Sharma & Associates, Inc.

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Rail Vehicles
  • Analysis and design of rail vehicle components and sub-systems, including

    • Braking systems (disk, tread, truck-mounted, etc.)

    • Draft systems (Couplers, draft gears, hydraulic cushion units, etc.)

    • Loading / Unloading systems

    • Trucks, bogies, and suspension, including high speed applications

  • Fatigue analysis and evaluations related to passenger, transit, and freight car components

  • Damage Tolerance Analysis (DTA) of railcar components, including tank car stub sills

  • Crash worthiness analysis of passenger cars, transit cars, and freight cars using finite element packages such as LS-DYNA3D and ANSYS, including evaluation of cab/passenger space intrusion, energy absorption levels, etc.

  • Analysis of railcar wheels for mechanical and thermal loads, including S-660 analyses

  • Static and Dynamic finite element modeling & analysis (FEA), including impact, of passenger cars, transit cars, freight cars, and car components (FEA codes used: ANSYS, LS-DYNA3D, HyperMesh, NASTRAN, I-DEAS)

  • In service testing of rail vehicles, including ride quality evaluations, load environment monitoring, etc.

  • Safety and ride quality evaluations for rail cars, especially related to multi-level cars and end-of-car (EOC) cushioning units

  • Analysis of train dynamics using longitudinal dynamics simulators for evaluation of coupler forces, draft gear forces, car accelerations, derailment potential, etc.

  • Dynamic analysis (including Chapter XI analysis) of rail car body and rail car suspension systems, and wheel rail interaction using Vampire® and/or OMNISIM

  • Test planning, setup and support for revenue service and laboratory tests, related to passenger cars, transit cars, freight cars, and car components

  • Consulting services for static and dynamic testing, including acquisition of strain, acceleration, pressure, temperature and displacement data

  • Analysis of data from field and laboratory testing, including preparation of reports

  • Failure analysis of railcar systems and components, including structural analysis, weld analysis, and non-destructive evaluation (NDE)

  • Failure Modes, Effects & Criticality Analysis (FMECA) of passenger cars, transit cars and freight cars

  • Design of specialized transducer systems related to railcar performance measurements

Related Projects

Coupler Height Mismatch

Coupler Height Mismatch Test

Frame Tank Analysis

Frame Tank Analysis

Intermodal Analysis

Evaluation of Intermodal Trailers

Ride-Quality Evaluations

Over The Road Test

Passenger Car Safety

Passenger Rail Car Safety Testing

Pipe Anchor Vibration Test

Over The Road Test

Disclaimer: ANSYS, LS-DYNA, NASTRAN, SAP, STAAD, VAMPIRE, TOES, Inventor, I-DEAS, Matlab, SoMat, HyperMesh, FEMB, AutoCAD, TestPoint, Reliasoft, Visual Basic, Visual C++, Access, Approach, etc. are registered trademarks of their respective corporations and their mention on this website does not imply an endorsement by Sharma & Associates, Inc.