ANALISIS PENYERAPAN ENERGI DAN SIMULASI METODE ELEMEN HINGGA DESAIN HYBRID STRUCTURE- COMPOSITE BERBAHAN ALUMINIUM ALLOY 6063– T52 DAN CARBON FIBER REINFORCED PLASTIC MENGGUNAKAN UJI FRONTAL CRUSH TEST

Abstract

This research is a form of testing the development of Crashbox with the hybridization / Hybrid method in order to increase the element of crashworthiness in four-wheeled vehicles. The analysis aims to analyze the absorption assessment of the Hybrid crashbox as research material. Aluminium Alloy 6063 – T52 tube with a square cross section, wrapped with a composite material of Carbon Fiber Reinforced Plastic type, with a total thickness of structure, and various orientation directions of composite fibers. Finite element method based software LS – DYNA, is used as a simulation and modeling tool for Hybrid crashbox The results of the research show that the AlCF34S model produces the highest energy absorption value of all the simulated models, which is 3130 J, and the specific energy absorption value is 32.37 kJ/kg. This value is obtained from AlCF34S modeling using the largest thickness variation, as well as the direction of fiber orientation. or the largest ply. This research also shows an understanding that the value of energy absorption is directly related to the Axial Force, average Axial Force, deformation and model weight. the opposite weight n absorption, so that the research conducted shows that the direction angle of the best composite fiber has the largest angle of 90° Referring to the AlCF34S model with a specific absorption value of 32.37 kJ / kg, and the lowest composite fiber direction by an angle of 0°. on the AlCF25S model with a specific energy absorption value of 24.29 kJ / kg