Artigo:

In recent years, vehicle manufacturers are looking for steels that promote weight reduction and improve safety performance during impact tests. A lighter vehicle needs less fuel. If the structure promotes greater energy-absorbing capacity during impact, the vehicle will be safer. All those factors are incentives for automakers to use Advanced High Strength Steels (AHSS) instead of standard steels. AHHS are characterized by having high tensile strength and good energy-absorbing capacity. In this work the following AHSS were used: CP800, DP1000, PHS. The objective was to verify if it would be possible to have weight reduction and better safety during impact, by using AHSS in some vehicle assemblies. Three virtual tests were performed comparing the baseline with a proposed model of a generic sedan vehicle: low speed crash (Allianz test); deformation of rear side impact beam (FMVSS214 standard); frontal impact (64 hm / h, 10 ° inclination, offset 40%). There were improvements in safety performance, mainly during frontal impact: 67% reduction in foot rest intrusion; 26% increase in absorbed energy of both front rail and crash box; 36% reduction in acceleration at the point below the driver