The Influence of Forming Effects on The Bending Crush Behavior of Top-Hat Thin–Walled Beams

Abstract: This paper presents a study on the effects of forming process of a top–hat thin–walled beams to its bending crush resistance under dynamic bending load. The thin–walled beam was formed using a one step deep drawing. HyperForm software simulated the forming process and mapped its effects such as thickness variations and residual plastic strains in to the crash analysis models.Then the dynamic bending crush analysis was carried out using LS–DYNA byusing the geometry and materials data obtained from the forming analysis results. For each material model, the analyses were carried out for model withand without the forming effects. The bending crush behavior of the top–hat thin–walled beams were then analyzed to compare between the simulations with and without forming effects. The results show that by incorporating the effect of forming process, the bending crush resistance of the thin–walled beams isincrease by 4.7%. The introduction of strain rates to the material model increases even further on the bending crush resistance of the thin–walled beam.
Kata kunci: bending crush; deep drawing; forming effect; top–hat
Author: Nguyen Van Nhat Vu, Sigit P. Santosa, Leonardo Gunawan, Annisa Jusuf
Journal Code: jptmesingg160005

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