Stress Analysis on an Automotive Lower Arm Steered on the Straight and Turning Roads

This study aims to analyze the stress that occurred on an automotive lower arm made from the SAE 1513 carbon steel that was driven on a straight road as well as turning roads. The strain signals throughout 60s measured on the left lower arm were used as the loads in these analyses. The analysis results showed that the maximum stress occurred at the joint of the lower arm. These dynamic analyses also showed that the three types of roads provided almost the same stress. The clockwise road gave the highest stress value, which was 278.5 kPa, followed by the counter-clockwise road (277.9 kPa) and the straight road (277.7 kPa). The highest stress obtained when the car turns was the result of the load resting on the opposite side of the turn.