Fatigue failure analysis of platform screen doors under subway aerodynamic loads using finite element modeling

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-03-07 DOI:10.1016/j.engfailanal.2025.109502

Chengxing Yang , Yujia Huo , Kangpei Meng , Wei Zhou , Jun Yang , Zhao Nan

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引用次数: 0

Abstract

This study presents an investigation into the fatigue failure mechanisms of platform screen doors (PSDs) subjected to aerodynamic loads generated by high-speed subway trains. A comprehensive finite element model is developed, integrating with fast Fourier transform (FFT) techniques to isolate and evaluate pulsating wind frequencies that impact the structural behavior of PSDs. The extracted wind frequencies and transient vibration responses are analyzed to determine their effects on structural stability. A load-stress transmission model is introduced to convert aerodynamic load data into structural stress time histories, enabling detailed fatigue assessments. Additionally, a stress distribution model is constructed to capture variations in maximum stress under different train speeds and distances from the track centerline. The Brittle Cracking model is applied to assess potential damage to glass components, revealing that the wind load frequency remains significantly lower than the structure’s natural frequency, thereby preventing resonance-induced failure. To evaluate long-term performance, fatigue damage assessments of critical components (such as the bottom support, door frame, and bottom plate) are conducted using both Miner’s cumulative damage criterion and a nonlinear damage model based on fatigue driving force energy. The analysis demonstrates that the maximum equivalent damage values for these components are within safe limits over a 30-year design life, with values of 0.59, 0.06, and 0.27 for the linear model, and 0.65, 0.07, and 0.29 for the nonlinear model. The study concludes by proposing an optimized design for the bottom support structure, reducing structural damage by about 45%. This research provides innovative insights into improving the durability, safety, and performance of PSDs under dynamic aerodynamic loading, contributing both to theoretical advancements and practical applications in urban transit infrastructure.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.