In order to satisfy the requirements for the weight reduction and crashworthiness at the same time, the application of high strength steel sheets is effective for automotive body. The impact energy absorbing capability of a sheet metal to be formed as parts and the shape fixability after sheet metal forming were analyzed, previous to forming, through finite element method (FEM) simulation to clarify the selection of material characteristics of a high strength steel sheet suitable for forming parts, or the selection of the shapes of parts which are suitable for the material characteristics of a high strength steel sheet. As a result, it was found that in consideration of the rapid impact deformation behavior of a steel sheet, FEM simulation could evaluate the impact energy absorbing capability of a sheet metal as parts to be formed. Further, the material characteristic, which mainly controls the shape fixability after sheet metal forming, changes from yield strength to tensile strength in proportion to the reduction of bending radius. (VDEh)
Impact energy absorbing capabilities and shape fixabilities of high strength steel sheets for automotive bodies
Schlagenergieabsorptionsvermögen und Formhaltigkeit von hochfesten Feinblechen für Automobilkarosserien
Titel japanisch
Kawasaki Steel Giho ; 32 , 1 ; 14-20
2000
7 Seiten, 16 Bilder, 1 Tabelle, 17 Quellen
Aufsatz (Zeitschrift)
Japanisch
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