The Effect of Heat Generation in the Railroad Bearing Thermoplastic Elastomer Suspension Element on the Thermal Behavior of Railroad Bearing Assembly

The main purpose of the proposed study is to investigate the effect of heat generation in the railroad thermoplastic elastomer suspension element to develop an experimentally informed and validated finite element thermal model which can be used to attain temperature distribution maps of railroad bearing assemblies under a variety of normal and abnormal service conditions. Among other things, these maps will be useful for sensor data interpretation and identifying ideal locations for sensor placement for continuous temperature tracking of railroad bearings (e.g. IONX motes). Specifically, the main objectives of this project are: 1) to explore and quantify the heat generation in the railroad bearing elastomer suspension element with different material systems and under different loads, frequencies, and temperature scenarios; and 2) to determine the effect of this heat generation on the thermal behavior of railroad bearing assembly under different operating conditions. To that end, the contribution of the elastomer pad to the system energy balance will be modeled using data from dynamic mechanical analysis (DMA) of common materials in use for that part. DMA will provide a full characterization of the elastic deformation (energy storage) and viscous dissipation (energy dissipation) behavior of the material as a function of load, frequency, and temperature. In parallel, computer aided design (CAD) models of the railroad bearing assembly will be developed using Solidworks commercial software to be used in constructing finite element models utilizing the ALGOR commercial software. The finite element (FE) model will be used to conduct thermal finite element analyses using some of the expected operational boundary conditions and loads including the heat generation in the elastomer suspension system. The FE models will then be validated with some physical laboratory experiments. Finally, based on the simulations and experimental results, bearing assembly recommendations will be suggested to further ensure the safe operation of railroad bearings.

Language

  • English

Project

  • Status: Active
  • Funding: $71676
  • Contract Numbers:

    DTRT13-G-UTC59

  • Sponsor Organizations:

    University of Texas Rio Grande Valley

    1201 W. University Dr
    Edinburg, Texas  United States  78539

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Managing Organizations:

    University of Texas Rio Grande Valley

    1201 W. University Dr
    Edinburg, Texas  United States  78539
  • Performing Organizations:

    University of Texas Rio Grande Valley

    1201 W. University Dr
    Edinburg, Texas  United States  78539
  • Principal Investigators:

    Fuentes, Arturo

    Jones, Robert

    Tarawneh, Constantine

  • Start Date: 20150101
  • Expected Completion Date: 20170531
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers
  • USDOT Program: University Transportation Centers Program

Subject/Index Terms

Filing Info

  • Accession Number: 01601742
  • Record Type: Research project
  • Source Agency: University Transportation Center for Railway Safety
  • Contract Numbers: DTRT13-G-UTC59
  • Files: UTC, RiP
  • Created Date: Jun 8 2016 5:53PM