, then many other parts of the vehicle can also be smaller, such as the engine and suspension, compounding the benefit. The National Academy of Sciences has found that a 10% reduction in vehicle mass can result in a 6-7% improvement in fuel economy.
Download PDF document of EDAG report - NanoSteel Intensive Body-in-White
BIW Mass Comparison to Baseline 2011 Honda Accord
In this study, the NanoSteel body-in-white design generated improved weight savings over the NHTSA LWV’s body-in-white and the baseline 2011 Honda Accord.
|Vehicle||Body-in-White Mass (kg)||Weight Reduction (%)|
|2011 Honda Accord||328.0||-|