The Influence of Sheet Metal Forming on The Axial Crushing Analysis of Top–Hat Columns
Abstract: Reducing the rate of
casualty in the crash events is always on the top priority of car manufacturers
and customers. It is therefore necessary to makeaccurate predictions of car
structural behavior during the crash events. Toachieve this goal, the axial
crushing behavior of the thin-walled top hat columnneeds to be understood
thoroughly so that the crashworthiness performance ofthe column can be predicted
accurately. The effect of sheet metal forming should be considered since many
car crashworthiness components are fabricated by sheet metal forming. This
paper presents a numerical study to investigate sheetmetal forming effects such
as: thickness distribution, residual stress and plasticstrain change to the
crushing force characteristics of the top-hat columns. First,the design of the
top-hat column was generated by using deep drawing forming process simulation.
Then, the forming parameters (geometry, residual stress,plastic strain,
thickness distribution) were transferred to the non-linear finiteelement
dynamic analysis model. The axial crushing simulations for the top-hatcolumn
with forming parameters were then performed and analyzed. The results showed
that the sheet metal forming has a considerable effect on the crushbehavior and
performance of the thin-walled top-hat columns.
Author: Le Hoai Tam, Sigit P.
Santosa, Leonardo Gunawan, Annisa Jusuf
Journal Code: jptmesingg160010
