Technical Reports

Finite Element Models, Validation, and Results for Wheel Temperature and Elastic Thermal Stress Distribution

  • 01
  • Sep
  • 1993
AUTHOR: Y. H. Yang, J. E. Gordon, A. B. Perlman, O. Orringer
SUBJECT: Evaluation
KEYWORDS: Wheel Performance, Heat Transfer, Braking Conditions
ABSTRACT: This report is the third in a series of engineering studies on railroad vehicle wheel performance. Heat transfer finite element models of multiple unit (MU) power car wheels are documented and validated by comparison of calculated temperatures with measurements made during an operational test. Elastic finite element stress models are used to compare thermal stress effects in wheels having two different plate designs. As compared with the stiff straight plate, flexible "S" plate is found to reduce the calculated stress magnitude by 30% to 50% under drag braking conditions. However, the stress reduction is found to be only 10% under typical MU stop braking conditions.