The Effect Of Material Exposure Variations On Energy Absorption Capability And pattern Of Deformation Material Of Crash Box Of Three Segments

Abstract

Abstrak Crash box is part of the supportingcomponents on vehicle safety, especially cars. The crash boxis designed to reduce the occurrence of driver’s injuries due to collisions. This study aimed to determine the capability of energy absorption and deformation patterns in the crash box using a three-segment circle cross-section. The research method was quasi-experimental with a simulation using Finite Element Method software. The crash box simulation carried out with a 200 kg impactor on a speed of 7.67 m/s. The independent variable in this study is the material exposure variation in the crash box using steel-aluminum-steel and aluminum-steel-aluminum. The dependent variables were energy absorption, force reaction and deformation patterns occurring in the crash box. Based on the simulation results, the values ofenergy absorption was 82452 J and force reaction was 1127700 N in the crash box of steel-aluminum-steel material. Meanwhile, the crash box material of aluminum-steel-aluminum has an energy absorption value of 236210 N, force reaction of 12432 J and a better and more stable on deformation pattern.

Buffer stops behavior due to rail impact loads with LISA FEA

“…In this study the researchers compared the stresses that occur in the buffer stop construction on railroads that will be impacted by a load of 1000000 N with the kinetic energy equation of around 869,000.00 Nmm where the speed of the train at the time of impact is 15 km/h, from the results of this impact load it will produce stresses and lateral deformations in the buffer stop and will notice the change in behavior that occurs when the buffer stop head is changed to a rubber material. The load used is a load of 100 tons or 1000,000 N with a web profile thickness of 8 mm and a flange of 12 mm, while for the stop buffer the thickness of the head buffer is 40 mm and the head buffer wall is 20 mm while the material used in the modeling is as following [15] [16]. As for the modeling carried out, it can be seen in Figure 1 below that it adjusts one of the fixid type block stops.…”

Collapse Behavior and Energy Absorption Characteristics of Design Multi-Cell Thin Wall Structure 3D-Printed Under Quasi Statistic Loads

“…Despite many efforts to improve vehicle safety, accidents have repeatedly occurred with devastating impacts. One known method of improving vehicle safety is by designing thin structures (Figure 1) that can be sacrificed to absorb impact energy (Crashworthiness) [4], [5].…”