DefinePK

Abstract

This study will simulate the two segments crash box design due to frontal load direction. The parameter of two segments crash box design consists of: connection angle between segments (Θ), connection length (p), segment thickness ratio (t1/t2), segment height ratio (h1/h2) and outer diameter (do). Deformation mode of crash box and energy absorbing due to frontal load is observed. Taguchi method was used as design optimization method. Taguchi matrix L18 was selected. Based on simulation results, energy absorbing on two segments crash box is a constant rise on beginning conditions, then it enhance with high slope of the curve on middle condition. This fact is correlated with the pattern of deformation that it occurs in the first segment on the beginning data, then it continued as deformation joining between first and second segment. From the observation of energy absorption capability in the frontal load simulation, it can be concluded that the optimum design is a model design with parameters: Θ = 45°, p = 10 mm, t1 / t2 = 2 mm / 3 mm, h1/h2 = 40 mm / 60 mm and do = 75 mm.