The Effect of Corner Radius of Square Thin-Walled Structures on Crashworthiness Indicators

Jos Istiyanto (Mechanical Engineering Department, University of Indonesia)
Harry Purnama (Research Centre for Process and Manufacturing Industry Technology, National Research and Innovation Agency (BRIN))
Joko Triwardono (Research Centre for Metallurgy, National Research and Innovation Agency (BRIN))
Jekki Hendrawan (Research Centre for Process and Manufacturing Industry Technology, National Research and Innovation Agency (BRIN))

Majalah Ilmiah Pengkajian Industri
Vol. 16 No. 2 (2022): Majalah Ilmiah Pengkajain Industri

Generally, the crash box on automobile vehicles is a thin-walled structure with a square cross-section. The majority of research was carried out for a long time to find the optimum crashworthiness indicator. In this study, numerical simulations and experimental tests are used to investigate the effect of the corner radius of a square cross-section thin-walled structure on crashworthiness indicators. Quasi-static analysis with mild steel material produces the mean force (Pm) error value is less than 3% while varying the corner radius ranging from zero to 1 mm, 2 mm, and 3 mm shows energy absorption (EA) and peak force (Pmax) decreased. Keyword: Thin-walled square tube, Mild steel, Numerical simulation, Experimental test, Crashworthiness indicators.