Analysis of the Structural Strength of the Barelang63 Wheeled Robot Goalkeeper Frame For Ball Impact and Robot Load Using Finite Element Analysis (FEA)

Abstract

Abstract. Wheeled soccer robots need a lightweight yet durable frame to ensure structural stability and consistent performance during competitions, where repeated collisions and ball impacts are inevitable. However, few studies have examined the structural behavior of such robot frames under realistic load conditions. This study analyzes the structural strength of the Barelang63 wheeled goalkeeper robot frame using Finite Element Analysis (FEA) in SolidWorks 2022. Three aluminum alloys—5052-H34, 6061, and 7075-T6—were tested under three loading scenarios: a horizontal collision force of 80 kgf, a vertical load of 28 kgf from robot components, and a ball impact force of 9.2 kgf. The simulation results indicated that Aluminum 6061 can safely withstand all loading conditions, with a Factor of Safety (FOS) above 1.0 and exceeding 2.0 for vertical and ball impact loads. Aluminum 7075-T6 showed the best overall performance, with the highest FOS and minimal displacement, while Aluminum 5052-H34 offered a good balance of strength, lightweight design, and cost efficiency. The findings provide practical guidance for optimizing lightweight robotic frame materials to improve durability and mechanical reliability in dynamic game environments.