The present automobile production requires the definition of restrictive criteria for prediction of characteristics of technological processes for production of automotive body components made of sheet metal blanks and characteristics of safety at collision with another object. The following factors are important for survival of passengers at collision with another object: amount of space for survival of passengers and amount of overloading of human body. The article presents the methodology for specification of the effects of material properties concerning overloading of human organism. Overloading depends on the geometry of the components, on the intensity of consolidation and limit value of downsizing of automotive body components - deformation track. Proposed criteria are analyzed with use of the following sheets: made of microalloyed steel H220PD + Z1OOMB, TRIP steel RAK 40/70 + Z1OOMB0, duplex stainless steels, austenitic steel DIN 1.4301 and deep-drawing steel DX 54. For prediction of limit values for downsizing the vehicle, the forming limit curves were specified with tensile test performed on the samples with different radii of notches. Derived relations enable prediction of contribution of strengthening in dependence on the material properties. The results obtained suggest that the austenitic steel has a good ability of energy absorption and deceleration. Austenitic steels are suitable for components of the deformation members in the zone of frontal impact.
Comparison of the deformation properties of high strength steel sheets
Vergleich der Verformungseigenschaften von hochfesten Stahlblechen
Hutnicke Listy ; 66 , 4 ; 52-55
2013
4 Seiten, 5 Bilder, 1 Tabelle, 9 Quellen
Article (Journal)
English
Deformation Behavior of High Strength Steel Sheets
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