Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"rail pad"”.
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Multifaceted approach for the analysis of rail pad assembly response
… freight operations and increased high-speed rail construction worldwide, advancements in concrete crosstie fastening systems are required. A mechanistic design approach based on scientific principles, derived from extensive laboratory and field investigation and combined with computational …
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Condition monitoring of train wheels using a cost-effective smart rail pad
… of train wheels utilizing an 3D printed rail pad that is embedded with widely available accelerometers and a strain gauge. This smart rail pad was used on a heavy haul railway line to monitor train wheels by identifying any wheel defects and measuring the respective wheel loads. A series …
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The mechanics of abrasion on concrete crosstie rail seats
A sustained increase in gross rail loads and cumulative freight tonnages on heavy haul railways, as well as increased interest in high and higher-speed passenger rail development, is placing an increasing demand on railway infrastructure and its components. Several failure mechanisms are limiting …
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Vertical dynamics of railway vehicle-track system
A comprehensive finite element (FE) model of railway vehicle-track system is developed to study the dynamic interaction between the vehicle and track. The vehicle is represented by a lumped parameter system. The track is modeled as a Timoshenko beam on discrete pad-tie-ballast supports. The tie is …
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Finite element analysis of railway track under vehicle dynamic impact and longitudinal loads
Impact loads caused by flat spots on railcar wheels impose a major maintenance burden on railroads and can cause severe damage to both railcar and rail track components. In addition, the increasing tractive power of locomotives leads to significant increase in the longitudinal load demand in …
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Implementation of a comprehensive methodology for structural dynamics and NVH simulation incorporating MBS, FEM and ray tracing
… mitigating noise pollution stemming from railroad vehicles is imperative. Manufacturers and operators of rolling stock exhibit a keen interest in simulation tools tailored for calculating acoustic emissions from rails and vehicles. These tools not only furnish robust assistance and …
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Track model for predicting dynamic responses of railroad bridge approaches
… analytically tackle the difficult problem of a railway track transition zone and effectively simulate the dynamic response of a bridge approach subjected to moving train loads. The scope of the research encompassed statistical field data analysis, analytical model derivation, algorithmic …