Validation of the train energy and dynamics simulator (TEDS).

Details

• Corporate Creators:
  Sharma & Associates, Inc.
• Subject/TRT Terms:
  • Simulation
  • Software
  • Validation
  • Vehicle dynamics
  • Railroad trains
• Publication/ Report Number:
  DOT/FRA/ORD-15/01
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Railroad Administration. Office of Railroad Policy and Development
• Abstract:
  FRA has developed Train Energy and Dynamics Simulator (TEDS) based upon a longitudinal train dynamics and operations ; simulation model which allows users to conduct safety and risk evaluations, incident investigations, studies of train operations, ; ride quality evaluations, and evaluations of current equipment and new equipment designs. ; This document describes how TEDS modelling software predictions were validated with publicly available data in order to ; establish a sufficiently high level of confidence for users, which will enable them to conduct studies and investigations with ; TEDS. This report describes the approach to validating TEDS and the associated criteria that were adopted for this purpose, and it ; discusses validating the model at the train level as well as validating simulations of the braking systems (both pneumatic and ; electronically controlled pneumatic (ECP)) and the coupling systems (both draft gears and cushioning units). Train level ; validation was accomplished using available velocity profiles, coupler forces, brake pipe and brake cylinder pressures and ; stopping distance data from for well documented published and publicly available sources. ; After the validation process concluded, it was evident that TEDS is a high fidelity model that realistically predicts longitudinal ; train behavior under a variety of operating conditions, including acceleration, braking, steady state running, hilly terrain operation, ; and certain emergency conditions. Further, it demonstrated that TEDS’ predictions are realistic for both gross train dynamics, ; which is measured by parameters such as position, velocity, and stopping distance, as well as inter-car dynamics, which is ; measured by parameters such as coupler forces.
  More +
• Format:
  PDF
• Funding:
  DTFR53-12-D-00004 Task 08
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28982/dot_28982_DS1.pdf
• File Type:
  [PDF - 5.11 MB]
• Collection(s):
  US Transportation Collection ; Federal Railroad Administration
• Main Document Checksum:
  urn:sha256:76e545fcd486cf1ac2f52bb856ee81bd11ca8613cc0ccb2ea8e81b3d4ae6d163