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  (1015)Evaluation
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Track/Train Interactions
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Track/Train Interactions
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52550
  
  

  25
Jul
2014
Technical Reports
Evaluation of Wheel/Rail Contact Mechanics: Concepts Report
Author
          Mehdi Ahmadian and Michael Craft

Subject
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** Roller Rig, Wheel-Rail Contact Mechanics, Rail Vehicle Dynamics, Contact Patch Dynamics, Wheel Forces and Moments
**Abstract:** A need exists for a new test rig design with advanced sensing technologies that will allow the railroad industry and regulatory agencies to better understand the wheel-rail...
Report Number
              DOT/FRA/ORD-14/28

  Office
              RDI-21
    18
Jul
2014
Technical Reports
Load Environment of Rail Joint Bars—Phase II Joint Bar Service Environment and Fatigue Analysis
Author
          Muhammad Akhtar, Kevin Koch, Roy Wiley, and David Davis

Subject
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** Strain levels, joint bar fatigue analysis, residual stress, joint bar strength
**Abstract:** Detailed analysis of measured bending strains shows that the foundation deflections have the most significant effect on the magnitude of strains. All other factors, such as track...
Report Number
              DOT/FRA/ORD-14/22

  Office
              RDI-21
    20
May
2013
Technical Reports
Comparison of FRA Regulations to International High-Speed Rail Standards
Author
          Matthew Witte, Nicholas Wilson, Robert Fries, and Huimin Wu

Subject
                    High-Speed Passenger Rail,
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** 49CFR Transportation, international high speed rail standards
**Abstract:** This report compares international standards with selected parts of Federal Railroad Administration (FRA) Code of Federal Regulation Title 49 CFR Transportation. The parts were...
Report Number
              DOT/FRA/ORD-13/30

  Office
              RRD
    30
Apr
2013
Technical Reports
Load Environment of Rail Joint Bars – Phase I Effects of Track Parameters on Rail Joint Stresses and Crack Growth
Author
          Muhammad N. Akhtar and David D. Davis

Subject
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** rail joint bars, insulated joints, joint failures
**Abstract:** The load environment of joint bars was assessed under a variety of loading and track conditions. Bending stresses, thermal stresses, and residual stresses were measured on...
Report Number
              DOT/FRA/ORD-13/24

  Office
              RRD
    22
Feb
2013
Technical Reports
Measurement of Vertical Track Deflection from a Moving Rail Car
Author
          Shane Farritor and Mahmood Fateh

Subject
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** Vertical track deflection, track deflection, rail deflection, track measurement system, vertical track modulus, track modulus, track stiffness, track geometry measurement
**Abstract:** The University of Nebraska has been conducting research sponsored by the Federal Railroad Administration’s Office of Research and Development to develop a system that measures...
Report Number
              DOT/FRA/ORD-13/08

  Office
              RRD

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