Determining the Behavior of Door Impact Beam Tubes Under Three Point Bending Loading

Year 2021, Volume: 5 Issue: 1, 58 - 62, 31.03.2021

Oğuz Can Karahan Emre Esener

https://doi.org/10.30939/ijastech..826458

Abstract

In real crash cases, simple bending behavior is not common. In this case, using the three-point bending test to examine the bending behavior provides a closer simulation in terms of the representation of the structure under loading. It is seen in the literature that products with tube sections are generally used as door im-pact beams. On the other hand, when examining the three-point bending behavior of developed high strength steels, it is seen that the studies on tube profiles are only evaluated in terms of hydroforming. In this study, dual-phase steel tubes used as door impact beams are investigated by means of bending loading with experimental and numerical studies. For this purpose, DP500 and DP600 steel grades are used as materials. Three-point bending tests are performed for both materials then force-stroke curves, and springback values are obtained experi-mentally. In the second stage of the study, finite element analyses are performed using Hill-48 plasticity model. Force-stroke curves, the amount of springback, and the product forms are compared with the experimental results. It is seen that force-stroke curves and product forms are obtained highly compatible with the experimental results however the amount of springback values in finite element analyses are determined higher than the experimental results.

Keywords

Door impact beam, Dual phase steel, Finite element analyses, Three-point bending

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