Energy Absorption and Deformation Pattern on Two Segment Crash Box with Rubber Connection Variation
Keywords:two segment, crash box, rubber, energy absorption, deformation pattern
Crash box is known as passive safety devices used to reduce collision damage effect. This study aims to develop two-segment crash box design by utilizing rubber as intersegment holder. Al 6063-T5 is used as crash box material with Butyl Rubber connection. The design parameter is the location of the segment connections: 1/4, 1/3, and 1/2 of the total length of the crash box. Energy absorption, and deformation patterns is observed as response variables. From the simulation result, it can be obtained that crash box with 1/3 segment connection has the highest energy absorption (1.326 kJ). The results showed that crushing force efficiency (CFE) of the crash box with 1/3 segment connection was highest, followed 1/4 segment connection and 1/2 segment connection, respectively. The deformation pattern of three models is diamond mode. The deformation pattern of the crash box with 1/3 segment connection is more stable due to more symmetrical deformation pattern.