Cost-Effective, Time-Efficient Passenger Rail System for the Eastern United States

Mathias, James A.; Kim, Dal Hyung

doi:10.1155/2019/4364162

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…The velocity assigned was 11,666 mm/s (El-sayed et al, 2018;Jaifu et al, 2018) and the wheel displacement was defined as 600 mm, which is the distance between two sleepers and it is quite enough to learn the dynamic response of the rail due to bending. Having a shorter rail enables the model to have a very fine mesh with a significant reduction in computational time/cost (Mathias and Kim, 2019;Baiges et al, 2020).…”

Section: Boundary Conditionsmentioning

confidence: 99%

Crack influence and fatigue life assessment in rail profiles: a numerical study

Urassa,

Habte,

Mohammedseid

2023

Front. Built Environ.

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Rail transportation is a pivotal mode of land transport for its efficiency in transporting passengers and freight across short or long distances; hence, the reliability and safety of rail systems are of key importance. Rolling contact fatigue (RCF), characterized by the cyclic loading of wheel-rail contacts, presents a significant challenge in the rail industry. This study presents a comprehensive numerical investigation on the influence of different crack orientations on the contact stress of the rail profile and subsequently the fatigue life. Using finite element analysis (FEA) with Abaqus and FE-safe software, the study examined different crack orientations’ impact on stress distribution and fatigue life of rail profiles. Employing the extended finite element method (XFEM), this study modeled cracks in rail profiles with different orientations: parallel, perpendicular, and oblique to the rail axis. finite element analysis was used to obtain stress distribution results, highlighting the impact of crack presence, and orientation on maximum contact stresses. Subsequently, fatigue analysis was performed using FE-safe software, wherein the FEA results were imported to estimate fatigue life and damage evolution. The study revealed that the presence of a crack significantly influences contact stress, fatigue life, and damage accumulation. The results further demonstrated that crack orientation has an impact on the severity of those effects. Oblique cracks exhibited higher impact compared to lateral and longitudinal cracks. The study provides valuable insights into rolling contact fatigue-related failures, aiding in better understanding and mitigation of such issues, thereby contributing to improved rail maintenance practices and system safety.

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Section: Boundary Conditionsmentioning

confidence: 99%

Crack influence and fatigue life assessment in rail profiles: a numerical study

Urassa,

Habte,

Mohammedseid

2023

Front. Built Environ.

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Optimizing Locations of Energy Storage Devices and Speed Profiles for Sustainable Urban Rail Transit

Allen

Chien

2023

J. Infrastruct. Syst.

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Evaluating the Success Factors of Integrating the Railway Into the Public Urban–suburban Transport

Šimunović,

Hirnig,

Abramović

2023

Transport

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The success of integrating the railway into the public urban and suburban transport depends upon a range of internal and external factors, with challenges arising in their number and complex interdependence. Furthermore, the significance and impact of some factors are uneven in cities. There is a necessity for the right mix of different factors that drive significant use of railway into the Public Transport System (PTS). The research problem is finding and defining factors needed to assess the success of railway implementation into public urban and suburban transport. An efficiency analysis of the factors that impact the level of the planned transport system use was conducted in a hierarchical or network system. The 1st step of research is to the determination of relevant factors. In this research 27 factors were determined. Based on the determining factors and their connection it is possible to design an Analytic Network Process (ANP) to evaluate the importance of factors. Factors are divided into 4 clusters: (1) user features, (2) road transport features, (3) services features, and (4) city and corridor features. Testing was carried out by group decision-making process by members of an expert panel. According to the testing, the most important factors according to their weight are: (1) frequency with 0.11651, (2) employment level with 0.10146, (3) ticket price with 0.09714, (4) reliability with 0.07256, and (5) integration of services with 0,07065. Using the weight of each factor it is possible to evaluate the success likelihood of a concrete project. In this research case study was oriented on integrating the railway into the public urban and suburban transport in the City of Rijeka in Croatia. For this purpose, the relevance of the determined weight factors was used for the concrete project of integration in the City of Rijeka that resulting in 67.17% fulfilment of the successful integration railway into the public urban and suburban transport.

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Cost-Effective, Time-Efficient Passenger Rail System for the Eastern United States

Cited by 3 publications

References 10 publications

Crack influence and fatigue life assessment in rail profiles: a numerical study

Crack influence and fatigue life assessment in rail profiles: a numerical study

Optimizing Locations of Energy Storage Devices and Speed Profiles for Sustainable Urban Rail Transit

Evaluating the Success Factors of Integrating the Railway Into the Public Urban–suburban Transport

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