Effect of Deformation Behavior under Vehicle Collision in High Energy Absorbing Poles

Abstract

This research aims to study the mechanical properties of A-type energy absorbing pole octagonal shape made from hot rolled steel grade SS400 through galvanized coating process, diameter 150 mm., thickness 2.3 mm. The test results were compared with those of round B-type energy absorbing pole, 90 mm diameter and 3.3 mm thick, and C-type energy absorbing pole octagonal, 100 mm diameter and 2.3 mm thick, the riveted connection technique at a pitch of 150 mm was used. The experimental procedure used a deformation test press, and the structural model of the pole was created using the finite element method, which was simulated from the column model, to see the details of the deformation behavior of the 3 types of energy absorbing poles. The experimental results showed that the deformation of the columns compared with the results of numerical simulation by a program. It was found that the numerical simulation was approximately 3% higher than the deformation test, which is reasonable. Larger diameters and the same thickness will have different percentages of deformation. It can be concluded that the octagonal A-type energy absorbing pole has the highest energy absorption capacity. Therefore, the A-type energy absorbing pole can be considered as a potential option for the design of high energy absorbing poles.