Perbandingan Hasil Uji Simulasi Abaqus CAE 6-14 dan Eksperimental Compression Test pada Crash Box Model Square

Abstract

The crash box is a passive safety system and part of an anti-collision system that is used to reduce the severity of accidents experienced by passengers or important parts of the vehicle due to direct impact. The impact box is a thin-walled structure designed to resist permanent deformation to absorb the energy caused by impact. The working principle of this Crash Box is to absorb high energy by bringing one segment to another segment due to the friction that occurs. Apart from that, if the impact energy is still large, it will continue to the deformation process in the crash box to form several deformation patterns, including concertina, diamond and mixed-mode or a combination of concertinadiamond (axisymmetric - diamond) patterns. The crash box used in this research is a thin-walled tube structure with a thickness of 3 mm, and a square-shaped crash box with a height of 100 mm, and a variety of one-hole, two-hole and three-hole crash box models are provided on two sides of the crash box wall. Based on the analysis carried out, the energy absorption value of the crash box with variations in holes carried out using simulations, the energy absorption results in the one hole model were 29.59707 Joules at a displacement of 2.4 mm, and experimentally the energy absorption value was obtained at 27.408 Joules at a displacement of 2. 4 mm, in the two-hole model simulation it is 27,415 joule displacement 2.5 mm, and in the experimental 29,9375 joule displacement 2.5 mm, in the three-hole model simulation it is 28,568 joule displacement 2.5 mm, and in the experimental it is 29, 2375 joules displacement 2.5 mm.