Structural Design and Finite Element Analysis of a 54 Ton Freight Wagon Bolster Test Rig under Vertical Center Plate Load

Authors

• Shandy Dwi Prayoga, Udayana University, Badung, Bali, IndonesiaFollow
• I Dewa Gede Ary Subagia, Udayana University, Badung, Bali, IndonesiaFollow
• I Ketut Adi Atmika, Udayana University, Badung, Bali, IndonesiaFollow
• Abdul Rohman Farid, PT. Indonesian Railway Company (INKA), IndonesiaFollow
• Yunior Lanang Satrio, PT. Indonesian Railway Company (INKA), IndonesiaFollow

Abstract

Bolster is one of the bogie's components that receives direct loading from the car body and freight movement. One of the problems that occurs in the bolster is permanent deflection during vertical and transversal static loading. Therefore, a static loading test is required to evaluate the structural strength of the bolster. During the static loading test, a rig is required to hold the bolster so that the bolster is in a fixed position. The rig owned by PT. INKA (Persero) showed a plastic deformation at the vertical center plate load (VCP 5.22P). Therefore, a modified design of the rig is required to prevent structural failure on the rig. A structural strength test of the rig according to SNI 9291:2024 using the finite element analysis (FEA) method. The test involved the load variation in vertical center plate load, with an acceptance level of SF ≥ 1.15 according to SNI 9291:2024. Based on the structural strength analysis, the modified structural design of the top holder can reduce the von mises stress. At VCP loads (1.43P, 2.85P, and 5.22P), each can decrease the von Mises stress by 22.79%, 22.70%, and 26.1%, respectively. The modified design has a stiffness level higher than the initial design and the bolster frame δ_modification ≤ δ_initial ≤ δ_{bolster 5x5 SNI 9291:2024}. The rig complies with the SNI 9291:2024 standard.

Publisher

State University of Malang (UM)

First Page

142

Last Page

162

Recommended Citation

Prayoga, S. D., Ary Subagia, I., Adi Atmika, I., Farid, A. R., & Satrio, Y. L. (2026). Structural Design and Finite Element Analysis of a 54 Ton Freight Wagon Bolster Test Rig under Vertical Center Plate Load. Journal of Mechanical Engineering Science and Technology (JMEST), 10(1), 142-162.
Available at: https://citeus.um.ac.id/jmest/vol10/iss1/11