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Design and Structural Performance Evaluation of a Motorcycle Disc Brake Testing Device using Finite Element Method Yana, I Nyoman Bramastra; Muthoriq, Ery; Gunawan, Gunawan; Hidayat, Dwi Wahyu
Jurnal Rekayasa Mesin Vol. 17 No. 1 (2026)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v17i1.2400

Abstract

The increasing demand for reliable motorcycle braking systems requires accurate performance evaluation under controlled conditions, where a brake testing device plays an important role and its structural integrity becomes a key factor in ensuring safe and stable operation. The design and structural evaluation of a motorcycle disc brake testing device are conducted using the Finite Element Method (FEM), focusing on the main components including the frame, load actuator, and load holder under static loading conditions. The structure is constructed using ASTM A36 steel to provide adequate strength and stiffness, while mechanical components such as the electric motor, brake disc, and shaft are simplified as equivalent loads to reduce computational complexity without compromising realistic working conditions. The simulation results show that the maximum von Mises stresses on the frame, load actuator, and load holder are 42.92 MPa, 56.02 MPa, and 68.18 MPa, respectively, which are below the material yield strength of 250 MPa, with maximum displacements within acceptable limits and safety factors greater than 3, indicating that the structure is safe and reliable for operation.
Comparative Analysis of Structure and Material of Absorption Box on Rear Underrun Protection Device using Simple Additive Weighting Reyhan, Rizki Nabil; Pranoto, Ethys; Tohom, Frans; Muthoriq, Ery; Hidayat, Dwi Wahyu
Jurnal Rekayasa Mesin Vol. 17 No. 1 (2026)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v17i1.2403

Abstract

Rear-end collisions between passenger vehicles and heavy trucks frequently result in high fatality rates due to underride events, in which the smaller vehicle slides beneath the truck. This underscores the need for improved passive safety systems, particularly the Rear Underrun Protection Device (RUPD), which serves to absorb impact energy. However, many existing RUPD designs only meet minimum regulatory requirements without optimizing energy absorption performance. This study aims to analyze and compare the influence of varying material types and structural configurations of the energy absorption box on the RUPD’s energy absorption capability. The evaluation focuses on deformation, stress distribution, and absorbed energy under impact loading conditions. The methodology involves three-dimensional modeling using SolidWorks and finite element method (FEM) simulations in Ansys. Materials including ASTM A36 steel, AISI 1020 steel, and Aluminum 2024 are combined with honeycomb structural variations. Simulations are conducted in accordance with UN ECE R.58 standards. Furthermore, the Simple Additive Weighting (SAW) method is applied to determine the optimal design. The results indicate that both material selection and structural configuration significantly affect energy absorption performance, with the honeycomb structure using filler with Aluminum 2024 demonstrating superior capability. This study contributes to the development of more effective RUPD designs aimed at enhancing road safety.