ARDIANSAH, SHIFA DIVA (2026) ANALISIS KEKUATAN PADA REL ROBOT UJI KOLONG DENGAN FINITE ELEMENT METHOD. Diploma thesis, POLITEKNIK KESELAMATAN TRANSPORTASI JALAN.
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Abstract
Conventional under-vehicle inspection is still performed manually, posing safety and ergonomic risks to inspection personnel. An automated undercarriage inspection robot was developed as a solution, with a rail system serving as the main guide track for the robot's movement. This study aims to analyze the structural strength of the undercarriage inspection robot rail using the Finite Element Method (FEM) based on SolidWorks Simulation, across six rail length configurations (1 m, 2 m, 3 m, 4 m, 6 m, and 12 m). The rail material used is V-Slot 2080 aluminum alloy Al 6063-T5 (σY = 145 MPa), while the support and connector components use AISI 1020 cold-rolled steel, with an applied load of 59.35 N representing the 6.05 kg weight of the robot. The results show that the maximum stress, deformation, and strain occur at the loading points located at mid-span, while the points above the supports show the lowest values, consistent with simple beam behavior. The maximum von Mises stress increases from 3.737 MPa (1 m) to 60.946 MPa (12 m), all remaining below the material's yield strength, with the safety factor decreasing from 94.37 to 2.38. In the deflection analysis, the 1–4 m configurations satisfy the criterion, while the 6 m and 12 m rails exceed the allowable limit by 2.1× and 9.2×, respectively. The segmented configuration with intermediate supports proved superior in controlling deflection and stress compared to the full-span configuration. Fatigue analysis using zero-based loading (R = 0, 300 cycles) shows that the 1–6 m rails exhibit a damage of 0.000300% with total life reaching the simulation saturation limit of 100,000,000 cycles, whereas the 12 m rail shows a maximum damage of 0.047340% (158× higher) with a minimum total life of 633,710 cycles (8.09 years of operation). Based on these results, a rail configuration with a maximum span of 4 m without intermediate supports is recommended as the optimal configuration, as it provides the best balance between structural safety, safety factor, deflection compliance, and fatigue life.
| Item Type: | Thesis (Diploma) |
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| Uncontrolled Keywords: | undercarriage inspection robot rail, Finite Element Method, SolidWorks Simulation, stress, displacement, strain, safety factor, deflection, fatigue |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Teknologi Otomotif > Teknologi Otomotif |
| Depositing User: | 23031021 23031021 |
| Date Deposited: | 16 Jul 2026 06:56 |
| Last Modified: | 16 Jul 2026 06:56 |
| URI: | http://eprints.pktj.ac.id/id/eprint/4863 |
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