Automobile Side Structure Concept of Automobile Body Utilizing Ultra High-Tensile Strength Roll Formed Parts

Effect

Points

Both improved side impact performance andweight reduction are realized.(Weight reduction ▲25%)

Aim of Adopting Ultra High-Tension Roll Form Technology in Vehicle Body PartAim of Adopting Ultra High-Tension Roll Form Technology in Vehicle Body Part

New Body Structure Utilizing Ultra High-Tensile Strength Roll Form MemberNew Body Structure Utilizing Ultra High-Tensile Strength Roll Form Member

StrengthStrength

DesignDesign

B Pillar R/FB Pillar R/F

Roof CrossMemberRoof CrossMember

Locker R/FLocker R/F

Result of IIHS Side Impact CAEResult of IIHS Side Impact CAE

Body CenterBody Center

Seat CenterSeat Center

Strengthening Structure ofPress PartsStrengthening Structure ofPress Parts

Structure UtilizationRoll FormStructure UtilizationRoll Form

Floor Cross MemberFloor Cross Member

Roll Form PartsRoll Form Parts

Aspect Ratio of PartsAspect Ratio of Parts

Spring back control is easy.Spring back control is easy.

Crash worthiness is high.Crash worthiness is high.

590 MPa-grade t2.3590 MPa-grade t2.3Examples of B Pillar R/F Structureby Ultra High-Tensile Strength Roll FormExamples of B Pillar R/F Structureby Ultra High-Tensile Strength Roll Form

590 MPa-grade-t2.9590 MPa-grade-t2.9 1270 MPa-grade-t2.0Roll Form1270 MPa-grade-t2.0Roll Form

Closing cross section is possible

(variable cross section is possible for some parts).

Closing cross section is possible

(variable cross section is possible for some parts).

Press FormingPress Forming

Roll Forming Technology with

Ultra Tensile StrengthSteel Sheet

Roll Forming Technology with

Ultra Tensile StrengthSteel Sheet

Characteristics ofUltra High-Tensile Strength Roll FormCharacteristics ofUltra High-Tensile Strength Roll Form

LowLow HighHigh

Parts Function

Weight Reduction Effect

▲14.4kg/car

* Awarded by the Society of Automotive Engineers (SAE)

and the American Iron and Steel Institute (AISI).

Awarded the Sydney Melbourne Prize in 2006.