A vehicle body side frame is a member that absorbs applied impact load by bending under the impact load. The vehicle body side frame includes plural ultrahigh strength portions provided at intervals along a longitudinal direction, and plural high strength portions interposed between the plural ultrahigh strength portions. A tensile strength of the ultrahigh strength portions exceeds 1400 MPa, and a tensile strength of the high strength portions is from 500 MPa to 1000 MPa. The high strength portions are formed with a sheet thickness greater than that of the ultrahigh strength portions. A front stress concentrating portion, a central stress concentrating portion, and a rear stress concentrating portion are respectively formed to a front high strength portion, a central high strength portion, and a rear high strength portion.
VEHICLE BODY SIDE FRAME
2016-12-15
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |