Bogie Frame Structure Evaluation for Light-Rail Transit (LRT) Train: A Static Testing

Abstract

A new bogie frame of Light-Rail Transit (LRT) is having its strength of structure verified with experimental static testing according to EN 13749 standards. Static testing of bogie frame structure of LRT is performed by using a combination of seven tensile and compression loads that comprise of operational loads (normal service) and over-loads (exceptional service). Measurement parameters of bogie frame are strain and deflection values. The strain and deflection values resulted at every step of the load test were measured and monitored to further be used as analytic data. This data is then compared to the stress data of finite element analysis to check its deviation value. Testing results show the maximum stress value is 81.48 MPa on operational load, meanwhile, for exceptional load case, maximum stress is 120.96 MPa and deflection value is 1.25 mm. The maximum stress value is still below yield strength of bogie frame material S 555J2 (y=355 MPa). According to testing data, structure of bogie frame LRT fulfill as the acceptance criteria.

Structural Strength Analysis of 57-Ton Capacity Flat Carriage Coal Transporter with 2x20 Feet Container Subjected to Operation Conditions

“…From the strain measurement results data, the maximum stress, minimum stress, mean stress, and stress amplitude were determined. The relationship between maximum stress (σmax), minimum stress (σmin), mean stress (σmean), and stress amplitude (σamp) is expressed by the following equation 13,18) .…”

“…The Indoneian regulation of the Minister for Transportation number PM 17 of 2011 states that every carriage operated must have the structural strength and durability in receiving operational loading 17) . The purpose of this study is focused on determination of the structural strength and durability of the 57-ton flat wagon prototype at operational conditions, in accordance with the specified acceptance criteria, and to use a fatigue limit diagram approach to the relationship between the mean stress and stress amplitude based on the Soderberg method 13,17,18) .…”