TY  - EJOU
AU  - Zang, Lin 
AU  - Marsani, Muhammad Fadhil 
AU  - Long, Caiyan 
AU  - Yu, Yongping 

TI  - An Integrated Simulation Framework for Reliability Assessment of Bolted Joints in Lightweight High-Speed Train Battery Housings
T2  - Structural Durability \& Health Monitoring

PY  - 
VL  - 
IS  - 
SN  - 1930-2991

AB  - To bridge the gap between isolated structural and connection analyses in lightweight rail vehicle design, this study establishes an integrated modelling-simulation-verification framework. This integrated framework, developed via parametric FE modelling, multi-axial load simulation (per DIN EN 12663 & BS 7608), and standards-based verification, was applied to a specific housing design. Key results: (1) Under vertical ±3 g static loads, the tray experiences the maximum equivalent stress of 186.6 MPa, yielding a safety factor of 1.1 against the yield strength, which satisfies the minimum requirement (s<sub>1</sub> ≥ 1.15) of the DIN EN 12663 standard. (2) Under fatigue spectrum, critical stress amplitudes are 39.38 MPa (lifting seat) and 37.87 MPa (frame), yielding fatigue safety factors of 2.54 and 2.64 (BS 7608 Class B). For the reliability assessment of similar rail transit equipment. The demonstrated framework effectively bridges the gap between isolated structural and connection analyses, providing a systematic tool for lightweight, reliable design. The framework provides validated design data and a reusable methodology for lightweight rail equipment.
KW  - High-speed train; battery housing; finite element analysis; structural reliability; bolted connection; fatigue life; lightweight structure; dynamic load; safety factor

DO  - 10.32604/sdhm.2026.080465